CPU (Central Processing Unit) realizing method based on amplitude-comparison direction finding of multi-frequency point omnibearing passive radar

Abstract

The invention discloses a CPU (Central Processing Unit) realizing method based on amplitude-comparison direction finding of a multi-frequency point omnibearing passive radar. A CPU and GPU (Graphic Processing Unit) heterogeneous hardware platform is adopted; a processing module with strong parallelism and the processing module with strong logicality are respectively realized on the GPU and the CPU; the platform is simple and high in use ratio; a system is simple in operation and strong in flexibility when being expanded; the coagulation and the angle measurement are carried out in the CPU; specifically, a coagulating-while-comparing amplitude angle measuring method is adopted; trace point coagulation is combined with amplitude-comparison angle measurement, so that the time for recombining the data after coagulation is omitted; the coagulation and angle measurement processes are embedded in multithreading, so that the time is further saved; and a target point containing the angle information is transferred to a terminal display control platform. According to the CPU realizing method provided by the invention, the problems that a target positioning effect of a single-frequency passive radar detecting system is inferior, the multi-frequency precision is high but the calculated quantity is large and the consumed time is long are solved. The CPU realizing method has the advantages of high processing speed, high angle measuring precision, and wide angle measuring scope, and can be applied to the target detection and positioning for the passive radar.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, and in particular relates to a radar passive direction finding method, specifically a CPU implementation method based on multi-frequency point omnidirectional external radiation source radar ratio amplitude direction finding, which can be implemented under the Visual studio software integrated development platform , Realize the radar system amplitude ratio direction finding based on multi-frequency point omnidirectional on CPU. technical background [0002] In recent years, the passive radar detection technology using radio, television, satellite and other civil radiation sources has been paid more and more attention in the radar field. The passive radar system itself does not need to transmit signals, but uses the existing electromagnetic wave signals in the environment or the target itself for target detection and positioning, so it solves the problem that the transmitted signal...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the detection performance of the single-frequency point direction-finding method of the external radiation source radar, which is poorer than that of conventional radar systems, and the existing multi-frequency point omnidirectional external radiation source radar ratio amplitude direction-finding method has complex algorithms, Complicated hardware structure, high implementation cost, etc. A CPU implementation method for multi-frequency point omnidirectional external radiation source radar ratio amplitude direction finding is proposed, which is simple to implement, has strong versatility in platform settings, is easy to transplant, expandable, and has strong applicability

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