Research and implementation of dechirp pulse compression processing algorithm

In the processing of digital pulse compression for wideband LFM (Linear Frequency Modulation) signal, the dechirp algorithm can effectively reduce the sampling frequency and then reduce the pressure upon following signal processing and storage. By means of theoretical simulations, this paper analyses how to choose the sampling frequency for dechirp pulse compression system, and demonstrates the factors affecting dechirp performance - sampling frequency, time delay and imbalanced SNR. Besides, we implement a dechirp algorithm on FPGA platform and provide a reference of how to choose signal bandwidth, sampling frequency and the appropriate digital pulse processing method in the design of radar system.