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A method, device and system for spaceborne three-dimensional positioning of moving targets

A technology of moving target and three-dimensional position, which is applied in the field of three-dimensional positioning of moving targets on board, can solve problems such as poor positioning accuracy, achieve poor positioning accuracy, fast three-dimensional positioning, and achieve long-term continuous three-dimensional positioning and high precision. The effect of adaptive tracking

Active Publication Date: 2017-04-05
36TH RES INST OF CETC
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Problems solved by technology

[0007] The present invention provides a method, device and system for three-dimensional positioning of moving targets on spaceborne objects to solve the problem of poor positioning accuracy of the existing three-dimensional positioning technology

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  • A method, device and system for spaceborne three-dimensional positioning of moving targets

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] figure 1 It is a flow chart of a spaceborne three-dimensional positioning method for a moving target provided by an embodiment of the present invention. The method includes:

[0035] S100, the main star uses the sum-difference monopulse direction-finding technology to adaptively track and find the moving target, and obtain the direction-finding line from the main star to the moving target.

[0036] Specifically, the main star receives the signal sent by the moving target, and the feeder forms and outputs the sum signal, azimuth difference signal, and pitch difference signal to the tracking receiver;

[0037] Receive an azimuth error voltage ΔV from the tracking receiver A and pitch error voltage △V E ;

[0038] According to ...

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Abstract

The invention discloses a satellite-borne three-dimensional moving object positioning method, device and system. The satellite-borne three-dimensional moving object positioning method comprises the steps of adopting a sum-difference single-pulse direction-finding technology to achieve high-accuracy self-adaption tracking and direction finding on a moving object, conducted by a main satellite, obtaining antenna wave beam pointing information from the main satellite to the moving object; performing same-source signal correlation estimation on the main satellite to obtain the difference of arrival time of a moving object transmitted signal arrived at the main satellite and arrival time of the moving object transmitted signal arrived at an auxiliary satellite according to the moving object signal sent by a receiving auxiliary satellite and detected by the auxiliary satellite, and establishing a constant time difference equation of the main satellite and a constant time difference equation of the auxiliary satellite to obtain a constant time difference curved surface of the main satellite and a constant time difference curved surface of the auxiliary satellite; positioning three-dimensional location information of the moving object according to the antenna wave beam pointing information from the main satellite to the moving object and the intersection point of the constant time difference curved surface of the main satellite and the constant time difference curved surface of the auxiliary satellite. By means of the technical scheme, the sum-difference single-pulse direction-finding technology and a double-satellite constant time difference positioning technology, the main satellite can continuously conduct high-accuracy self-adaption tracking and direction finding on the moving object on a space-based platform for a long period of time, and a credible three-dimensional positioning result can be obtained.

Description

technical field [0001] The invention relates to the technical field of passive positioning and tracking, in particular to a three-dimensional positioning method, device and system for a moving target carried by space. Background technique [0002] The satellite-based positioning system for moving targets is divided into single-satellite positioning and multi-satellite positioning according to the number of satellites required. [0003] Specific methods for single-satellite positioning include direction finding positioning, frequency measuring positioning, direction finding / phase difference change rate positioning, direction finding / frequency measuring positioning, etc. Among them, the direction finding positioning is to use the first intersection point between the satellite to the radiation source (line of sight) and the spherical surface of the earth as the position of the radiation source, which can only realize two-dimensional positioning, and cannot locate the air target...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/46
CPCG01S19/42
Inventor 顾黎明尤明懿张小林
Owner 36TH RES INST OF CETC
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