Space-Time Adaptive Processing (STAP) is effective to suppress wideband jammers in satellite navigation system. But in high-dynamic environment, the conventional STAP anti-jamming algorithms are invalid since jammers may easily move out of the array pattern null so that it can not be suppressed. In this paper, a new method of STAP null-widen is deduced based on Laplace distribution model of the changing interference DOA in high-dynamic environment. This method can broaden the width of nulls. But because of using of STAP, the amount of computation is increased significantly, a STAP null-widen method based on reduced-dimension Multistage Wiener Filters (MWF) is given in this paper. The effectiveness of the new method is proved in simulation part.
SKLAR J R. Interference mitigation approaches for the global positioning system[J]. Lincoln Laboratory Journal, 2003, 14(2): 167-179.
[2]
KIM T H, SIN C S, and LEE S. Analysis of performance of GPS L1 signal generator in GPS L1 signal[C]. 2014 14th International Conference on Control, Automation and Systems (ICCAS), Seoul, Korea, 2014: 1006-1009.
MO Hu, WU Dewei, LU Hu, et al. Analysis of a new wideband blanket jamming type to GPS receiver[J]. Journal of Electronics & Information Technology, 2014, 36(12): 2929-2934. doi :10.3724/SP.J.1146.2014.00123.
WANG Wenyi, DU Qingrong, and WU Renbiao. High dynamic interference suppression based on few snapshots for satellite navigation system[J]. Journal of Electronics & Information Technology, 2014, 36(10): 2445-2449. doi:10. 3724/SP.J.1146.2013.01719.
[5]
BOURS A, CETIN E, and DEMPSTER A G. Enhanced GPS interference detection and localization[J]. Electronics Letters, 2014, 50(19): 1391-1393.
ZHANG Baihua, MA Hongguang, SUN Xinli, et al. Space time adaptive processing technique based on orthogonal constraint in navigation receiver[J]. Journal of Electronics & Information Technology, 2015, 37(4): 900-906. doi: 10.11999/ JEIT140740.
[7]
ZATMAN M. Production of adaptive array troughs by dispersion synthesis[J]. Electroncs Letters, 1995, 31(25): 2141-2142.
[8]
MAILLOUX R J. Covariance matrix augmentation to produce adaptive array pattern troughs[J]. Electroncs Letters, 1995, 31(10): 771-772.
WU Sijun, ZHANG Jingzhong, and ZHANG Shu. Robust adaptive beamforming against pointing error[J]. Journal of Harbin Engineering University, 2005, 26(4): 531-535.
[11]
MA Yanxin, LU Dan, WANG Wenyi, et al. A high-dynamic null-widen GPS anti-jamming algorithm based on statistical model of the changing interference DOA[C]. Proceedings of 2014 China Satellite Navigation Conference, Nanjing, China, 2014: 695-702.
DING qianjun, WANG Yongliang, and ZHANG Yongshun. Efficient algorithms of implementing multistage wiener filter in adaptive array[J]. Journal of Electronics & Information Technology, 2006, 28(5): 936-940.
[13]
RICK D C and GOLDSTEIN J S. Efficient architectures for implementing adaptive algorithms[C]. Proceedings of the 2000 Antenna Application Symposium, Monticello, USA, 2000: 29-41.
[14]
COMPTON R T Jr. The power-inversion adaptive array: concept and performance[J]. IEEE Transactions on Aerospace and Electronic Systems, 1979, 15(6): 803-814.
[15]
HINEDI S and STATMAN J I. High-dynamic GPS tracking final report[R], JPL, 1988.