External radiation source radar real-time signal processing method based on multi-CPU processing

Abstract

The invention relates to the technical field o radar systems, discloses an external radiation source radar real-time signal processing method based on multi-CPU processing, and a multi-CPU computer or server is utilized to realize external radiation source radar real-time signal processing with a general programming language, thereby increasing the flexibility of realization of signal processing of an external radiation source radar. The whole signal processing process of the external radiation source radar is split into a plurality of processing steps of clutter suppression, correlation processing and target detection, each step runs on a different CPU resource, the processing time of each step is smaller than accumulation time of a set of data, i.e., if a signal loss phenomenon does not occur, continuity and real-time performance of signal processing are realized, and through the method provided by the invention, clutter cancellation processing can be completed, the flexibility of signal processing of the external radiation source radar is improved, and real-time performance of signal processing of the external radiation source radar is realized. In addition, the development period of signal processing of the external radiation source radar can also be shortened, and requirements for development technicians by signal processing of the external radiation source radar are lowered.

Description

technical field [0001] The invention relates to the technical field of radar systems, in particular to a method for processing real-time signals of external radiation source radar based on multi-CPU processing. Background technique [0002] At present, external radiation source radar is a bistatic / multistatic radar system that uses electromagnetic signals (such as TV signals and broadcast signals) emitted by third-party equipment to detect aircraft targets. The system radar itself does not emit energy, but passively receives the electromagnetic signal of the third-party equipment reflected by the target, and tracks and locates the target [1][2]. [0003] External radiation source radar target detection usually adopts passive correlation positioning technology, and at least two channels must be set in the receiving system: monitoring channel and reference channel, which are used to receive target echo signals and reference signals respectively; then through the monitoring cha...

AI Technical Summary

Problems solved by technology

Using this method, although the softwareization of signal processing has been realized, the programming process must have a deeper understanding of the structure and characteristics of the GPU card, and at the same time must learn to use a professional GPU programming function language, such as using NVIDIA (NVIDIA) The CUDA C extended programming language provided by the company cannot be directly programmed with a generalized programming language (such as C, C++, etc.), which also increases the difficulty of implementing radar signal processing for external radiation sources

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