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Amplitude information based path optimization method for receiving station under clutter condition

A path optimization and receiving station technology, applied in the field of target tracking, can solve problems such as complex calculation, and achieve the effect of reducing the amount of calculation, improving accuracy and real-time performance

Active Publication Date: 2019-11-05
河北凯通信息技术服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Sensor path optimization initially uses information entropy as the optimization index, and the calculation is relatively complicated

Method used

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  • Amplitude information based path optimization method for receiving station under clutter condition
  • Amplitude information based path optimization method for receiving station under clutter condition
  • Amplitude information based path optimization method for receiving station under clutter condition

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing. The specific implementation steps are as follows:

[0017] The path optimization method of the receiving station based on the amplitude information in the case of clutter, such as figure 2 As shown, specifically:

[0018] Step 1: Establish a mathematical model of a passive co-location system with a receiving station and an external radiation source in two-dimensional space.

[0019] Considering the dual base station PCL system with cooperative external radiation source, including a receiving station and an external radiation source, such as figure 1 shown. Note that the state of the kth frame is x represents the position in the x-axis direction, Indicates the speed in the x-axis direction, y indicates the position in the y-axis direction, Indicates the velocity in the y-axis direction. The state of the radiation source at frame k is The state of the receiving sta...

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Abstract

The invention discloses an amplitude information based path optimization method for a receiving station under a clutter condition. A mathematical model of a passive coordinated positioning system including the receiving station and an external radiation source is established. A target state is predicted, and a path optimization model is established and solved. A track is updated, and a filtering algorithm is used to estimate the target state; The updated target state and a covariance are returned to the path optimization model for prediction, and k=k+1 till that sampling is ended. Compared with the prior art that amplitude information is added to measurement, the clutter condition is taken into consideration, the method satisfies practical engineering application more, and the computational complexity is reduced by taking PCRLB as an optimization index. The target positioning tracking precision and instantaneity of the passive coordinated positioning system can be improved.

Description

technical field [0001] The invention belongs to the technical field of target tracking, and relates to a method for optimizing a path of a receiving station based on amplitude information in the case of clutter. Background technique [0002] Passive coherent positioning is also called passive coherent location (Passive Coherent Location, PCL), which means that the radar itself does not emit electromagnetic waves, but through the direct wave signal of the external radiation source and the signal reflected by the target, the passive positioning of the target is realized through coherent processing. Compared with the traditional active radar, the PCL system is small in size, strong in anti-jamming ability, silent by itself, and has strong survivability. [0003] In the passive coherent positioning system (PCL), the geometric relationship between the receiving station, the external radiation source and the target affects the positioning accuracy. At present, many technicians ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/414
Inventor 郭云飞边利华郭宝峰左燕薛梦凡
Owner 河北凯通信息技术服务有限公司
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