PULSE TRAIN SEPARATING AND DISCRIMINATING SYSTEM

摘要

PURPOSE:To eliminate the need for using multiple filters and make constitution simple by performing searching and leading out of specific pulses by using a controllable filter. CONSTITUTION:An input signal enters a branching circuit 3 by passing through an electronic tuning filter 2 from an input terminal 1. The one of the outputs branched by the circuit 3 is demodulated by a demodulating circuit 4 and is made into a pulse train corresponding to the modulating signal of a radar signal. This pulse train is amplified with a video amplifier 5, and is collated with the data having beforehand been stored in a collating circuit 8. The data of the matched pulse width and repetitive period are inputted to a decision circuit 6. The circuit 6 compares and decides the data from the circuit 8 and the video data and transmits the signal corresponding to the matched pulse width and repetitive period to filter control circuit 9 and a gate control circuit 11.