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Method for positioning non-cooperative target in passive positioning system based on cell mobile base station

A non-cooperative target and cellular mobile technology, applied in the field of space target positioning, to achieve the effects of convenient application, high positioning accuracy, and simple input values

Active Publication Date: 2011-03-16
重庆九洲星熠导航设备有限公司
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Problems solved by technology

The main disadvantage of this method is that it is necessary to set an initial value with little deviation from the actual position to ensure the convergence of the iterative operation

Method used

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  • Method for positioning non-cooperative target in passive positioning system based on cell mobile base station
  • Method for positioning non-cooperative target in passive positioning system based on cell mobile base station
  • Method for positioning non-cooperative target in passive positioning system based on cell mobile base station

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Embodiment

[0019] Example: see figure 1 As shown, at least four signal detection devices are arranged in the area covered by the cellular mobile base station signal according to a certain geometric distribution, and the positions of each detection device are measured (X i , Y i ,Z i ) and the location of the cellular mobile base station (X 0 , Y 0 ,Z 0 ). When a target enters the detection area, the reflected signal of the target to the cellular mobile base station and the direct signal of the base station are received by each detection device at the same time, and the detection device measures the time difference of arrival TDOA of the two signals i , let the propagation velocity of the electromagnetic wave be c, and the position to be determined of the target be (x, y, z). Order R i，1 Indicates the distance difference between the target and the receiving station i and receiving station 1, then

[0020] R ...

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Abstract

The invention relates to a method for positioning non-cooperative target in passive positioning system based on cell mobile base station. The method mainly includes: at least four signal intercepting devices are arranged in the coverage area of cell mobile base station signal, direct signal of base station and reflected signal of a target to the base station are received, time difference of the direct signal and the reflected signal which reach each intercepting device is determined, and the position of the target is finally determined according to the position of each intercepting device, the position of cell base station and signal velocity. The invention has the advantages that input value of formula for calculating the position of target is simple, positioning accuracy is high, and real-time performance is good. The method of the invention also can be applied to other similar positioning problems conveniently.

Description

technical field [0001] The invention relates to the technical field of space target positioning, in particular to a non-cooperative target positioning method in a passive positioning system based on cellular mobile base stations. Background technique [0002] The passive positioning system adopts dual (multi-base) radar technology based on radio communication and propagation, and the transmitter and signal detection equipment are respectively set in different places, which has the comprehensive functions of anti-jamming, anti-anti-radiation missile, anti-low-altitude penetration and anti-stealth "Four resistance" potential. Using cellular mobile base stations as external radiation sources not only saves energy, reduces electromagnetic pollution, but also solves the concealment of dual (multi-base) radar systems. [0003] Passive positioning methods can be divided into azimuth positioning method, time difference positioning method, Doppler frequency difference positioning me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W56/00H04W64/00
Inventor 张继宏
Owner 重庆九洲星熠导航设备有限公司
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