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Active camouflage protection method and device based on multi-phase segment modulation radar jamming

A radar jamming and phase modulation technology, applied in measurement devices, radio wave reflection/re-radiation, instruments, etc., can solve problems such as inability to use maneuvering targets, limited coverage area, and complicated installation and removal processes

Active Publication Date: 2019-02-22
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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Problems solved by technology

At present, the main "external" concealment and camouflage methods use passive equipment. The main defects of this type of equipment are that the installation and withdrawal process is complicated, the coverage area is limited, and generally cannot be used for maneuvering targets

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  • Active camouflage protection method and device based on multi-phase segment modulation radar jamming
  • Active camouflage protection method and device based on multi-phase segment modulation radar jamming
  • Active camouflage protection method and device based on multi-phase segment modulation radar jamming

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Embodiment Construction

[0032] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0033] The present invention provides an active camouflage protection method and device based on multi-phase segmental modulation radar interference. The active camouflage protection method based on multi-phase segmental modulation radar interference includes the following steps:

[0034] Step 1, segmenting the received radar signal by time to obtain each segmented signal, the maximum length of the segmented signal is shorter than a pulse width of the radar signal, wherein the number of segments is not less than 2; for each segment The signals are phase-modulated separately to obtain phase-modulated segmented signals, where the modulated phase value takes an arbitrary value within [0,2π], and at least two of the modulated phase values ​​of all segmented signals are different; all modulated The subsequent segmented signals are integrated into a full-segment...

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Abstract

The invention discloses an active camouflage protection method and device based on multi-phase segment modulation radar interference. By controlling the characteristics of the interference signal, image blocks with controllable quantity, position, area, and brightness are generated in the synthetic aperture radar image to cover the target and surrounding background images to achieve the purpose of camouflage. The method of the present invention is the processing that two-dimensional is done, and the received signal is an equal interval pulse signal, and the maximum length of the segmented signal is shorter than a pulse width of the received signal as a short segment, which is the interference to the distance dimension, and the segmented signal When the minimum length of is longer than one pulse repetition period of the received signal, it is a long segment, which is the interference to the Doppler dimension. The device in the present invention includes a controller and a digital radio frequency memory DRFM, the controller is connected in series with the digital radio frequency memory DRFM, and the controller controls the segmentation mode and the modulation phase value of the radar signal; DRFM is obtained according to the segmentation mode and the modulation phase value 1D and 2D interference signals.

Description

technical field [0001] The invention relates to the technical field of target camouflage protection, in particular to an active camouflage protection method and device based on multi-phase segment modulation radar interference. Background technique [0002] Synthetic aperture radar has the ability to image ground targets all-day and all-weather, and realize target recognition through the fine two-dimensional structure information of the target. [0003] Target concealment and camouflage methods are generally divided into two categories: internal and external. The "intrinsic" concealment and camouflage measures are stealth technology. By reducing the exposure characteristics of the target, for the radar band, the shape structure design is mainly used to avoid the mirror reflection and corner reflection effects, and the wave-absorbing material is used to weaken the radar wave scattering. Stealth technology alone reduces the target Exposing features is difficult and costly, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/38
CPCG01S7/38G01S7/021G01S13/90
Inventor 吴彦鸿
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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