![]() |
|
|
|
Thread Tools | Display Modes |
|
#1
|
|||
|
|||
![]()
George Dishman suggested to me that Doppler signals sent to
a spacecraft and relayed back to earth would provide a good test of the instantaneous speed of light hypothesis. That hypothesis states that the r/c delay in light does not extrapolate beyond c but at great distances does not increase beyond a maximal value. Thus a light source, 30 time 10^8 meters away, like a source 3 times 10^8 meters away still produces an effect in a second (due to instantaneous forces that produce a cumulative effect rising above threshold after such a one second at most delay) The problem with this proposed test is that Doppler data that is inconsistent with the speed of light assumptions is partially or entirely filtered out by NASA. According to Morabito-Asmar(see Google) paper "The closed-loop NASA tracking system produces Doppler counts, Doppler "pseudoresiduals"( residual based on predicted frequencies used to tune the receivers),signal strengths(AGCs) and Doppler reference frequencies either in the form of a constant frequency or uplink ramps." All this is output on a so called ATDF tape , so frequencies that are too far from the predicted shifted frequency may be filtered out. ( I am assuming that in this process the carrier frequency is modulated so that when a resonant increase of a specific incoming frequency is produced it is not Johnson noise or whatever but the code modulated carrier from the spacecraft. I am also assuming that tuning around the predicted shift will occur so that even if the incoming frequency is not too far from the predicted frequency it can still be obtained) Craig Marquardt has further filtered some of these files to exclude the daily modulations due to the earth's spin, plus or minus.5km/sec(plus or minus10kHz he claims although I dont think this takes into account the enormous changes in the projection angle between the velocity of the earth and the line to the spacecraft) The result is another "data" file attempting to be consistent with the speed of light delay . The assumptions of the speed of light delay are so built into all of the data coming from NASA that it may be impossible to actually test the hypothesis that light is nearly instantaneous. But lets see. I am told that at 7:38 Mar 7 1988, rx=2.291710886.9109Hz. From the telnet ephemeris I find that Pioneer 10 had the following heliocentric,xyz, coordinates in AU units: 2447227.817361111, A.D. 1988-Mar-07 07:37:00.0000, 1.436437796483437E+01, 4.078001848489932E+01, 2.333352522486281E+00, 2447227.818055556, A.D. 1988-Mar-07 07:38:00.0000, 1.436438157235370E+01, 4.078003529995198E+01, 2.333352811320062E+00, 2447227.818750000, A.D. 1988-Mar-07 07:39:00.0000, 1.436438517997504E+01, 4.078005211560639E+01, 2.333353099907363E+00, and that the Sun at the same time had : 2447227.817361111, A.D. 1988-Mar-07 07:37:00.0000, 9.674871050446867E-01, -2.212064445087720E-01, 3.105791038669308E-05, 2447227.818055556, A.D. 1988-Mar-07 07:38:00.0000, 9.674901060953275E-01, -2.211948077051214E-01, 3.108019085814273E-05, 2447227.818750000, A.D. 1988-Mar-07 07:39:00.0000, 9.674931072480047E-01, -2.211831702995969E-01, 3.110222484770500E-05, and so Canberra in solar coordinates would have an x coordinate which is the negative of the sun's x coordinate here etc. From this data one gets the craft-site difference vector at 7:38 that represents the craft-site line "d" and the two time difference vectors (7:38 and 7:37 etc) divided by 60 seconds gives the speed of the site,'vs', and the speed of the craft,'vc'. The dot products of each velocity and the line "d" divided by the sum of squares of coordinates of "d" gives the projections of these velocities on the line, "d" and the difference in these projected velocities gives the craft site relative velocity v which plugged into the formula above gives the predicted Doppler. If the predicted Doppler here is close to the observed rx then the instantaneous hypothesis is indicated. The problem is to obtain from NASA the correct tx values?????? |
#2
|
|||
|
|||
![]() ralph sansbury wrote: George Dishman suggested to me that Doppler signals sent to a spacecraft and relayed back to earth would provide a good test of the instantaneous speed of light hypothesis. What folly--It's hard to understand why some folks (that appear to be interested in physics) don't take the lime to learn any physics. There are many wonderful physics books available in libraries and bookstores at various levels. http://math.ucr.edu/home/baez/physic..._booklist.html |
#3
|
|||
|
|||
![]()
"ralph sansbury" wrote in message ...
