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A distributed passive positioning method and device combining time difference and angle

A passive positioning and distributed technology, applied in positioning, measurement devices, radio wave measurement systems, etc., can solve the problems of inaccurate positioning, local convergence and difficulty in obtaining initial positioning values.

Active Publication Date: 2020-11-03
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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Problems solved by technology

[0005] The purpose of the present invention is to provide a distributed passive positioning method and device that combines time difference and angle to solve the problem of inaccurate positioning due to local convergence and difficulty in obtaining initial positioning values ​​in existing passive positioning technologies

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  • A distributed passive positioning method and device combining time difference and angle
  • A distributed passive positioning method and device combining time difference and angle
  • A distributed passive positioning method and device combining time difference and angle

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Embodiment Construction

[0080] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0081] Such as figure 1 As shown, a kind of joint time difference and angle distributed passive positioning method provided by the present invention includes: 1) using the azimuth angle parameter to combine the azimuth angle with the target radiation source and each observation station s i The distance relationship between is deformed into a linear expression; 2) Using the pitch angle parameter, the pitch angle and the target radiation source and each observation station s i The distance relationship between is transformed into a linear expression; 3) With the help of angle information, the time difference parameter is transformed into the relation between the target radiation source and each observation station s i 4) Integrate the respective linear expressions of azimuth, elevation and time difference, and use least squares to obtain the initial position s...

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Abstract

The invention relates to the field of distributed passive positioning, in particular to a distributed passive positioning method and device combining time difference and angle. According to the distributed passive positioning method and device combining time difference and angle, the positioning equations of azimuth angle, pitch angle and time difference are linearized, and then a least square method is carried out to solve to obtain a position initial solution of a target radiation source, a weighting matrix is constructed according to the position initial solution, and a position accurate solution is further obtained by a weighted least square method. The distributed passive positioning method and device combining time difference and angle reduces the synchronization difficulty between observation points and reduces the dependence of a system on reference stations; distributed target radiation source positioning combining time difference and angle is achieved without the need for prior initial value of target radiation source position; and meanwhile, the distributed passive positioning method and device combining time difference and angle is a global optimal solution because thedistributed passive positioning method and device combining time difference and angle is in the form for an unknown parameter algebraic closed-form solution.

Description

technical field [0001] The invention relates to the field of distributed passive positioning, in particular to a distributed passive positioning method and device combining time difference and angle. Background technique [0002] Passive positioning technology is an important means of target information acquisition, by receiving the radiation signal of the target radiation source itself to monitor and locate it. Among them, the positioning system of joint angle and time difference has high positioning accuracy, and has received extensive attention and application at home and abroad in recent years, and is widely used in radar, sonar and multi-wireless sensors. [0003] The traditional centralized passive positioning technology that combines time difference and angle is relatively mature. In the actual environment, the time synchronization of this constitution is difficult, and it is not suitable for multi-sensor and multi-receiving station scenarios. Sometimes the number of...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/00
CPCG01S5/00
Inventor 胡德秀刘智鑫赵拥军黄洁赵勇胜张睿刘亚奇
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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