ECCM performance analysis of chaotic coded orthogonal frequency division multiplexing (COFDM) SAR

Xiangzhi Feng; Xiaojian Xu

doi:10.1117/12.883637

21 June 2011 ECCM performance analysis of chaotic coded orthogonal frequency division multiplexing (COFDM) SAR

Xiangzhi Feng, Xiaojian Xu

Proceedings Volume 8021, Radar Sensor Technology XV; 80211K (2011) https://doi.org/10.1117/12.883637
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

Conventional linear frequency modulation (LFM) synthetic aperture radar (SAR) is incapable of countering deceptive repeat jamming. In this paper, a new SAR signal based on chaotic coded orthogonal frequency division multiplexing (COFDM) is studied. The fact that chaotic codes are sensitive to the initial values allows generating a large number of different chaotic sequences to form SAR transmitting waveforms, where all the signal sequences are orthogonal to each other, enabling COFDM-SAR countering not only active noise but also deceptive repeat jamming. The procedures for COFDM waveform generation and SAR anti-jamming processing are discussed. Comparative studies of the electronic counter-countermeasure performance (ECCM) between COFDM-SAR and conventional LFM-SAR are made. Simulation results are presented to demonstrate the superior performance of COFDM-SAR in countering repeat deception as well as active noise jamming.

Citation Download Citation

Xiangzhi Feng and Xiaojian Xu "ECCM performance analysis of chaotic coded orthogonal frequency division multiplexing (COFDM) SAR", Proc. SPIE 8021, Radar Sensor Technology XV, 80211K (21 June 2011); https://doi.org/10.1117/12.883637

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