George Dishman suggested to me that Doppler signals sent to a spacecraft and relayed back to earth would provide a good test of the instantaneous speed of light hypothesis. That hypothesis states that the r/c delay in light does not extrapolate beyond c but at great distances does not increase beyond a maximal value. Thus a light source, 30 time 10^8 meters away, like a source 3 times 10^8 meters away still produces an effect in a second (due to instantaneous forces that produce a cumulative effect rising above threshold after such a one second at most delay) Both the conventional theory and Ralph's have been used to produce predictions of the receive frequency for days in March 1988. http://www.briar.demon.co.uk/Ralph/1988_pred.gif The blue lines are Ralph's while orange and magenta are conventional. There are clear differences most notably in the phase of the diurnal variation, hence my recommendation. The problem with this proposed test is that Doppler data that is inconsistent with the speed of light assumptions is partially or entirely filtered out by NASA. That is not true. The data available from the NSSDC includes _all_ results and it is up to the user to perform the filtering. According to Morabito-Asmar(see Google) paper "The closed-loop NASA tracking system produces Doppler counts, Doppler "pseudoresiduals"( residual based on predicted frequencies used to tune the receivers),signal strengths(AGCs) and Doppler reference frequencies either in the form of a constant frequency or uplink ramps." All this is output on a so called ATDF tape , Note in particular this quote says that the signal strength is obtained from the "AGC" meaning "Automatic Gain Control". Looking at http://spaceprojects.arc.nasa.gov/Sp...er/PNStat.html "DSS 63 acquired the downlink on time at -183 dbm. After peaking the signal to -178.5 dbm, they locked the telemetry at 16 bps with SNR of -0.5 db." Clearly, they first locked on to the RF signal before attempting to detect the sub-carrier and the processes are quite separate. so frequencies that are too far from the predicted shifted frequency may be filtered out. Inspection of the data shows large tails on the distribution so this is not the case. ( I am assuming that in this process the carrier frequency is modulated so that when a resonant increase of a specific incoming frequency is produced it is not Johnson noise or whatever but the code modulated carrier from the spacecraft. The microwave carrier is modulated by a 16kHz sub-carrier which is further modulated by the science data. Neither modulation plays any part in the RF acquisition however, as Ralph quoted above the RF signal level is measured from the AGC circuit. I am also assuming that tuning around the predicted shift will occur so that even if the incoming frequency is not too far from the predicted frequency it can still be obtained) The receiver searches to acquire the downlink signal rather than 'tuning'. Craig Marquardt That should be Markwardt. has further filtered some of these files to exclude the daily modulations due to the earth's spin, plus or minus.5km/sec(plus or minus10kHz he claims although I dont think this takes into account the enormous changes in the projection angle between the velocity of the earth and the line to the spacecraft) Craig does not use a rotating coordinate system, nor do I, so this change of angle is non-existent. The result is another "data" file attempting to be consistent with the speed of light delay. No, the filtering removes outliers far from the mean of their neighbours, regardless of the speed of light. The assumptions of the speed of light delay are so built into all of the data coming from NASA that it may be impossible to actually test the hypothesis that light is nearly instantaneous. The data Ralph has is independent records of a) transmit frequency with time of transmission b) receive frequency with time of reception so the speed of light doesn't come into the picture at all up to this stage. It is up to the user to determine, for any record of a reception, when the corresponding transmission ocurred and determine the transmit frequency accordingly so if Ralph doesn't want to use the speed of light, that is up to him. Ralph knows all this already, we have been discussing it for some months by email so why he is making these statements he knows to be false. But lets see. I am told that at 7:38 Mar 7 1988, rx=2.291710886.9109Hz. From the telnet ephemeris I find that Pioneer 10 had the following heliocentric,xyz, coordinates in AU units: snip and that the Sun at the same time had : snip and so Canberra in solar coordinates would have an x coordinate which is the negative of the sun's x coordinate here etc. I think you must be giving