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Double-satellite tracking method, device and system for moving target

A moving target, double star technology, applied in the field of target tracking, can solve the problem of less research on the positioning and tracking of high-speed moving targets in the air

Active Publication Date: 2015-11-11
36TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For the satellite positioning system of stationary (or low-speed) radiation sources on the ground, there are many research results at present, but there are few researches on the positioning and tracking of high-speed moving targets in the air

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  • Double-satellite tracking method, device and system for moving target
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  • Double-satellite tracking method, device and system for moving target

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Embodiment Construction

[0066] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0067] figure 1 It is a flow chart of a double-star tracking method for a moving target provided by an embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0068] Step S110, the main satellite performs radio direction finding on the moving target, and obtains the angle of arrival (DOA) of the moving target.

[0069] In one embodiment of the present invention, the main star performs radio directi...

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Abstract

The invention discloses a double-satellite tracking method and device for a moving target. A main satellite carries out radio direction finding on the moving target to obtain direction of arrival (DOA) of the moving target; the main satellite estimates signal arrival time difference (TDOA) and signal arrival frequency difference (FDOA) according to a target signal x(t), received by the main satellite itself, of the moving target and a target signal y (t), transmitted by an auxiliary satellite through inter-satellite communication, of the moving target; and the main satellite estimates position and speed of the moving target at each moment by utilizing a particle filtering algorithm according to the direction of arrival, the signal arrival time difference and the signal arrival frequency difference, so that not only positioning and tracking of the high-speed moving target in the air can be realized to obtain the position and speed of the moving target, but also recursive estimation of position and speed state quantity of the moving target, which cannot be realized in the prior art, can be realized, and result precision is improved greatly.

Description

technical field [0001] The invention relates to the field of target tracking, in particular to a method and device for dual-star tracking of a moving target. Background technique [0002] Estimating the position of the radiation source based on the radio signals radiated by the radiation source is one of the important tasks of a large number of satellites in orbit. According to the positioning system, the space-borne passive positioning system can be divided into direction-finding positioning, time difference positioning, frequency difference positioning, time-frequency difference positioning, etc.; according to the number of satellites participating in the radiation source positioning, the space-borne passive positioning system can be divided into single-satellite positioning Positioning system, dual-satellite positioning system, three-satellite positioning system and four-satellite positioning system, comprehensively considering the positioning performance and implementati...

Claims

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Application Information

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IPC IPC(8): G01S5/02
CPCG01S5/0268
Inventor 尤明懿
Owner 36TH RES INST OF CETC
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