基于相位编码波形捷变和CFAR技术的抗同频干扰

doi:10.12305/j.issn.1001-506X.2022.04.18

Abstract

Abstract:

Co-channel interference has the characteristics of suppressing interference and deceiving interference, which is an interference difficult to resist. Waveform design is a new way to resist co-channel interference. This paper analyzes and summarizes the mechanism and signal characteristics of the same frequency interference, and studies the characteristics of the output signal after the two-stage phase encoding variable waveform pulse compressing mismatch. On this base, a method of using phase encoding variable waveform combined with constant false-alarm rate (CFAR) to resist the co-channel interference is proposed. By setting the phase encoding waveform and matching compression filter reasonably, the interference is in a state of mismatch, and then the interference is filtered through the CFAR. The simulation results show that the two-stage phase encoding has a reasonable setting of waveform and cooperating with CFAR detection processing, which can effectively extract the useful target echo signal from the interference, and is excellent in applicability to strong co-channel interference.

Key words: co-channel interference, phase encode, constant false-alarm rate (CFAR), wave form design

CLC Number:

TN973

Dong XIA, Kaixuan ZHANG, Youbao DING, Baopeng LI. Co-channel interference resistance based on agile wave form of phase encode and CFAR technology[J]. Systems Engineering and Electronics, 2022, 44(4): 1210-1219.