geocentric, not heliocentric, coordinates since you have no reference to the Earth or sites in the above. That gives you a rotating reference frame and may lead to other problems. I would suggest using barycentric coordinates for the sites and craft to reduce these risks. From this data one gets the craft-site difference vector at 7:38 that represents the craft-site line "d" and the two time difference vectors (7:38 and 7:37 etc) divided by 60 seconds gives the speed of the site,'vs', and the speed of the craft,'vc'. The dot products of each velocity and the line "d" divided by the sum of squares of coordinates of "d" gives the projections of these velocities on the line, "d" and the difference in these projected velocities gives the craft site relative velocity v which plugged into the formula above gives the predicted Doppler. That is roughly right though your shorthand description leaves a bit to the imagination. However, this can be done by using Horizons directly by noting that the rate of change of range is 42.51139km/s for Canberra at 07:38 on the 7th and 42.67846km/s for Madrid at 19:38 on the 6th. (The round trip time was 12 hours by conventional theory.) If the predicted Doppler here is close to the observed rx then the instantaneous hypothesis is indicated. Conversely if the actuals are closer to the conventional prediction then your theory can be falsified. However the coseness of a single reading is a poor indicator. The key part of my suggestion was that the phase of the diurnal variation directly indicates the longitude of the transmitter for any assumption about the transmit time. The problem is to obtain from NASA the correct tx values?????? Both sites transmitted at 2110883520Hz on both days so there is no problem with that part. Again this information is in the data Ralph received directly. Two further pieces of information are required. First there is a transponder ratio of 240:221 that must be included in the predictions. Secondly Ralph, you haven't stated the equation to be used for the speed-related frequency shift in your theory, equivalent to Doppler shift in conventional theory. Other readers should note this is an approximate technique, adequate for this purpose, but with several shortcomings for more accurate work. George |
#4
|
|||
|
|||
![]() ----- Original Message ----- From: "George G. Dishman" Newsgroups: sci.astro,sci.physics Sent: Monday, July 07, 2003 5:50 PM Subject: Spacecraft Doppler&Light Speed Extrapolation "ralph sansbury" wrote in message ... George Dishman suggested to me that Doppler signals sent to a spacecraft and relayed back to earth would provide a good test of the instantaneous speed of light hypothesis. That hypothesis states that the r/c delay in light does not extrapolate beyond c but at great distances does not increase beyond a maximal value. Thus a light source, 30 time 10^8 meters away, like a source 3 times 10^8 meters away still produces an effect in a second (due to instantaneous forces that produce a cumulative effect rising above threshold after such a one second at most delay) The problem with this proposed test is that Doppler data that is inconsistent with the speed of light assumptions is partially or entirely filtered out by NASA. According to Morabito-Asmar(see Google) paper "The closed-loop NASA tracking system produces Doppler counts, Doppler "pseudoresiduals"( residual based on predicted frequencies used to tune the receivers),signal strengths(AGCs) and Doppler reference frequencies either in the form of a constant frequency or uplink ramps." All this is output on a so called ATDF tape , Note in particular this quote says that the signal strength is obtained from the "AGC" meaning "Automatic Gain Control". Looking at http://spaceprojects.arc.nasa.gov/Sp...oneer/PNStat.h tml "DSS 63 acquired the downlink on time at -183 dbm. After peaking the signal to -178.5 dbm, they locked the telemetry at 16 bps with SNR of -0.5 db." This suggests that a frequency near the predicted frequency has been resonated and that an AGC circuit to reduce strong local interference has been employed so that subsequently the modulation code or signal can be removed and identified if it is really there to confirm that the tuned resonant frequency is not Johnson noise. Clearly, the filtering techniques of nasa and Marquardt are as they say they are namely used to avoid data too far from the predicted frequencies. In spite of this I have some hope that the accepted data in some cases will show that the received Doppler could have been produced a second before by the receiving station if the receiving station was also actively transmitting at the time of reception. The data you have is filtered and modified even further by Craig Marquardt