Experimental Estimation of the Projection Method of the Doppler Filtering of Radar Signals when Detecting Air Objects with Low Radial Velocities

We present experimental results of using the projection method of the Doppler filtering of radar signals to detect low-speed air targets against the background of intense reflections from local objects. The possibility is shown of synthesizing filters with different widths of the frequency-response stopband, which ensure detection of low-speed targets against the background of reflections from local objects in a given range of radial velocities. The dependence of the transmission coefficients of a useful signal on its Doppler frequency is analyzed for various values of both the number of pulses in a burst of received signals reflected from the target and the Doppler-filter parameters (the number of zeros of the frequency-response stopband).