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Emission waveform and position joint estimation based passive positioning method for multiple emission sources

A passive positioning and joint estimation technology, applied in radio wave measurement systems, instruments, etc., to solve problems such as limited positioning accuracy of weak non-cooperative target emission sources

Active Publication Date: 2017-02-01
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0004] The purpose of the invention is: in order to solve the problem of limited positioning accuracy of multiple weak non-cooperative target emitters in the current technology, the present invention proposes a passive positioning method for multiple emitters based on joint estimation of emission waveforms and positions

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  • Emission waveform and position joint estimation based passive positioning method for multiple emission sources
  • Emission waveform and position joint estimation based passive positioning method for multiple emission sources
  • Emission waveform and position joint estimation based passive positioning method for multiple emission sources

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[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0054] Such as figure 1 As shown in FIG. 1 , it is a schematic flow chart of the multi-radiation source passive positioning method based on joint estimation of emission waveform and position of the present invention. A method for passive positioning of multiple emission sources based on joint estimation of emission waveforms and positions, comprising the following steps:

[0055] A. Initialize the radar system parameters, wherein the radar system parameters include the number of receivers L, the position coordinates of each receiver (x l ,y l ,z l ), l=1,2,...,L, sampling interval T s , the no...

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Abstract

The invention discloses an emission waveform and position joint estimation based passive positioning method for multiple emission sources. According to the invention, a mesh search method estimates successively both the waveform of the signals and the position of an emission source from the receiver measurement and after the estimation of the position of a previous emission source and the waveform of the emission signals, the information of the previous emission signal is deleted from the measurement vectors, followed by the updating of the measurement vectors. After that, the mesh search method is used again to position the next emission source. Through the full use of the waveform information of each emission signal, effective positioning can be realized for a plurality of weak emission sources. In addition, the method can be applied to a wide range of waveforms, and can also be directly applied to the high precision positioning of multiple objects of an existing passive radar. With good application effects, the method promises great possibilities.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, in particular to a multi-radiation source passive positioning method based on joint estimation of emission waveforms and positions. Background technique [0002] In recent years, with the increasingly fierce electronic warfare, the high-precision positioning of weak targets in complex environments has received more and more attention. At the same time, the rapid development of chip technology has greatly improved the data processing capabilities of processors, and the processing of big data has become more and more realistic. Passive positioning technology has received more and more attention due to its many advantages such as concealment and low power consumption. Passive positioning usually uses several widely distributed radar base stations to intercept the emission signal of the target emission source. Compared with active radar, since the radar itself does not need the emiss...

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 易伟谌振华王佰录李帅孔令讲杨晓波崔国龙
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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