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Element-pulse-coding MIMO radar deception jamming suppression method

A pulse coding, lobe spoofing technology, applied in the radar field, can solve the problem of poor performance against main lobe spoofing jamming

Active Publication Date: 2021-04-02
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in FDA-MIMO radar, it is necessary to perform range gate compensation on the received data first, and the range quantization error after compensation is inevitable.

Method used

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  • Element-pulse-coding MIMO radar deception jamming suppression method
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  • Element-pulse-coding MIMO radar deception jamming suppression method

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Embodiment 1

[0052] See figure 1 , figure 1 It is a flow chart of an array element-pulse code MIMO radar deceptive interference suppression method provided by an embodiment of the present invention. As shown in the figure, this method designs the coding coefficients and compensation vectors so that the false target is effectively suppressed just at the zero point of the pattern, and the main lobe deceptive interference is suppressed. In this embodiment, the main lobe deceptive Interference, that is, the jammer intercepts the radar transmission waveform and forwards it after modulation and a period of delay to form Q deceptive false targets. Among them, the real target and the false target have the same angle, but the false target and the real target have the same angle. located at different transmit pulses. Assuming that the rough estimate of the angle and distance information of the real target is known in the radar search phase (that is, the number of pulse delays of the real target); ...

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Abstract

The invention relates to an element-pulse-coding (EPC) multi-input-multi-output (MIMO) radar deception jamming suppression method, which comprises the steps of designing a coding coefficient and a compensation vector to ensure that a false target is just positioned at a zero point of a directional diagram and is effectively suppressed, so that suppression of main lobe deception jamming is realized. According to the method, a false target is delayed by a plurality of pulses compared with a real target, so that the true target and the false target are located in different distance fuzzy intervals, each transmitted waveform is separated through transmitting end steering vector pre-compensation and receiving end matched filtering, and the EPC-MIMO radar can distinguish echo signals from different distance fuzzy intervals, and finally, true and false targets are identified in transmitting and receiving space frequencies and a pulse three-dimensional domain, and main lobe deception jamming is suppressed through beam zeroing, so that the performance of the radar in electronic warfare is improved.

Description

technical field [0001] The invention belongs to the technical field of radar, in particular to an array element-pulse coding MIMO radar deceptive interference suppression method. Background technique [0002] Array antennas are widely used in radio systems such as communications, radar, sonar, and navigation. However, array radars face increasingly complex space electromagnetic environments and are easily affected by strong interference and strong clutter, which severely limits the information acquisition capabilities of radar systems. . Among them, deceptive interference radiates electromagnetic waves similar to the echoes of real targets, inducing radars to mistakenly regard false targets as real targets, resulting in the loss of real radar targets, occupation of radar resources, and abnormal air conditions, etc., leading to a sharp deterioration in radar system performance . With the development of digital radio frequency memory technology, the patterns of deceptive jam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36G01S7/42
CPCG01S7/36G01S7/42Y02D30/70
Inventor 兰岚廖金玲廖桂生许京伟张玉洪赵英海
Owner XIDIAN UNIV
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