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

A technology of external radiation source radar and its implementation method, which is applied in the field of radar signal processing, and can solve problems such as high implementation cost, poor precision, and complex hardware structure

Inactive Publication Date: 2012-12-26
XIDIAN UNIV
View PDF4 Cites 38 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 me

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • CPU (Central Processing Unit) realizing method based on amplitude-comparison direction finding of multi-frequency point omnibearing passive radar
  • CPU (Central Processing Unit) realizing method based on amplitude-comparison direction finding of multi-frequency point omnibearing passive radar
  • CPU (Central Processing Unit) realizing method based on amplitude-comparison direction finding of multi-frequency point omnibearing passive radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Aiming at the disadvantage that the signals emitted by traditional active radars are easy to be detected and intercepted by the enemy, a real-time processing system for radar signals with multi-frequency points and multi-wave speed external radiation sources is proposed, see figure 1 , the system is a large system with complex functions including multiple inventions and innovations. The basic composition includes an antenna receiving part, a radar signal real-time processing part, and a terminal display part according to the direction of signal transmission and processing. The present invention is a multi-frequency point external radiation source Radar signal real-time processing part of the radar signal real-time processing part of the ratio angle measurement part.

[0062] The present invention is a CPU implementation method based on multi-frequency point omnidirectional external radiation source radar ratio amplitude direction finding. The implementation method is us...

Embodiment 2

[0078] The CPU implementation method based on multi-frequency point omnidirectional external radiation source radar ratio amplitude direction finding is the same as that in Embodiment 1.

[0079] refer to figure 1 , the CPU implementation method of the multi-frequency point omnidirectional external radiation source radar ratio amplitude direction finding proposed by the present invention is applied to the external radiation source radar processing system, and the external radiation source radar processing system consists of 8 array element antennas, data receivers, based on CPU+ It consists of a signal processor with GPU heterogeneous parallel architecture and a terminal display and control platform. Among them, the 8-element antenna receives FM broadcast signals. The received signals mainly include target signals, direct wave signals, ground clutter and multipath clutter signals. These signals are received by the data receiver, and after channel equalization and down-convers...

Embodiment 3

[0083] The CPU implementation method based on the multi-frequency point omnidirectional external radiation source radar ratio amplitude direction finding is the same as that of embodiment 1-2. The multi-frequency point omnidirectional external radiation source radar detection system is composed of 8 frequency points through digital beamforming to form 18 beams respectively. Beams, and then each beam passes through the signal processor to obtain the points that pass the threshold in this beam. The threshold value is an empirical value, which is used to filter out false alarm targets in constant false alarm detection, so the points that pass the threshold are filtered out The points after most of the false alarm targets, and then all the points that pass the threshold of each frequency point pass through the amplitude angle measurement module to obtain the target points containing azimuth information in this frequency point, and finally transmit the target points of all frequency ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S3/16G01S3/12
Inventor 王俊贾永胜武勇谢梦瑶
Owner XIDIAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap