A SAR scene deceptive jamming method based on range convolution and azimuth multiplication modulation

被引：0

作者：

Ji P. ^{[1
]}

Xing S. ^{[1
]}

Dai D. ^{[1
]}

Pang B. ^{[1
]}

Feng D. ^{[1
]}

机构：

[1] College of Electronic Science, National University of Defense Technology, Changsha

来源：

Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2023年 / 44卷 / 18期

关键词：

convolution modulation; deceptive template; multiplication modulation; scene deceptive jamming; words： synthetic aperture radar (SAR);

D O I：

10.7527/S1000-6893.2022.28235

中图分类号：

学科分类号：

摘要：

To reduce the real-time computational amount and requirement for reconnaissance parameters and maintain the fidelity of false scenes in Synthetic Aperture Radar（SAR）scene deceptive jamming，this paper first proposes a fast implementation method of SAR azimuth multiplication modulation jamming. Through a reasonable approximation of the slant distance from the SAR sensor to the target point，SAR azimuth multiplication modulation jamming is able to be used in combination with SAR range convolution modulation jamming for jamming SAR. On this basis，a SAR scene deceptive jamming method is proposed based on range convolution and azimuth multiplication modulation. Based on the two-dimensional Fourier transform of the spoofing template，this method constructs a series of slow-time frequency domain response functions before jamming，and then obtains the jamming modulated signal by real-time resampling in the azimuth direction，which can significantly reduce the computational effort and the demand for reconnaissance parameters，and at the same time maintain the fidelity of the false target. The method is also able to jam the complex waveform SAR due to the use of convolutional modulation in the range direction. Theoretical analysis and simulation experiments verify the effectiveness of the proposed method. © 2023 AAAS Press of Chinese Society of Aeronautics and Astronautics. All rights reserved.

引用

共 26 条

[1] WONG F H., Digital processing of synthetic aperture radar data：algorithms and implementation［M］, (2009)
[2] GOJ W W., Synthetic-aperture radar and electronic warfare［M］, (1989)
[3] RICHARDS J A., The imaging radar system, Remote Sensing with Imaging Radar, pp. 1-10, (2009)
[4] LI Y Z, HUANG D T, XING S Q, Et al., A review of synthetic aperture radar jamming technique［J］, Journal of Radars, 9, 5, pp. 753-764, (2020)
[5] HUANG D T, XING S Q, LIU Y M，, Et al., Fake SAR signal generation method based on noise convolution modulation［J］, Journal of Radars, 9, 5, pp. 898-907, (2020)
[6] ZHANG S X，, Et al., Study of noise jamming based on convolution modulation to SAR［C］, 2010 International Conference on Computer，Mechatronics， Control and Electronic Engineering, pp. 169-172, (2010)
[7] ZHANG H R，, TANG Y S，, Et al., Research on deceptive jamming technologies against SAR［C］, 2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar, pp. 521-525, (2010)
[8] WANG S L，, YU L, Et al., A study on the active deception jamming to SAR［J］, Acta Electronica Sinica, 31, 12, pp. 1900-1902, (2003)
[9] SUN G C，, ZHOU F，, XING M D，, Et al., Deception-jamming technology against the SAR based on the deceptive scene and real-time analyses［J］, Journal of Xidian University, 36, 5, pp. 813-818, (2009)
[10] ZHOU F, Et al., A large scene deceptive jamming method for space-borne SAR［J］, IEEE Transactions on Geoscience and Remote Sensing, 51, 8, pp. 4486-4495, (2013)

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