Three-dimensional space bistatic/multistatic radar high-speed target detection method

A three-dimensional space, high-speed target technology, applied in the field of three-dimensional space bistatic/multistatic radar high-speed target detection, can solve the problems of poor bistatic radar adaptation performance, target Doppler frequency migration, and insufficient algorithm accuracy, etc., to achieve Excellent target information acquisition ability, improved estimation accuracy, and improved signal-to-noise ratio
CN111551922APending Publication Date: 2020-08-18XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2020-08-18

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Abstract

According to a three-dimensional space bistatic / multistatic radar high-speed target detection method disclosed by the invention, the problems of high-speed target detection and motion parameter estimation in the three-dimensional space are solved. The method comprises the following steps: acquiring a radar echo signal; acquiring a radar baseband signal; acquiring a frequency domain pulse pressuresignal; correcting the range migration of the target echo signal by adopting generalized second-order Keystone transformation; obtaining data of a distance unit where the target is located; correctingDoppler frequency migration of the target echo signal by adopting a product type three-order phase function; and carrying out azimuth accumulation on the signals and estimating motion parameters. According to the invention, range walk, range bending, Doppler migration time primary term and time secondary term are corrected at the same time; according to the geometric space characteristics of thebistatic radar and the target, various parameters of the target are well estimated, the parameter estimation precision is higher, the probability of successfully distinguishing the target is higher, the cost is lower, the application range is wider, and the method is used for high-speed high-maneuverability target detection and motion parameter estimation in a three-dimensional space.
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Description

technical field

[0001] The invention belongs to the technical field of bistatic / multistatic radar, and particularly relates to target detection and parameter estimation, and specifically relates to a high-speed target detection method for bistatic / multistatic radar in three-dimensional space, which is used for detecting high-speed, high-mobility weak targets under the dual / multistatic radar system. detection and parameter estimation. Background technique

[0002] Different from the monostatic radar, the transmitting station and the receiving station of the bistatic radar are separated, and the receiving echo delay is the result of the interaction between the target and the range history of the transmitter and receiver respectively. Similarly, the distance migration of the target echo is also the target The sum of the effects of the radial movement relative to the transmitter and the radial movement relative to the receiver makes the bistatic radar more prone to range migrati...

Claims

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