The possibility of reduction of the step error in an FM-CW radar altimeter is analysed by the author. Complete reduction of the error is, however, impossible due to undesired signals, i.e., the beat signal caused by the coupling between transmitter and receiver antenna and the signal caused by the deficiency of cancellation of the AM signal at the balanced mixer in the receiver. The reduction of the error by phase-modulation and Doppler effect is described.
Reduction of error due to undesired signal by phase-modulation in FM-CW radar altimeter
Verminderung von durch unerwuenschten Signalen verursachten Fehlern durch Phasenmodulation in FM-CW-Radar-Hoehenmessern
1979
2 Seiten, 1 Quelle
Article (Journal)
English
Signal processing in a satellite radar altimeter
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