Detection and tracking method of echo signal for miss-distance measurement

A new method of echo signal detection and tracking is proposed for greatly reducing the computations of miss-distance measurement. The main idea is that miss- distance measurement in its nature only needs data containing echo signals, so that raw data are divided into frames and only frames that pass proposed detection and tracking algorithm will be further processed. Firstly, an initial scope of frequency-point is defined. And an adaptive threshold detection scheme is implemented in the frequency-point scope to confirm if the data in the frame contains the echo signals. Then, according to the detection result, the tracking of frequency-point is performed to renew the scope of frequency-point for the detection of next frame. The detection and tracking are carried out by turns until the terminate condition is met. The algorithm has a very lite computation and the simulation results show the effectiveness of the proposed method.