Deception jamming suppression method based on time diversity array MIMO radar

A technology of deceptive interference and time division, applied in radio wave measurement systems, instruments, etc., can solve problems such as failure, difficulty in obtaining signal waveforms for jamming radars, failure of deceptive jamming signals, etc., achieving remarkable results and improving target detection performance
CN112014805AActive Publication Date: 2020-12-01XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2020-12-01

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Abstract

The invention discloses a deception jamming suppression method based on a time diversity array MIMO radar, and the method comprises the following steps: building a TDA-MIMO radar model, and obtaininga transmitting-receiving-Doppler domain steering vector; establishing an echo data model of the TDA-MIMO radar; constructing a three-dimensional time-varying compensation vector; performing three-dimensional time-varying compensation on the echo data model to obtain a real target frequency spectrum; and processing the echo data after three-dimensional time-varying compensation by adopting a robustdirect data domain processing method to realize self-adaptive suppression of deception jamming. According to the method, the time diversity array is introduced, a tiny time delay delta t is introduced between every two transmitting array elements, and the controllability of array element delay between different pulses is utilized such that the degree of freedom of the system is improved, and theanti-deception jamming performance of the radar is improved.
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Description

technical field

[0001] The invention belongs to the technical field of radar signal processing, in particular to a deceptive interference suppression method based on time diversity array MIMO radar. Background technique

[0002] Multiple-input multiple-output (MIMO) radars offer several advantages over traditional phased array radars. Different transmitting elements of MIMO radar emit mutually orthogonal waveforms, and the echo of each transmitting element is processed on each receiving element at the receiving end. Therefore, MIMO technology can greatly expand the angular scanning of the radar range, and different angles of transmit-receive domain beams can be simultaneously beamformed.

[0003] With the development of modern electronic system technology, the electronic interference faced by the radar system is becoming more and more serious. For example: the real-time false target generator can intercept radar signals and generate a large number of false target copies, w...

Claims

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