Active camouflage protection method and device based on multiple phase sectionalized modulation radar interference

A technology of radar jamming and phase modulation, which is applied in measuring devices, radio wave reflection/re-radiation, utilization of re-radiation, etc. It can solve problems such as unusable maneuvering targets, limited coverage area, complicated installation and withdrawal process, etc.

Active Publication Date: 2017-05-10
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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AI Technical Summary

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

Method used

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  • Active camouflage protection method and device based on multiple phase sectionalized modulation radar interference
  • Active camouflage protection method and device based on multiple phase sectionalized modulation radar interference
  • Active camouflage protection method and device based on multiple phase sectionalized modulation radar interference

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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 multiple phase sectionalized modulation radar interference. According to the invention, image blocks with the number, the position, the area and the brightness being controllable are generated on a synthetic aperture radar image to cover a target image and peripheral background image through controlling characteristics of an interference signal so as to achieve a camouflage purpose. The method disclosed by the invention is processing performed on two dimensions; received signals are uniformly-spaced pulse signals; when the maximum length of subsection signals is less than the pulse width of the received signals, the subsection is a short subsection which is interference for the distance dimension; and when the minimum length of the subsection signals is greater than a pulse repetition period of the received signals, the subsection is a long subsection which is interference for the Doppler dimension. The active camouflage protection device comprises a controller and a digital radio frequency memory DRFM, wherein the controller and the digital radio frequency memory DRFM are connected in series, and the controller controls a sectionalizing mode and a modulation phase value of radar signals; and the DRFM acquires one-dimensional interference signals and two-dimensional interference signals according to the sectionalizing mode and the modulation phase value.

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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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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