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Target modal estimation based near-space hypersonic velocity target tracking method

A near-space, hypersonic technology, applied in radio wave reflection/re-radiation, using re-radiation, measurement devices, etc., can solve problems such as large amount of calculation and poor tracking accuracy, achieve small amount of calculation, improve overall performance, The effect of high tracking accuracy

Active Publication Date: 2014-12-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

In the document "Research of Method for Tracking High Speed ​​and Highly Maneuvering Target, International Conference on ITS Telecommunications Proceedings, 1236-1239, 2006", a tracking algorithm based on interactive multi-mode structure is proposed, which uses multiple different maneuvering models to interact with each other Compared with single-mode tracking, the tracking of hypersonic targets in the adjacent space has a wider coverage and greater maneuverability; however, the competition between the algorithm models leads to poor tracking accuracy and a large amount of calculation

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  • Target modal estimation based near-space hypersonic velocity target tracking method
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  • Target modal estimation based near-space hypersonic velocity target tracking method

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Embodiment Construction

[0022] Adopt the method for computer simulation to verify the effect of the present invention, by MATLAB-R2010b, implementation steps are as follows figure 1 Shown:

[0023] Step 1. Radar data conversion

[0024] The tracked target enters the ground-based radar scanning area, and the data collected by the radar is measurement data and target Doppler information (Doppler)f d , r represents the target distance, θ represents the target orientation, Indicates the pitch angle of the target. Using the modified measurement unbiased transformation method MUCMKF to convert the measurement data of the polar coordinate system Convert to the Cartesian coordinate system to obtain the converted measurement data in Respectively represent the target position measured in the Cartesian coordinate system after conversion;

[0025] x m u = λ θ λ ϵ ...

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Abstract

The invention provides a target modal estimation based near-space hypersonic velocity target tracking method, which comprises the steps of: tracking a target by utilizing an interactive multi-model tracking algorithm, estimating a target movement mode dynamically and in real time, judging the target movement mode by counting target characteristics, and finally turning to corresponding single-mode matched tracking based on the estimated target movement mode. Competition among multiple models is avoided, and the problems of low tracking precision and the like caused by complex calculation and great model competition of an existing near-space hypersonic velocity tracking algorithm are solved. The target modal estimation based near-space hypersonic velocity target tracking method is low in calculation amount and high in tracking precision, and effectively improves the integral performance of the tracking system.

Description

technical field [0001] The invention belongs to the radar signal processing technology, in particular to the tracking technology of a hypersonic typical moving target in the adjacent space. Background technique [0002] Near space refers to the airspace at a height of 20-100Km from the ground, and the speed of a hypersonic vehicle in near space can reach Mach 4-20. At present, hypersonic target tracking in near space is a hot spot in the tracking field. The complexity of the movement of maneuvering targets in near space and the variability of the operating environment make it difficult to establish accurate tracking models for such targets. The development of stealth technology has made it more difficult to track hypersonic targets in near space. [0003] At present, the interactive multi-model (IMM) structure tracking algorithm is recognized as the most effective tracking algorithm for hypersonic targets in near space. In the document "Research of Method for Tracking High...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/66
CPCG01S13/66G01S13/723
Inventor 易伟董天发苟清松郝凯利崔国龙孔令讲杨建宇李小龙夏玫
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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