Abstract
Traditional synthetic aperture radar (SAR) deceptive jamming can effectively generate deceptive scenes or false targets in SAR images. However, these false targets or scenes can be easily distinguished or eliminated by the multichannel SAR system. To interfere with the multichannel SAR, we first analyzed the results of SAR deceptive jamming generated by one transponder and two transponders against three-channel SAR- ground moving target indication (GMTI). Then, we propose a new deceptive jamming method against three-channel SAR-GMTI by using three synergetic transponders. By modulating each transponder with a complex coefficient, three synergetic transponders can generate false moving targets with the controllable radial velocity and located azimuth position in three-channel SAR-GMTI. Besides, in this paper, we also introduce an algorithm to deploy three transponders reasonably by utilizing the minimum condition number. In the end, a general architecture of multiple transponders deceiving multichannel SAR is given. The proposed method can not only generate deceptive false targets against multichannel SAR-GMTI, but also guide the production of a deceptive digital elevation model (DEM) against multichannel interferometric SAR (InSAR). Simulations verify the effectiveness of the proposed method.
Highlights
Synthetic aperture radar (SAR) is a microwave imaging radar, offering high-resolution images sustainably, regardless of the time and the weather [1]
To verify the effectiveness of the proposed method, simulations are provided based on a three-channel SAR-ground moving target indication (GMTI) system
The corresponding complex modulation coefficients modulated in them are denoted as Q1, Q2, and Q3
Summary
Synthetic aperture radar (SAR) is a microwave imaging radar, offering high-resolution images sustainably, regardless of the time and the weather [1]. In [28,29], a new method utilizing two synergetic transponders against dual-channel SAR-GMTI was proposed, which could generate false moving targets with high fidelity. These methods are effective in jamming dual-channel SAR, but unable to work in jamming multichannel SAR. Inspired by the idea that two synergetic transponders can generate effective deceptive jamming against a dual-channel SAR system, we propose a new deceptive jamming method based on multiple transponders against multichannel SAR system.
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