Loading...
Please wait, while we are loading the content...
Similar Documents
Compensation for time-dependent star tracker thermal deformation on the aqua spacecraft
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hashmall, Joseph A. Glickman, Jonathan Natanson, Gregory Sedlak, Joseph |
| Copyright Year | 2004 |
| Description | Analysis of attitude sensor data from the Aqua mission showed small but systematic differences between batch least-squares and extended Kalman filter attitudes. These differences were also found to be correlated with star tracker residuals, gyro bias estimates, and star tracker baseplate temperatures. This paper describes the analysis that shows that these correlations are all consistent with a single cause: time-dependent thermal deformation of star tracker alignments. These varying alignments can be separated into relative and common components. The relative misalignments can be determined and compensated for. The common misalignments can only be determined in special cases. |
| File Size | 709156 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20040171520 |
| Archival Resource Key | ark:/13960/t1zd2w83f |
| Language | English |
| Publisher Date | 2004-01-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Instrumentation And Astrionics Charge Coupled Devices Attitude Inclination Time Dependence Spacecraft Instruments Deformation Space Missions Misalignment Star Trackers Field of View Gyroscopes Gyro Horizons Kalman Filters Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
