GPU (graphics processing unit)-based radar signal intra-pulse characteristic real-time analysis realizing scheme

Abstract

The invention provides a GPU (graphics processing unit)-based radar signal intra-pulse characteristic real-time analysis realizing scheme which mainly comprises a data acquisition module, a GPU signal analysis module and a CPU (central processing unit) signal analysis module, wherein the data acquisition module is used for receiving digital bit stream from a digitalizer, and dividing the data into a plurality of short-time sequences to be subsequently processed; the GPU signal analysis module is used for analyzing and processing each short-time sequence datum, and outputting the datum obtained in a processing way, namely the frequency diversity characteristic, the frequency, the frequency root-mean-square error, the phase jump characteristic and the like; and the CPU signal analysis module is used for analyzing the GPU output data, counting diversity proportion in each short-time sequence belonging to the same impulse, carrying out the least square fit on an instantaneous frequency value in each short-time sequence to obtain a frequency modulation gradient and fit the root-mean-square error, counting the instantaneous frequency mean root-mean-square error and the effective phase jump, and judging the intra-pulse modulation types according to each characteristic parameter. The GPU-based radar signal intra-pulse characteristic real-time analysis realizing scheme is better in processing instantaneity, and further has the advantages of being simple in structure, high in expansibility, easy to maintain, and capable of being upgraded.

Description

1. Technical field [0001] The invention relates to the technical field of electronic countermeasures and reconnaissance, and is mainly used for real-time analysis of the internal modulation characteristics of radar signal pulses by electronic reconnaissance equipment. 2. Background technology [0002] With the advancement of technology, various radars are vying to adopt advanced modulation technology. There are fewer and fewer radars with fixed pulse repetition frequency and carrier frequency, and the signal environment is becoming more and more complex. It is increasingly difficult for electronic reconnaissance equipment to analyze specific target information from signal carrier frequency, pulse repetition frequency, pulse width and other parameters, and then obtain valuable intelligence. Electronic reconnaissance shifts the focus to analyzing the modulation signatures within radar pulses, known as electronic "fingerprints." [0003] Several wars in the past two decades ha...

AI Technical Summary

Problems solved by technology

Theoretically, GPU already has the ability to directly process massive broadband data, but so far there is no report on using GPU to analyze radar intrapulse features in real time

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