as you know. ( I am assuming that in this process the carrier frequency is modulated so that when a resonant increase of a specific incoming frequency is produced it is not Johnson noise or whatever but the code modulated carrier from the spacecraft. I am also assuming that tuning around the predicted shift will occur so that even if the incoming frequency is not too far from the predicted frequency it can still be obtained) The result is another "data" file attempting to be consistent with the speed of light delay. No, the filtering removes outliers far from the mean of their neighbours, regardless of the speed of light. I disagree. Since this gets rid of neighbors that depart the most from the predicted values based on the speed of light assumptions. The assumptions of the speed of light delay are so built into all of the data coming from NASA that it may be impossible to actually test the hypothesis that light is nearly instantaneous. But lets see. I am told that at 7:38 Mar 7 1988, rx=2.291710886.9109Hz. From the telnet ephemeris I find that Pioneer 10 had the following heliocentric,xyz, coordinates in AU units: snip and that the Sun at the same time had : snip and so Canberra in solar coordinates would have an x coordinate which is the negative of the sun's x coordinate here etc. I think you must be giving geocentric, not heliocentric, coordinates since you have no reference to the Earth or sites in the above. That gives you a rotating reference frame and may lead to other problems. I would suggest using barycentric coordinates for the sites and craft to reduce these risks. The coordinates are what is available from telnet and since relativistic considerations are not necessary here have no risks .. xy-plane: plane of the Earth's orbit at the reference epoch x-axis : out along ascending node of instantaneous plane of the Earth's orbit and the Earth's mean equator at the reference epoch z-axis : perpendicular to the xy-plane in the directional (+ or -) sense of Earth's north pole at the reference epoch. From this data one gets the craft-site difference vector at 7:38 that represents the craft-site line "d" and the two time difference vectors (7:38 and 7:37 etc) divided by 60 seconds gives the speed of the site,'vs', and the speed of the craft,'vc'. The dot products of each velocity and the line "d" divided by the sum of squares of coordinates of "d" gives the projections of these velocities on the line, "d" and the difference in these projected velocities gives the craft site relative velocity v which plugged into the formula above gives the predicted Doppler. If the predicted Doppler here is close to the observed rx then the instantaneous hypothesis is indicated. Conversely if the actuals are closer to the conventional prediction then your theory can be falsified. Unfortunately because of the- acknowledged by nasa and Marquardt but not by you- filtering process guarantees that the conventional prediction is also close. So this proves nothing about the conventional prediction. It does however permit a falsification of my theory that the r/c speed of light does not extrapolate beyond r=c and that the Doppler signal could have been received within seconds or not. However the coseness of a single reading is a poor indicator. But there may be hundreds of close readings just like this perhaps which thus confirm the hypothesis. The fact that there aren't many more is because there are so many gaps in the data due to failed attempts to tune in predicted frequencies ( based on the mistaken and never tested theorythat the r/c speed of light extrapolates to distances greater than c.) The problem is to obtain from NASA the correct tx values?????? Both sites transmitted at 2110883520Hz on both days so there is no problem with that part. I take you at your word but would like to know what nasa documents say this. Two further pieces of information are required. First there is a transponder ratio of 240:221 that must be included in the predictions. Secondly Ralph, you haven't stated the equation to be used for the speed-related frequency shift in your theory, equivalent to Doppler shift in conventional theory. The Doppler shift equation is (1+v/c)f without relativitistic modifications which are unnecessary here where v here is the difference in the projections of vs an vc on the line d. (1+v/c)f is received by the spacecraft and retransmitted as (240/221)(1+v)f so that(1+ v)^2 times 24/221 times f should be received by the sending site a second or so later if the sending site was also scheduled to send at this time of reception v denotes the sum of the projected craft and earth site velocities on the instantaneous line, d. Its easy to put the data and equations in a spreadsheet and calculate the answer But I would suggest using the least filtered data. I am working on that now |
