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Sky wave radar multi-path measurement clustering method

A clustering method and multi-path technology, applied to radio wave measurement systems, instruments, character and pattern recognition, etc., can solve the problems of track redundant targets, rarely study track start, missing follow, etc., to reduce The effect of operation time

Pending Publication Date: 2022-01-14
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

Incorrect track initiation can lead to track redundancy or missed targets
However, current measurement-grade tracking algorithms focus mainly on the tracking phase and rarely study track initiation

Method used

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  • Sky wave radar multi-path measurement clustering method

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Embodiment Construction

[0045]In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

[0046] see Figure 1-Figure 7 , the technical solution of the present invention is: a sky-wave radar multi-path measurement clustering method, comprising the following steps:

[0047] Step 1: System modeling and problem description, includi...

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Abstract

The invention relates to a sky wave radar multi-path measurement clustering method, which comprises the following steps that firstly, a similarity propagation clustering model isexpanded to multi-path clustering, and a multi-path clustering constraint is constructed; then, a clustering variable joint probability density function and a corresponding factor graph are constructed; a simulation result shows that compared with a multi-hypothesis clustering algorithm, the multi-path similarity propagation clustering algorithm has the advantage that the operation time can be greatly shortened under the condition that the detection accuracy, the omission factor, the root-mean-square error, the OSPA and the operation time performance indexes are equivalent. Compared with an existing sky wave radar multi-path measurement clustering algorithm, the method has the advantage that the operation time can be greatly shortened under the condition that the detection accuracy, the omission ratio, the root-mean-square error, the OSPA and the operation time performance indexes are equivalent.

Description

technical field [0001] The invention belongs to the technical field of sky-wave radar multi-path measurement clustering subsystem in the field of radar data processing, and in particular relates to a sky-wave radar multi-path measurement clustering method. Background technique [0002] Sky-wave radar uses the reflection of electromagnetic waves between the ionosphere and the ground / sea surface to transmit high-frequency energy, which can realize remote early warning of high-value targets. Since there are multiple ionospheric propagation paths between the target and the radar station, a single target will produce multi-path measurements in the radar ray coordinate system, which may lead to multi-path tracks, resulting in misjudgment of situational awareness and intelligence. Therefore, multipath measurement brings severe challenges to sky wave radar data processing. [0003] The existing sky-wave radar data processing mainly focuses on target tracking, which can be divided i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G06K9/62
CPCG01S7/414G06F18/23
Inventor 兰华白向龙王增福潘泉
Owner NORTHWESTERN POLYTECHNICAL UNIV
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