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Real-time orbit estimation for ats-6 from redundant attitude sensors
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Englar Jr., T. S. |
| Copyright Year | 1975 |
| Description | A program installed in the ATSOCC on-line computer operates with attitude sensor data to produce a smoothed real-time orbit estimate. This estimate is obtained from a Kalman filter which enables the estimate to be maintained in the absence of T/M data. The results are described of analytical and numerical investigations into the sensitivity of Control Center output to the position errors resulting from the real-time estimation. The results of the numerical investigation, which used several segments of ATS-6 data gathered during the Sensor Data Acquisition run on August 19, 1974, show that the implemented system can achieve absolute position determination with an error of about 100 km, implying pointing errors of less than 0.2 deg in latitude and longitude. This compares very favorably with ATS-6 specifications of approximately 0.5 deg in latitude-longitude. |
| File Size | 1299205 |
| Page Count | 63 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760006044 |
| Archival Resource Key | ark:/13960/t0tr0pj5p |
| Language | English |
| Publisher Date | 1975-04-01 |
| Access Restriction | Open |
| Subject Keyword | Astrodynamics Error Analysis Satellite Attitude Control Orbit Calculation Kalman Filters Attitude Indicators Ats 6 Computer Programs Real Time Operation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
