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Calibration results for the geos-3 altimeter
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Martin, C. F. Butler, M. L. |
| Copyright Year | 1977 |
| Description | Data from the GEOS-3 altimeter were analyzed, for both the intensive and global modes, to determine the altitude bias levels for each mode and to verify the accuracy of the time tags which have been applied to the data. The best estimates of the biases are -5.30 + or - .2 m (intensive mode) and -3.55 m + or - .4 m (global mode). These values include the approximately 1.6 m offset of the altimeter antenna focal point from the GEOS-3 spacecraft center-of-mass. The negative signs indicate that the measured altitudes are too short. The data is corrected by subtracting the above bias numbers for the respective modes. Timing corrections which should be applied to the altimeter data were calculated theoretically, and subsequently confirmed through crossover analysis for passes 6-8 revolutions apart. The time tag correction that should be applied consists of -20.8 msec + 1 interpulse period (10.240512 msec). |
| File Size | 10906592 |
| Page Count | 126 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770026317 |
| Archival Resource Key | ark:/13960/t1qg3h94q |
| Language | English |
| Publisher Date | 1977-09-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Instrumentation Satellite Instruments Calibrating Noise Intensity Satellite Tracking Instrument Errors Altimeters Data Smoothing Geoids Geos 3 Satellite 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 |
