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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

Active Publication Date: 2020-12-01
XIDIAN UNIV
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Problems solved by technology

At present, the main idea of ​​the research on deceptive jamming suppression is to improve the flexibility of the radar, making it difficult for the jamming radar to obtain its signal waveform, thereby making the deceptive jamming signal invalid
However, with the improvement of the performance of the electronic jamming system, when the jamming radar system can effectively implement jamming, the existing methods are almost ineffective in the face of deceptive jamming

Method used

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  • Deception jamming suppression method based on time diversity array MIMO radar
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  • Deception jamming suppression method based on time diversity array MIMO radar

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Embodiment Construction

[0021] Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention.

[0022] refer to figure 1 , the deceptive interference suppression method based on time diversity array MIMO radar provided by the present invention comprises the following steps:

[0023] Step 1, establish a TDA-MIMO radar model, and obtain the TDA-MIMO radar transmit-receive-Doppler domain steering vector a(Δt(k),θ,v);

[0024] refer to figure 2 , to establish a TDA-MIMO radar model: assuming that the TDA-MIMO radar has M transmitting array elements, N receiving array elements, M transmitting array elements are equidistant linear arrays, and the interval between adjacent transmitting array elements is d T , the N receiving array elements are equidistant linear arrays,...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36G01S7/42G01S7/41
CPCG01S7/36G01S7/42G01S7/41Y02D30/70
Inventor 朱圣棋余昆朱晶晶刘永军许京伟曾操
Owner XIDIAN UNIV
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