Figures/Tables 14

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References 33

1	雷正伟, 王晓莉, 冀鑫炜. 现代雷达系统抗干扰设计需求分析[J]. 现代雷达, 2020, 42 (2): 85- 90.
	LEI Z W , WANG X L , JI X W . Analysis on demand of anti-jamming design for modern radar system[J]. Modern Radar, 2020, 42 (2): 85- 90.
2	傅有光, 王宁, 孟晋丽. 复杂电磁环境下的雷达反干扰技术[J]. 现代雷达, 2019, 41 (12): 1- 7.
	FU Y G , WANG N , MENG J L . Radar ECCM technology in the complex electromagnetic environment[J]. Modern Radar, 2019, 41 (12): 1- 7.
3	邓文林. 复杂电磁环境下的雷达抗干扰技术[J]. 电子技术与软件工程, 2020, (5): 70- 71.
	DENG W L . Radar ECCM Technology in the complex electromagnetic environment[J]. Electronic Technology & Software Engineering, 2020, (5): 70- 71.
4	刘冬利, 付建国, 索继东. 时域多脉冲相关法抗雷达同频干扰[J]. 现代雷达, 2009, 31 (16): 12- 14.
	LIU D L , FU J G , SUO J D . A study on correlation algorithm during multi-pulse in time domain to eliminate radar identical frequency jamming[J]. Modern Radar, 2009, 31 (16): 12- 14.
5	黄旭东, 姬新阳, 江良剑, 等. 雷达同频干扰机理及抗干扰措施研究[J]. 现代电子技术, 2015, 38 (7): 16- 18. doi: 10.3969/j.issn.1004-373X.2015.07.004
	HUANG X D , JI X Y , JIANG L J , et al. Study on radar shared-frequency interference generation mechanism and anti-jamming measure[J]. Modern Electronics Technique, 2015, 38 (7): 16- 18. doi: 10.3969/j.issn.1004-373X.2015.07.004
6	闫冯军, 汪永军. 一种基于时域信号处理的同频干扰抑制方法[J]. 雷达与对抗, 2015, 35 (4): 21- 28.
	YAN F J , WANG Y J . A shared frequency interference suppression method based on time-domain signal processing techno-logy[J]. Radar & ECM, 2015, 35 (4): 21- 28.
7	SARTO M S , D ALOIA A G , TAMBURRANO A , et al. Synthesis, modeling, and experimental characterization of graphite nanoplatelet-based composites for EMC applications[J]. IEEE Trans. on Electro-magnetic Compatibility, 2012, 54 (l): 17- 27.
8	SHNIDMAN D A , SHNIDMAN N R . Sidelobe blanking with expanded models[J]. IEEE Trans. on Aerospace and Electronic Systems, 2011, 47 (2): 790- 805. doi: 10.1109/TAES.2011.5751226
9	BLUNT S D , MOKOLE E L . Overview of radar waveform diversity[J]. IEEE Aerospace and Electronic Systems Magazine, 2016, 31 (11): 2- 42. doi: 10.1109/MAES.2016.160071
10	LIN K. Anti-jamming MTI radar using variable phase-codes[D]. Massachusetts: Massachusetts Institute of Technology, 2002.
11	SOUMEKH M . SAR-ECCM using phase-perturbed LFM chirp signals and DRFM repeat jammer penalization[J]. IEEE Trans. on Aerospace and Electronic Systems, 2006, 42 (1): 191- 205. doi: 10.1109/TAES.2006.1603414
12	AKHTAR J. An ECCM Scheme for orthogonal independent range-focusing of real and false targets[C]//Proc. of the Radar Conference, 2007.
13	AKHTAR J . Orthogonal block coded ECCM schemes against repeat radar jammers[J]. IEEE Trans. on Aerospace and Electtronic Systems, 2009, 45 (3): 1218- 1226. doi: 10.1109/TAES.2009.5259195
14	AXELSSON S R J . Analysis of random step frequency radar and comparison with experiments[J]. IEEE Trans. on Geoscience and Remote Sensing, 2007, 45 (4): 890- 904. doi: 10.1109/TGRS.2006.888865
15	WANG D H, BAO Q L, NIU Z D, et al. Long time coherent integration method for frequency agile radar[C]//Proc. of the IEEE European Radar Conference, 2014.
16	ABDALLA A , WANG W Q , YUAN Z , et al. Subarray-based FDA radar to counteract deceptive ECM signals[J]. EURASIP Journal on Advances in Signal Processing, 2016, 2016 (l): 104.
17	MICHAL M. Waveform design for fast clutter cancellation in noise radars[C]//Proc. of the IEEE European Radar Confe-rence, 2014.
18	LIU H W , WANG X , JIU B , et al. Wideband MIMO radar waveform design for multiple target imaging[J]. IEEE Sensors Journal, 2016, 16 (23): 8545- 8556.
19	刘振. 基于压缩感知的随机调制雷达信号处理方法与应用研究[D]. 长沙: 国防科学技术大学, 2013.
	LIU Z. Methods and applications of random modulated radar signal processing based on compressed sensing[D]. Changsha: National University of Defense Technology, 2013.
20	胡亮兵. 基于凸优化的最优失配滤波器设计方法[J]. 中国电子科学研究院学报, 2015, 10 (2): 209- 212.
	HU L B . Optimal peak side-lobe level mismatched filter design method via convex optimization[J]. Journal of CAEIT, 2015, 10 (2): 209- 212.
21	胡亮兵. MIMO雷达波形设计[D]. 西安: 西安电子科技大学, 2010.
	HU L B. Waveform design for MIMO radar[D]. Xi'an: Xidian University, 2010.
22	胡亮兵, 刘宏伟, 吴顺君. 基于约束非线性规划的MIMO雷达正交波形设计[J]. 系统工程与电子技术, 2011, 33 (l): 64- 68.
	HU L B , LIU H W , WU S J . Orthogonal waveform design for MIMO radar via constrained nonlinear programming[J]. Systems Engineering and Electronics, 2011, 33 (l): 64- 68.
23	殷华. 低截获概率雷达抗同频干扰方法研究[D]. 无锡: 江南大学, 2010.
	YIN H. Research on the method of resisting co-channel interference with LPI radar[D]. Wuxi: Jiangnan University, 2010.
24	袁建军, 赵玉丽. 同频干扰产生机理及特征分析[J]. 计算机与数字工程, 2015, 43 (5): 812- 816.
	YUAN J J , ZHAO Y L . Mechanism and characteristics of co-channel interference[J]. Computer & Digital Engineering, 2015, 43 (5): 812- 816.
25	RICHARDSM A. 雷达信号处理基础[M]. 北京: 电子工业出版社, 2008.
	RICHARDS M A . Radar signal processing basics[M]. Beijing: Electronic Industry Press, 2008.
26	郇浩, 陶然, 李元硕, 等. 基于变换域和时域联合处理的雷达同频干扰抑制方法[J]. 电子与信息学报, 2012, 34 (12): 2978- 2984.
	HUAN H , TAO R , LI Y S , et al. Co-channel Interference suppression for homo-type radars based on joint transform domain and time domain[J]. Journal of Electronics & Information Technology, 2012, 34 (12): 2978- 2984.
27	柳向, 李东生, 胡瑞. 基于有序统计类恒虚警检测的脉冲压缩雷达移频特征消隐多载波干扰研究[J]. 兵工学报, 2017, 38 (11): 2134- 2142.
	LIU X , LI D S , HU R . Research on blanking shift-frequency-multi-carrier jamming against pulse-compression radar based on OS-CFAR[J]. Acta Armamentarii, 2017, 38 (11): 2134- 2142.
28	MOHAMMADPOOR M, RAJA A R S A, ISMAIL A, et al. A linear frequency modulated bistatic radar for on the ground object detection[C]//Proc. of the IEEE Chinese Institute of Electronics International Conference on Radar, 2011: 63-66.
29	郑光勇, 刘国柱, 王福志. 在恒虚警检测下的多假目标干扰效果分析[J]. 强激光与粒子束, 2015, 27 (10): 235- 249.
	ZHENG G Y , LIU G Z , WANG F Z . Analysis of jamming effect of multiple false targets under CFAR[J]. High Power Laser and Particle Beams, 2015, 27 (10): 235- 249.
30	WANG W J , WANG R Y , JIANG R K , et al. Modified reference window for two-dimensional CFAR in radar target detection[J]. The Journal of Engineering, 2019, 2019 (21): 7924- 7927.
31	LIN C H, LIN Y C, BAI Y, et al. DL-CFAR: a novel CFAR target detection method based on deep learning[C]//Proc. of the IEEE 90th Vehicular Technology Conference, 2019: 1-6.
32	何友, 关键, 孟祥伟. 雷达自动检测和CFAR处理方法综述[J]. 系统工程与电子技术, 2001, 23 (1): 11- 15.
	HE Y , GUAN J , MENG X W . Survey of automatic radar detection and CFAR processing[J]. Systems Engineering and Electronics, 2001, 23 (1): 11- 15.
33	李昭, 李家强, 王海彬, 等. 基于波形对比度最优的扩展目标恒虚警检测[J]. 电讯技术, 2018, 58 (1): 72- 77.
	LI Z , LI J Q , WANG H B , et al. CFAR detection of moving range-spread target based on waveform contrast optimization[J]. Telecommunication Engineering, 2018, 58 (1): 72- 77.

