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A smart interference suppression method and system for main lobe of airborne multiple-input multiple-output radar

A multi-output, multi-input technology, applied in the field of radar, can solve problems such as false targets, no system degrees of freedom to distinguish target signals, etc., and achieve the effect of reducing the amount of calculation

Inactive Publication Date: 2018-08-03
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The fundamental reason why traditional phased array radars are difficult to suppress smart jamming in the main lobe is that there is no effective system degree of freedom to distinguish target signals from false targets

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  • A smart interference suppression method and system for main lobe of airborne multiple-input multiple-output radar
  • A smart interference suppression method and system for main lobe of airborne multiple-input multiple-output radar
  • A smart interference suppression method and system for main lobe of airborne multiple-input multiple-output radar

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055] refer to figure 1 , an embodiment of the present invention provides an airborne multiple-input multiple-output radar main lobe smart interference suppression method, the method comprising:

[0056] Step 100, constructing a subspace of clutter signals on the transmitting-receiving plane, including clutter signals and target signals in the subspace of clutter signals, using subspace projection technology to transform the clutter signals in the subspace of...

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Abstract

The invention discloses an airborne multi-input-multi-output radar main lobe smart interference inhibition method and system. Smart interference is analyzed into a suppressive component and a cheating component, the cheating component of the smart interference is inhibited based on a space projection technology, effective detection of a target is realized in an angle-speed-distance three-dimensional parameter space, and the advantages of an OFDM waveform and an MIMO radar are simultaneously combined, so that the calculation amount of IMMO radar signal processing and the needed training samples are effectively reduced, and a theoretical basis is provided for further research and engineering application of an airborne MIMO radar multi-dimensional signal processing technology.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to an airborne multiple-input multiple-output radar main lobe smart interference suppression method and system. Background technique [0002] Smart jamming is a type of electronic jamming, specifically a kind of noise jamming modulated in a special way. Its effect on the jammed radar is between deception and suppression, rather than simple cover or shielding. [0003] The smart jamming technology based on digital radio frequency memory (DRFM) can record and save the current working waveform of the radar for a long time, more accurately and completely under certain conditions, and copy and reproduce the saved radar waveform when jamming is needed, and according to The jamming task needs to adaptively change the style and parameters of the jamming signal, apply various complex modulations to deceive and cover the jamming, and implement optimal jamming to the radar in the multi-dimensio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 宫健楼顺天郭艺夺张永顺
Owner XIDIAN UNIV