Solid state altimeter model: Simulation description; analysis of first results (narrow band filters, weighting)
Abstract
A computerized simulation of the Poseidon altimeter is described. The altimeter is solid state with a 2 W amplifier at 13.65 GHz. The transmitted signal is pulsed and chirped at 1700 Hz repetition frequency. The simulation makes it possible to take into account all the spurious effects (modulations, mismatches) adding to the signal, particularly the distortions due to the radiofrequency parts of the altimeter. The algorithm of the simulation, based on fast Fourier transformation is described. Results for typical phase and amplitude distortions are given. Biases of several centimeters are shown.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- March 1984
- Bibcode:
- 1984STIN...8531220R
- Keywords:
-
- Computerized Simulation;
- Pulse Radar;
- Radio Altimeters;
- Satellite-Borne Instruments;
- Signal Distortion;
- Algorithms;
- Bandwidth;
- Fast Fourier Transformations;
- Microwave Transmission;
- Pulse Duration;
- Radar Transmission;
- Spacecraft Instrumentation