A New Method for DOA Estimation for VHF MIMO Radar in Low-angle Tracking Environment
LIU Yuan WANG Hongxian JIU Bo YAN Junkun ZHAO Yongbo LIU Hongwei
(National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China)
(Collaborative Innovation Center of Information Sensing and Understanding at Xidian University, Xi’an 710071, China)
The issue of Direction-Of-Arrival (DOA) estimation in low-angle tracking environment for Very High Frequency (VHF) MIMO radar is investigated in this paper. Under the condition of the reflecting surface height is unknown, an algorithm for the target elevation estimation is proposed. The algorithm is based on the criterion of maximizing the correlation coefficient of target echo and the atoms of a given dictionary, where the dictionary grids can be iteratively refined to estimate the parameters more precisely. The simulation results indicate the effectiveness of the algorithm.
刘源,王洪先,纠博, 严俊坤,赵永波,刘宏伟. 米波MIMO雷达低空目标波达方向估计新方法[J]. 电子与信息学报, 2016, 38(3): 622-628.
LIU Yuan, WANG Hongxian, JIU Bo, YAN Junkun, ZHAO Yongbo, LIU Hongwei. A New Method for DOA Estimation for VHF MIMO Radar in Low-angle Tracking Environment. JEIT, 2016, 38(3): 622-628.
XU Z H, WU J N, XIONG Z Y, et al. Low-angle tracking algorithm using polarization sensitive array for very-high frequency radar[J]. IET Radar Sonar Navigation, 2014, 8(9): 1035-1041.
[2]
PARK D M, YANG E J, AHN S, et al. Adaptive beamforming for low-angle target tracking under multipath interference[J]. IEEE Transactions on Aerospace and Electronic Systems, 2014, 50(4): 2564-2577.
ZHANG Wenjun, ZHAO Yongbo, and ZHANG Shouhong. Altitude measurement of meter-wave radar using the general MUSIC algorithm and its improvement[J]. Journal of Electronics & Information Technology, 2007, 29(2): 387-390.
ZHAO Guanghui, CHEN Baixiao, and DONG Mei. A new DOA estimator based on alternating projection and its application in VHF radar[J]. Journal of Electronics & Information Technology, 2008, 30(1): 224-227.
HU Xiaoqin, CHEN Jianwen, and WANG Yongliang. Research on meter-wave radar height-finding multipath model[J]. Chinese Journal of Radio Science, 2008, 23(4): 651-657.
[6]
SEBT M A, SHEIKHI A, and NAYEBI M M. Robust low-angle estimation by an array radar[J]. IET Radar Sonar Navigation, 2010, 4(6): 780-790.
[7]
WHITE W D. Low-angle radar tracking in the presence of multipath[J]. IEEE Transactions on Aerospace and Electronic Systems, 1974, 11(6): 835-852.
[8]
SHERMAN S M. Complex indicated abgles applied to unresolved radar targets and multipath[J]. IEEE Transactions on Aerospace and Electronic Systems, 1971, 1(7): 160-170.
WU Xiangdong, ZHAO Yongbo, ZHANG Shouhong, et al. New method for DOA estimation for the MIMO radar in low-angle tracking environment[J]. Journal of Xidian University, 2008, 35(5): 793-798.
[10]
HASSANIEN A, VOROBYOV S A, and KHABBAZIBASMENJ A. Transmit radiation pattern invariance in MIMO radar with application to DOA estimation[J]. IEEE Signal Processing Letters, 2015, 22(10): 1609-1613.
LIU Jun, LIU Zheng, XIE Rong, et al. Beam-pace domain angle estimation algorithm in VHF MIMO radar[J]. Acta Electronica Sinica, 2011, 39(9): 1961-1966.
[12]
SHAN T J, WAX M, and KAILATH T. On spatial smoothing for direction-on-arrival estimation of coherent signal[J]. IEEE Transactions on Aerospace and Speech Signal Processing, 1985, 33(4): 806-811.
ZHAO Yongbo and ZHANG Shouhong. Maximum likelihood DOA estimation in radar low-angle tracking environment[J]. Acta Electronica Sinica, 2004, 32(9): 1520-1523.
[14]
QU L, SUN Q, YANG T, et al. Time-delay estimation for ground penetrating radar using ESPRIT with improved spatial smoothing technique[J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(8): 1315-1319.
[15]
SEN S and NEHORAI A. OFDM MIMO radar with mutual- information waveform design for low-grazing angle tracking[J]. IEEE Transactions on Signal Processing, 2010, 58(6): 3152-3162.
[16]
WANG S H, CAO Y H, and SU H T. Joint estimation of the target height and the reflecting surface height in low angle radar[C]. IEEE International Conference on Signal Processing(ICSP), Hangzhou, 2014: 19-23.
[17]
XU D L, DU L, and LIU H W. Radar signal parameter estimation with spares Bayesian representation based on dictionary refinement[C]. IEEE International Conference on Computer and Information Technology(CIT), Xi’an, 2014: 123-128.