#5
|
|||
|
|||
![]() "ralph sansbury" writes: Clearly, the filtering techniques of nasa and Marquardt are as they say they are namely used to avoid data too far from the predicted frequencies. [ Note incorrect spellings of proper noun. ] Your claims are unsubstantiated. Two kinds of filtering were applied. The first kind excluded outliers from the local trend. No assumption of light travel was made. The second kind of filtering removed noisy outliers after a crude solution was already achieved without fitting. A total of 76% of records passed. On the other hand, as you are well awa In 1987, Pioneer was below the horizon (i.e. blocked by the earth) as seen by the uplink station, for 89% of the downlinks. In 1988, that fraction goes up to 92%. For the overall 1987 to 1994 timeframe, the average amount of time this occurs is 85%. The opposite situation, where Pioneer is below the horizon as seen by the downlink station at the time of uplink, occurs 83% and 91% of the time. A general conclusion is that more than four fifths of the time between 1987 and 1994, the spacecraft is blocked from seeing one station at the same time that the other station is actively up- or down-linking. Therefore, it impossible for your putative scenario (i.e. nearly instantaneous light propagation) to have happened, since radio waves don't penetrate the earth. There is only a few per cents of the time where the uplink and downlink station were in view of the Pioneer spacecraft at the same time, and yet 76% of the data were good!! EVEN WITHOUT EXCLUDING THE NOISY DATA, THE SOLUTION WAS STILL VALID (see Markwardt 2002, sec. E). Therefore, your claims are quite simply and utterly bogus. [ Dishman: ] No, the filtering removes outliers far from the mean of their neighbours, regardless of the speed of light. I disagree. Since this gets rid of neighbors that depart the most from the predicted values based on the speed of light assumptions. Erroneous assumption, as noted above. But there may be hundreds of close readings just like this perhaps which thus confirm the hypothesis. The fact that there aren't many more is because there are so many gaps in the data due to failed attempts to tune in predicted frequencies ( based on the mistaken and never tested theorythat the r/c speed of light extrapolates to distances greater than c.) Your "close readings" theory is unsubstantiated. The Pioneer 10 solution requires knowledge of earth motion, earth rotation, and variations in earth rotation on the line of sight to less than 1 *millimeter* per second. It is not possible to get a close reading just by chance. If light travel time were nearly instantaneous, the linear speed of the earth would be incorrect by hundreds of *meters* per second. The problem is to obtain from NASA the correct tx values?????? Both sites transmitted at 2110883520Hz on both days so there is no problem with that part. I take you at your word but would like to know what nasa documents say this. The transmitted frequency is not a matter of NASA documentation. It's a matter of the Doppler tracking records, stored in the ATDF files. The Doppler shift equation is (1+v/c)f without relativitistic modifications which are unnecessary here where v here is the difference in the projections of vs an vc on the line d. I performed a test which showed that the relativistic form of the Doppler shift are indeed required. The classical form leads to much higher residuals. CM |
#6
|
|||
|
|||
![]() "Craig Markwardt" wrote in message news ![]() "ralph sansbury" writes: Clearly, the filtering techniques of nasa and Markwardt are as they say they are namely used to avoid data too far from the predicted frequencies. Your claims are unsubstantiated. Two kinds of filtering were applied. The first kind excluded outliers from the local trend. No assumption of light travel was made. But these are outliers with respect to previously filtered data required by the resonance frequencies used to tune the receiver. and the intermediate frequency before further processing. That implies they are outliers from the predicted frequency. The second kind of filtering removed noisy outliers after a crude solution was already achieved without fitting. A total of 76% of records passed. On the other hand, as you are well awa In 1987, We are talking about 1980. Pioneer was below the horizon (i.e. blocked by the earth) as seen by the uplink station, for 89% of the downlinks. I am saying that what you think was the uplink station for a specific reception was not the uplink station. The true uplink station was the receiving station. If that is the case the earth would not block reception. Do you understand? |
