An Efficient Sar Jammer With Direct Radio Frequency Processing (Drfp)

Abstract

Abstract-DRFM (Digital Radio Frequency Memory) is now widely utilized by modern radar jammers due to its high efficiency in jamming generation. However, its jammer structure is somewhat complex, since the up-conversion and down-conversion processes must be included. This paper proposes a new Synthetic Aperture Radar (SAR) jammer architecture utilizing Direct Radio Frequency Processing (DRFP), wherein both the up-conversion and down-conversion modules can be excluded. DRFP has a very compact hardware structure which employs Direct Digital Synthesizer (DDS), phase shifter, and delay lines for jamming modulation. Finally, the performances of DRFP are shown by both the inner-field test and a rail-way SAR experiment to be rather effective in jamming generation.

A frequency‐domain three‐stage algorithm for active deception jamming against synthetic aperture radar

“…Many papers in the literature deal with the ADJAM against SAR and address problems such as feasibility assessment, jammer's theoretical model, implementation scheme, jamming performance evaluation etc. [10–17]. In [11], the modulation process of a repeat jammer is theoretically modeled as a convolution between the intercepted signal and the unit impulse response (UIR) of the jammer system.…”

A New Hybrid Method for Synthetic Aperture Radar Deceptive Jamming

“…It is mentioned in the paper that recently, several schemes were provided to achieve effective deceptive jamming of point targets in a short time; however, they are not applicable to the distributed targets [11]. In [12], a fast deceptive jamming method by retransmitting SAR echoes was proposed, but it is only applicable for small scene. The main issue concerned with this kind of jamming method is the complexity of the raw data simulation algorithm.…”

Improved synthetic aperture radar micro‐Doppler jamming method based on phase‐switched screen

“…SAR is capable of generating high‐resolution terrain images in all‐time and all‐weather conditions, and thus will provide a powerful tool for military and civil remote‐sensing applications such as target recognition and classification. Hence, research on SAR jamming and anti‐jamming has received intensive attention [3–12].…”