位长	码组序列
2	++(1、1) 或+-(1、-1)
3	++-(1、1、-1)
4	+++-(1、1、1、-1) 或++-+(1、1、-1、1)
5	+++-+(1、1、1、-1、1)
7	+++--+-(1、1、1、-1、-1、1、-1)
11	+++---+--+-(1、1、1、-1、-1、-1、1、-1、-1、1、-1)
13	+++++--++-+-+(1、1、1、1、1、-1、-1、1、1、-1、1、-1、1)

[1]	LU Zhizhong, ZHOU Ying, HUANG Yu. Research on correlation in spatial domain to eliminate the co-channel interference of the X-band marine radar [J]. Systems Engineering and Electronics, 2017, 39(4): 758-767.
[2]	LU Yun-long, LI Ming, CHEN Hong-meng, ZUO Lei, ZHANG Peng. CFAR detection of DRFM deception jamming based on entropy feature [J]. Systems Engineering and Electronics, 2016, 38(4): 732-738.
[3]	ZHANG Zu-fan, LI Yu, YANG Jing, JING Xiao-rong. Co-channel interference suppression algorithm combining triangular decomposition and SLNR [J]. Systems Engineering and Electronics, 2014, 36(1): 167-172.

Co-channel interference resistance based on agile wave form of phase encode and CFAR technology

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