Basic characteristics of FM-CW radar systems
Abstract
Due to rapid technological progress in real-time signal processing, FM-CW radar systems are expected to become a more serious competitor to pulse radar systems. This paper deals with basic radar principles such as modulating waveforms and ambiguity functions characteristics. Advantages and disadvantages of FM-CW radar systems are compared to pulse radar systems. The inherent signal processing used in FM-CW radar systems allows a flexible choice of system parameters. In this context aspects like sensitivity, range and velocity resolution are discussed. It is elucidated that the use of digital processors for signal processing (frequency determination, filtering, etc.) offers the possibility to exchange dedicated hardware solutions with software implementations. Attention is paid to equipment like the antennas, diplexer, transmitter and receiver, and to isolation problems between transmitter and receiver. Results of an experimental FM-CW research radar are shown. In addition, the future prospects of FM-CW radar, with the aerial and solid-state R.F. head-end integrated, are indicated.
- Publication:
-
In AGARD Multifunction Radar for Airborne Applications 11 p (SEE N87-18721 11-32
- Pub Date:
- July 1986
- Bibcode:
- 1986mraa.agarV....L
- Keywords:
-
- Continuous Wave Radar;
- Frequency Modulation;
- Pulse Doppler Radar;
- Radar Equipment;
- Signal Processing;
- Chirp;
- Clutter;
- Comparison;
- Polarimetry;
- Radar Antennas;
- Radar Range;
- Radar Receivers;
- Radar Resolution;
- Radar Transmitters;
- Communications and Radar