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A Near Space Hypersonic Target Tracking Method Based on Target Mode Estimation

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

Active Publication Date: 2017-01-11
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 the adjacent Compared with single-mode tracking, space hypersonic target tracking 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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  • A Near Space Hypersonic Target Tracking Method Based on Target Mode Estimation
  • A Near Space Hypersonic Target Tracking Method Based on Target Mode Estimation
  • A Near Space Hypersonic Target Tracking Method Based on Target Mode Estimation

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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 scanning area of ​​the ground-based radar, and the data collected by the radar is the measurement data (r, θ, ) and target Doppler information (Doppler)f d , r represents the target distance, θ represents the target orientation, Indicates the pitch angle of the target. The polar coordinate system measurement data (r, θ, ) into 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 γ m cosθ m cosε m

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Abstract

The present invention provides a hypersonic target tracking method in near space based on target mode estimation, using an interactive multi-model tracking algorithm to track the target, and dynamically estimating the target motion mode in real time, and judging the target motion mode by statistical target characteristics; finally, according to The estimated target motion mode is transferred to the corresponding single-mode matching tracking, which avoids the competition among multiple models, and solves the problems of complex calculation and low tracking accuracy caused by large model competition in the existing near-space hypersonic tracking algorithm. The invention has small calculation amount and high tracking precision, and effectively improves the overall 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 Patents(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