#7
|
|||
|
|||
![]() "ralph sansbury" wrote in message ... "Craig Markwardt" wrote in message news ![]() "ralph sansbury" writes: Clearly, the filtering techniques of nasa and Markwardt are as they say they are namely used to avoid data too far from the predicted frequencies. Your claims are unsubstantiated. Two kinds of filtering were applied. The first kind excluded outliers from the local trend. No assumption of light travel was made. But these are outliers with respect to previously filtered data required by the resonance frequencies used to tune the receiver and the intermediate frequency before further processing. That implies they are outliers from the predicted frequency. The second kind of filtering removed noisy outliers after a crude solution was already achieved without fitting. A total of 76% of records passed. On the other hand, as you are well awa In 1987, We are talking about 1980. Sorry. We are not talking about 1980 but about 1987 and 1988. But the horizon blocking of the uplink sites ( Calif and Madrid?) for 89% of the assumed downlinks in Canberra does not matter. I am assuming that when receptions are scheduled for a specific craft of the many crafts out there that transmissions to the same craft also occur at the same time in the interest of efficiency. So clearly there is no horizon earth blocking problem at the time of reception!!!!!!! Pioneer was below the horizon (i.e. blocked by the earth) as seen by the uplink station, for 89% of the downlinks. I am saying that what you think was the uplink station for a specific reception was not the uplink station. The true uplink station was the receiving station. If that is the case the earth would not block reception. Do you understand? |
#8
|
|||
|
|||
![]()
"ralph sansbury" wrote in message ...
[snips] I am saying that what you think was the uplink station for a specific reception was not the uplink station. The true uplink station was the receiving station. If that is the case the earth would not block reception. Do you understand? And since the Earth *does* block reception? Socks |
#9
|
|||
|
|||
![]()
Craig Markwardt wrote in message ...
"ralph sansbury" writes: Clearly, the filtering techniques of nasa and Marquardt are as they say they are namely used to avoid data too far from the predicted frequencies. [ Note incorrect spellings of proper noun. ] Your claims are unsubstantiated. Two kinds of filtering were applied. The first kind excluded outliers from the local trend. No assumption of light travel was made. The second kind of filtering removed noisy outliers after a crude solution was already achieved without fitting. A total of 76% of records passed. On the other hand, as you are well awa In 1987, Pioneer was below the horizon (i.e. blocked by the earth) as seen by the uplink station, for 89% of the downlinks. In 1988, that fraction goes up to 92%. For the overall 1987 to 1994 timeframe, the average amount of time this occurs is 85%. The opposite situation, where Pioneer is below the horizon as seen by the downlink station at the time of uplink, occurs 83% and 91% of the time. A general conclusion is that more than four fifths of the time between 1987 and 1994, the spacecraft is blocked from seeing one station at the same time that the other station is actively up- or down-linking. Therefore, it impossible for your putative scenario (i.e. nearly instantaneous light propagation) to have happened, since radio waves don't penetrate the earth. There is only a few per cents of the time where the uplink and downlink station were in view of the Pioneer spacecraft at the same time, and yet 76% of the data were good!! EVEN WITHOUT EXCLUDING THE NOISY DATA, THE SOLUTION WAS STILL VALID (see Markwardt 2002, sec. E). Therefore, your claims are quite simply and utterly bogus. [ Dishman: ] No, the filtering removes outliers far from the mean of their neighbours, regardless of the speed of light. I disagree. Since this gets rid of neighbors that depart the most from the predicted values based on the speed of light assumptions. Erroneous assumption, as noted above. But there may be hundreds of close readings just like this perhaps which thus confirm the hypothesis. The fact that there aren't many more is because there are so many gaps in the data due to failed attempts to tune in predicted frequencies ( based on the mistaken and never tested theorythat the r/c speed of light extrapolates to distances greater than c.) Your "close readings" theory is unsubstantiated. The Pioneer 10 solution requires knowledge of earth motion, earth rotation, and variations in earth rotation on the line of sight to less than 1 *millimeter* per second. It is not possible to get a close reading just by chance. If light