Clutter Cancellation for Airborne Passive Radar Based on RDNLMS
YANG Pengcheng①②③ LÜ Xiaode①② LIU Yu①②③ CHAI Zhihai①②③ ZHANG Dan①②③
①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(National Key Laboratory of Science and Technology on Microwave Imaging, Beijing 100190, China) ③(University of Chinese Academy of Sciences, Beijing 100049, China)
RDNLMS algorithm is used to cancel Doppler-spreading direct signal and strong echo of airborne passive radar. The transfer function of RDNLMS filter is deduced, based on which a method of non-uniform Doppler extraction is developed to decrease the computing load while minimizing performance loss. With this method, the Doppler of strong echo will be surely extracted hence strong echo will be cancelled efficiently. In addition, the interval of extracted Doppler will not be too large to offer proper suppression for weak echo. Simulations show that when the order of RDNLMS filter is fixed, the performance of non-uniform Doppler extraction will be 2.4 dB better than the uniform one.
GRIFFITHS H and BAKER C. Passive coherent location radar systems. Part 1: Performance prediction[C]. IEE Proceedings-Radar, Sonar and Navigation, 2005, 152(3): 153-159.
WAN Xianrong. An overview on development of passive radar based on the low frequency band digital broadcasting and TV signals[J]. Journal of Radars, 2012, 1(2): 109-123.
[3]
DAWIDOWICZ B, KULPA K S, and MALANOWSKI M. Suppression of the ground clutter in airborne PCL radar using DPCA technique[C]. Proceedings of the 6th European Radar Conference, Rome, Italy, 2009: 306-309.
[4]
BROWN J, WOODBRIDGE K, STOVE A, et al. Air target detection using airborne passive bistatic radar [J]. Electronics Letters, 2010, 46(20): 1396-1397.
[5]
TAN D K P, LESTURGIE M, SUN H, et al. Target detection performance analysis for airborne passive bistatic radar[C]. IEEE International Proceedings of the Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, USA, 2010: 3553-3556.
[6]
KULPA K, MALANOWSKI M, SAMCZYNSKI P, et al. The concept of airborne passive radar[C]. Microwaves, Radar and Remote Sensing Symposium (MRRS), Kiev, Ukraine, 2011: 267-270.
[7]
KULPA K, MALANOWSKI M, SAMCZYNSKI P, et al. On-board PCL systems for airborne platform protection[C]. Tyrrhenian International Workshop on Digital Communications-Enhanced Surveillance of Aircraft and Vehicles (TIWDC/ESAV), Capri, Italy, 2011: 119-122.
[8]
BROWN J, WOODBRIDGE K, GRIFFITHS H, et al. Passive bistatic radar experiments from an airborne platform [J]. IEEE Aerospace and Electronic Systems Magazine, 2012, 27(11): 50-55.
[9]
DAWIDOWICZ B, KULPA K S, MALANOWSKI M, et al. DPCA detection of moving targets in airborne passive radar[J]. IEEE Transactions on Aerospace and Electronic Systems, 2012, 48(2): 1347-1357.
[10]
DAWIDOWICZ B, SAMCZYNSKI P, MALANOWSKI M, et al. Detection of moving targets with multichannel airborne passive radar[J]. IEEE Aerospace and Electronic Systems Magazine, 2012, 27(11): 42-49.
[11]
TAN D K P, LESTURGIE M, SUN H, et al. Space-time interference analysis and suppression for airborne passive radar using transmissions of opportunity[J]. IET Radar, Sonar & Navigation, 2014, 8(2): 142-152.
WAN Xianrong, LIANG Long, DAN Yangpeng, et al. Experimental research of passive radar on moving platform[J]. Chinese Journal of Radio Science, 2015, 30(2): 383-390.
[13]
LU Xiaode, LI Jichuan, LIN Kuan, et al. Range-Doppler NLMS (RDNLMS) algorithm for cancellation of strong moving targets in passive coherent location (PCL) radar[C]. IEEE Proceedings of the Radar Conference, Lille, France, 2014: 1-5.
ZHAO Yaodong, LU Xiaode, LI Jichuan, et al. Detection of moving targets based on Doppler spectrum analysis technique for passive coherent radar[J]. Journal of Radars, 2013, 2(2): 247-256.
[15]
ZHAO Y D, ZHAO Y K, LU X D, et al. Block NLMS cancellation algorithm and its real-time implementation for passive radar[C]. IET International Radar Conference, Xi’an, China, 2013: 1-5.