Progress in the state of the art of electronic countermeasures has revived interest in CW or high duty cycle radars during the past few years. The paper discusses the design and techniques of a pseudonoise (p-n) coded radar. The basic approach is applicable to the design of modern CW or high duty cycle radars. Isolation requirements between transmitted and received signals for CW radar applications necessitates the use of two antennas. Other requirements set the radar operating frequency in the 6-18 GHz region, so that a 10-GHz radar is chosen. A pseudorandom phase code is selected for the range resolution. Factors influencing the code length are discussed: range ambiguity, Doppler ambiguity, and clutter rejection. A p-n coded waveform for radar applications appears to be within the state of the art for a sophisticated multifunction radar.
NTC '78; National Telecommunications Conference, Volume 2
- Pub Date:
- Continuous Wave Radar;
- Electronic Countermeasures;
- Signal Encoding;
- Analog To Digital Converters;
- Communications and Radar