Research on Passive Detection and Location by Fixed Single Observer

The fixed single station can realize the passive location of the moving target by measuring the angle, angular velocity and Doppler frequency change rate, but this method requires high angular velocity measurement accuracy. For this reason, a fixed mono-station passive detection and location method based on space-frequency domain information is proposed, which uses direction of arrival, phase difference rate-of-change, carrier frequency and Doppler frequency rate-of change to realize passive location of moving targets. The analysis and simulation show that this method avoids the high precision measurement of diagonal velocity, reduces the requirement of parameter measurement technology, and the ranging error is less affected by angle and frequency measurement error. It is greatly affected by the measurement error of phase difference rate-of-change and Doppler frequency rate-of-change.