travel time were nearly instantaneous, the linear speed of the earth would be incorrect by hundreds of *meters* per second. The problem is to obtain from NASA the correct tx values?????? Both sites transmitted at 2110883520Hz on both days so there is no problem with that part. I take you at your word but would like to know what nasa documents say this. The transmitted frequency is not a matter of NASA documentation. It's a matter of the Doppler tracking records, stored in the ATDF files. The Doppler shift equation is (1+v/c)f without relativitistic modifications which are unnecessary here where v here is the difference in the projections of vs an vc on the line d. I performed a test which showed that the relativistic form of the Doppler shift are indeed required. The classical form leads to much higher residuals. CM It is striking that none of you make allowances for doppler data arriving from objects within the galaxy and objects arriving from a different galaxy Try and fit doppler shifts of two supernovae observed occuring simultaneously in two different galaxies and align them with reference to the orientation of the local stars (which are themselves rotating around an axis)to when these supernovae Actually occured and with present models you can't make them fit.The price of the no boundary - 'every valid point is the center' is that galactic rotation grinds to a halt and what remains is an insult to intelligence. You don't leave celestial structure and motion in the hands of kids,the material is too good for numbskull theorists,mathematicians or whatever you call them who could'nt do astronomy to save their lives.What in heaven's name are you doing supporting the ideas of a man who knew nothing of the scale of the cosmos in terms of galaxies and wrote his notions based on the motion of the "fixed stars" ?. |
#10
|
|||
|
|||
![]() "Oriel36" wrote in message om... Craig Markwardt wrote in message ... "ralph sansbury" writes: Clearly, the filtering techniques of nasa and Markwardt are as they say they are namely used to avoid data too far from the predicted frequencies. Your claims are unsubstantiated. Two kinds of filtering were applied. The first kind excluded outliers from the local trend. No assumption of light travel was made. The second kind of filtering removed noisy outliers after a crude solution was already achieved without fitting. A total of 76% of records passed. Dont you understand that if you are excluding outlier frequencies from a previously filtered set of frequencies which includes only those frequencies that were received after tuning to the predicted frequency based on the speed of light travel from the assumed transmitting site that your data is even more distorted than the raw data. On the other hand, as you are well awa In 1987, Pioneer was below the horizon (i.e. blocked by the earth) as seen by the uplink station, for 89% of the downlinks. A general conclusion is that more than four fifths of the time between 1987 and 1994, the spacecraft is blocked from seeing one station at the same time that the other station is actively up- or down-linking. Therefore, it impossible for your putative scenario (i.e. nearly instantaneous light propagation) to have happened, since radio waves don't penetrate the earth. There is only a few per cents of the time where the uplink and downlink station were in view of the Pioneer spacecraft at the same time, and yet 76% of the data were good!! EVEN WITHOUT EXCLUDING THE NOISY DATA, THE SOLUTION WAS STILL VALID (see Markwardt 2002, sec. E). Nonsense. In my scenario the receiving site which is not blocked by the earth is also the transmission site a few seconds earlier. Of course this requires that transmission was going on at the same time as reception was going on. In general for reasons of efficiency given the large number of spacecraft to communicate with, I believe this was done. Therefore, your claims are quite simply and utterly bogus. On the contrary your understanding of what I am saying is bogus. [Dishman: ] No, the filtering removes outliers far from the mean of their neighbours, regardless of the speed of light. I disagree. Since this gets rid of neighbors that depart the most from the predicted values based on the speed of light assumptions. Erroneous assumption, as noted above. No your assumption and understanding of a basic fact of radio communications is erroneous. Resonance is always involved. The LNA or parameteric amplifier used is a way of obtaining resonance at the predicted frequency. Thus frequencies not nearly equal to the predicted frequency are not even looked for. The predicted frequency is as we agree (1-v/c)^2(240/221)(tx) were tx is the frequency transmitted at a site required by the speed