Passive radar target positioning method and system based on external radiation source

Abstract

The invention discloses a passive radar target positioning method and system based on an external radiation source, and relates to the technical field of radar positioning, and the method comprises the steps: screening an external radiation source signal set of a target monitoring region, laying a distributed receiving antenna array based on the signal set, receiving a signal in real time, and transmitting the signal to a quality evaluation unit; the quality evaluation unit adaptively screens the signal and outputs a standard radiation source signal with a radiation source type identifier; and carrying out feature parameter extraction on the standard signal to obtain a multivariate signal feature set, and carrying out multi-band signal fusion and target positioning analysis based on the feature set to generate target position information. According to the invention, the technical problems of complex signal processing, insufficient positioning precision and limited dynamic monitoring capability of the existing passive radar technology in a complex electromagnetic environment are solved, and multi-band signal fusion and adaptive signal processing are realized. And the positioning precision and the dynamic monitoring capability of the passive radar in a complex environment are improved.

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