The application of digital filters for moving target indication

A digital system is proposed which detects moving targets and suppresses the reflections of stationary targets in a pulse radar. The system uses the quantized coherent video for the spectral discrimination of Doppler shifted signals. The main part is a recursive-type digital filter. Quadrature channels are used in order to improve the detectability of signals. The part which follows it is an integrator and a threshold for automatic detection. After some considerations concerning the realization, some results of a simulation of the system are discussed.