of light delay assumption which is sometimes but not necessarily the same as that transmitted at the receiving site at the same time as reception is going on. But there may be hundreds of close readings just like this perhaps which thus confirm the hypothesis. The fact that there aren't many more is because there are so many gaps in the data due to failed attempts to tune in predicted frequencies ( based on the mistaken and never tested theorythat the r/c speed of light extrapolates to distances greater than c.) Your "close readings" theory is unsubstantiated. Your complete misunderstanding and distortion of what I am saying is the problem. The Pioneer 10 solution requires knowledge of earth motion, earth rotation, and variations in earth rotation on the line of sight to less than 1 *millimeter* per second. It is not possible to get a close reading just by chance. If light travel time were nearly instantaneous, the linear speed of the earth would be incorrect by hundreds of *meters* per second. Exactly and that explains why there are so many gaps. The fact that there are so many gaps is because the receiving site is not transmitting or is transmitting at a different frequency than the wrongly assumed site of transmission or because the predicted frequency shift taking into account the craft and earth motions projected onto the assumed craft-site lines at the time of transmission from earth and at the assumed time of reception and transmission at the craft and at the assumed time of reception back at the earth site is too different from the actual frequency shift. When there are no gaps and you receive a frequency that is as predicted because the receiving site sent such a frequency a few seconds earlier and the orbital spin movement of the earth at this time projected on the line to the spacecraft at this time and added to the movement of the spacecraft projected onto this line gives a frequency shift. Unless this is nearly equal to that obtained when the movements of the earth and craft and the angles between these movements and the different lines implied by the speed of light delay assumption are used etc then the frequency is not tuned in. The problem is to obtain from NASA the correct tx values?????? Both sites transmitted at 2110883520Hz on both days so there is no problem with that part. I take you at your word but would like to know what nasa documents say this. The transmitted frequency is not a matter of NASA documentation. It's a matter of the Doppler tracking records, stored in the ATDF files. But what is the documentation that says this? In this case you are receiving presumably hydrogen spectra that show red or blue shifts and infer the v in (1-v/c)f where f is the laboratory observed hydrogen frequency for a specific energy transition If we can show that the instantaneous prediction here is correct for the rather restricted set of data available we would have reason to believe that the same sort of thing would apply to galaxies and distant stars Keep in mind that although the r/c delay extrapolated to planets and stars and galaxies may imply the (1-v/c)f Doppler shift that the existence of the Doppler shift does not necessarily imply an extrapolated r/c delay. This relation is not an if and only if relation. The cause of the Doppler shift in all cases is attributable to the velocity of the receding or approaching object and the delay formula may be r/c for rc and 1 second for rc. Try and fit doppler shifts of two supernovae observed occuring simultaneously in two different galaxies and align them with reference to the orientation of the local stars (which are themselves rotating around an axis)to when these supernovae Actually occured and with present models you can't make them fit.The price of the no boundary - 'every valid point is the center' is that galactic rotation grinds to a halt and what remains is an insult to intelligence. I dont understand what you are trying to say here. You seem to be saying that you can obtain doppler shifts from two different galaxies and 'local' stars at the same time involving the same earth motions but different galaxy motions and local star motions. Then what???? |
|
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Decision on the Soyuz TMA-4 spacecraft prelaunch processing | Jacques van Oene | Space Station | 0 | April 1st 04 01:12 PM |
Voyager Spacecraft Approaching Solar System's Final Frontier | Ron Baalke | Science | 0 | November 5th 03 06:56 PM |
Soyuz TMA-3 manned spacecraft launch to the ISS | Jacques van Oene | Space Station | 0 | October 21st 03 09:39 AM |
orbit question | Jan Philips | History | 7 | September 29th 03 06:16 PM |
The Final Day on Galileo | Ron Baalke | Science | 0 | September 19th 03 07:32 PM |