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Deep space tracking in local reference frames
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Treuhaft, R. N. |
| Copyright Year | 1988 |
| Description | A self-calibrating deep space tracking technique is described which can potentially produce two nanoradian angular spacecraft determinations. The technique uses very long base interferometric observations of a spacecraft and several radio sources. The currently employed single source technique is described as a parameter estimation procedure. Then, the number of parameters and observations leads to the proposed local reference frame technique. Station clock, Earth rotation, and tropospheric parameters are estimated along with spacecraft position from the multisource observation sequence. The contributions to spacecraft angular uncertainty from system noise, tropospheric fluctuations, and uncalibrated radio source structure are evaluated. Of these experimental errors, radio source structure dominates the determination of the spacecraft position in the radio reference frame. It is shown, however, that the sensitivity of relative spacecraft position accuracies to time-invariant radio source structure effects may be on the order of 2 nanoradians. |
| File Size | 947505 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890000816 |
| Archival Resource Key | ark:/13960/t3rv5fq6n |
| Language | English |
| Publisher Date | 1988-08-15 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Radio Signals Position Location Angular Resolution Very Long Base Interferometry Troposphere Parameter Identification Radio Sources Astronomy Astrometry Earth Rotation Deep Space Network Covariance Spacecraft Tracking Space Navigation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
