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Sensors 2017, 17(11), 2480; https://doi.org/10.3390/s17112480

An Adaptive Transmitting Scheme for Interrupted Sampling Repeater Jamming Suppression

1,2
,
1,2,* and 1,2
1
Radar Research Laboratory, School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China
2
Key Laboratory of Electronic and Information Technology in Satellite Navigation (Beijing Institute of Technology), Ministry of Education, Beijing 100081, China
*
Author to whom correspondence should be addressed.
Received: 12 August 2017 / Revised: 11 October 2017 / Accepted: 23 October 2017 / Published: 29 October 2017
(This article belongs to the Section Remote Sensors)
Full-Text   |   PDF [5176 KB, uploaded 29 October 2017]   |  

Abstract

The interrupted sampling repeater jamming (ISRJ) based on a digital radio frequency memory (DRFM) device is a new type of coherent jamming. This kind of jamming usually occurs as main-lobe jamming and has the advantages of low power requirements and easy parameter adjustment, posing a serious threat to the modern radar systems. In order to suppress the ISRJ, this paper proposes an adaptive transmitting scheme based on a phase-coded signal. The scheme firstly performs jamming perception to estimate the jamming parameters, then, on this basis, optimizes the waveform with genetic algorithm. With the optimized waveform, the jamming signal is orthogonal to the target echo, thus it can be easily suppressed with pulse compression. Simulation experiments are performed to verify the effectiveness of the scheme and the results suggest that the peak-to-side-lobe ratio (PSR) and integrated side-lobe level (ISL) of the pulse compression can be improved by about 16 dB and 15 dB, respectively, for the case where the jamming-to-signal ratio (JSR) is 13 dB. View Full-Text
Keywords: interrupted sampling repeater jamming; digital radio frequency memory; radar waveform design; jamming perception; adaptive transmitting interrupted sampling repeater jamming; digital radio frequency memory; radar waveform design; jamming perception; adaptive transmitting
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Zhou, C.; Liu, F.; Liu, Q. An Adaptive Transmitting Scheme for Interrupted Sampling Repeater Jamming Suppression. Sensors 2017, 17, 2480.

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