Channelized Wideband Radar Signal Detection And FPGA Implementation

In electronic countermeasures,anti-radiation destruction is an important form of combat in electronic countermeasures,and anti-radiation missiles are the most effective weapon for hard killing radars.At the same time,with the development of various radar systems,the signal bandwidth used by them is getting wider and wider.Therefore,the process of intercepting and collecting enemy radar signals by anti-radiation missiles in a harsh electromagnetic environment is the process of detecting broadband radar signals and extracting the characteristics of radar signals.The thesis introduces a signal processing system for wideband radar signal detection.The system uses a digital channelized receiver to receive the signal.First,it performs signal detection and parameter estimation on each channel to form a pulse descriptor,and then performs a series of processing such as merging,clustering and sorting on the pulse descriptor,and finally sorts useful radar signals and extract relevant parameter information.Then,according to the complexity and performance requirements of the algorithm,the selection and construction of the hardware platform are carried out to ensure the implementability of the entire algorithm.Finally,the thesis introduces the realization of key modules of the system.Using the logic resources of FPGA to build a digital channelized receiver without blind spots,and realize signal detection and parameter estimation after channelization,and then using Micro Blaze to implement pulse clustering and sorting.The correctness of the algorithm is verified by inputting the actual intermediate frequency signal,and finally a signal processing system for wideband radar signal detection is realized.