Airborne Pulsed Doppler RadarPresents the basic principles of pulse-doppler radar without resorting to a heavily mathematical treatment. High-, medium-, and low-pulse repetition frequency (PRF) modes are explained and the advantages and disadvantages of each are discussed. Also included are an explanation of the major signal-processing functions of doppler filtering, pulse compression, tracking, synthetic aperture, selection of medium PRFs, and resolving range ambiguities and a discussion of how to predict the performance of a pulse-doppler radar in the presence of noise and clutter. Annotation copyrighted by Book News, Inc., Portland, OR |
Contents
Effects of Platform Motion on Clutter by Guy V Morris | 21 |
Spectral Characteristics of a Pulsed Waveform by Guy V | 35 |
LowPRF Mode by Guy V Morris | 51 |
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airborne radar aircraft algorithm ambiguity amplitude angle error antenna aperture approximately azimuth bandwidth Barker code beam beamwidth blind zones block diagram cell centroiding CFAR Chapter clutter returns computed detection performance doppler filter doppler frequency doppler shift doppler tracking duty cycle equation estimate false alarm fluctuation function high-PRF implemented interference Kalman filter low-PRF magnitude main-lobe clutter matched filter maximum measurement modulation moving target noise noncoherent integration operation output peak phase probability of detection pulse compression pulse width pulsed doppler radar radar cross section radar system range and doppler range bins range gate range resolution range-doppler range-gated receiver reference window region samples scan shown in Figure side lobes side-lobe clutter sidebands signal processor signal-to-noise ratio spectral spectrum Swerling target detection target return techniques threshold tracker tracking loop transmit pulse typical unambiguous range velocity waveform