FDA MIMO双基雷达主瓣走动矫正距离模糊杂波抑制

doi:10.12305/j.issn.1001-506X.2022.05.08

摘要/Abstract

摘要：

正侧视阵多输入多输出(multiple input multiple output, MIMO)双基地雷达系统在高重频脉冲体制下, 其地面杂波具有严重的距离依赖性和杂波谱展宽问题。同时, 双基地雷达多维杂波结构使其面临难以获得足够的训练样本、自适应权值算法复杂度高的困难。本文提出一种基于发射主瓣矫正的频率分集阵列(frequency diversity array, FDA)-MIMO双基地雷达距离模糊杂波抑制方法。该方法通过接收端等效发射方向图主瓣矫正, 解决了主瓣照射角度走动的问题。通过等效发射方向图主瓣矫正补偿和接收信号后的反补偿处理, 回波存在距离耦合的相位项, 实现了不同距离杂波的有效区分, 解决了杂波距离模糊问题, 完成杂波抑制。同时, 将三维搜索拆分为“2+1”的形式, 先在发射角频率域和多普勒域对杂波进行抑制并进行目标参数搜索, 再根据得到的目标发射角度和多普勒信息构建降维矩阵, 在接收角频率域进行降维搜索, 解决了杂波样本不足及运算量大的问题。该方法最终解决了双基地预警雷达大场景下地面距离杂波的模糊问题, 仿真实验验证了所提方法的有效性。

关键词: 多输入多输出雷达, 双基地雷达系统, 频率分集阵列, 距离模糊杂波抑制

Abstract:

Under the high repetition rate pulse system, the ground clutter of the side looking multiple input multiple output (MIMO) array bistatic radar system has serious range dependence and clutter spectrum broadening problem. At the same time, the multi-dimensional clutter structure of bistatic radar faces the difficulty of obtaining sufficient training samples and high complexity of adaptive weighting algorithms. In this paper, a range ambiguous clutter suppression method for frequency diversity array (FDA)-MIMO bistatic radar based on transmitting main lobe correction is proposed. This method solves the problem of the main lobe illumination angle movement by correcting the main lobe of the equivalent emission pattern at the receiving end. Through the correction and compensation of the equivalent emission pattern main lobe and the reverse compensation after the received signal, the echo has a phase term of range coupling, which realizes the effective distinction of clutter at different range areas, solves the problem of clutter range ambiguity, and completes clutter suppression. The three-dimensional search is split into the form of "2+1". Firstly, the clutter is suppressed in the emission angle frequency domain and the Doppler domain, and the target parameter search is performed. Then, construct a dimensionality reduction matrix according to the obtained target transmitting angle and Doppler information, and perform dimensionality reduction search in the receiving angle frequency domain, which solves the problem of insufficient clutter samples and large amount of calculation. Finally, this method solves the problem of ground range clutter ambiguity in the large scene of bistatic early warning radar. Simulation experiments verify the effectiveness of the proposed method.

Key words: multiple input multiple output (MIMO) radar, bistatic radar system, frequency diversity array (FDA), range ambiguous clutter suppression

中图分类号:

TN959

王宇卓, 朱圣棋, 李西敏, 兰岚. FDA MIMO双基雷达主瓣走动矫正距离模糊杂波抑制[J]. 系统工程与电子技术, 2022, 44(5): 1483-1494.

Yuzhuo WANG, Shengqi ZHU, Ximin LI, Lan LAN. Range ambiguous clutter suppression for FDA MIMO bistatic radar with main lobe correction[J]. Systems Engineering and Electronics, 2022, 44(5): 1483-1494.

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参考文献 28

1	XIA D P, ZHANG L, WU T, et al. A mainlobe interference suppression algorithm based on bistatic airborne radar cooperation[C]//Proc. of the IEEE Radar Conference, 2019.
2	COX P B, ROSSUM W. Analysing multibeam, cooperative, ground based radar in a bistatic configuration[C]//Proc. of the IEEE International Radar Conference, 2020.
3	ZHANG J , DING T , ZHANG L R . Longtime coherent integration algorithm for high-speed maneuvering target detection using space-based bistatic radar[J]. IEEE Trans.on Geoscience and Remote Sensing, 2020, 60, 5100216.
4	HU J , LI J , LI H , et al. A novel covariance matrix estimation via cyclic characteristic for STAP[J]. IEEE Geoscience and Remote Sensing Letters, 2020, 17 (11): 1871- 1875. doi: 10.1109/LGRS.2019.2957023
5	LIU Z T, YU H Q, LI Z Y, et al. Non-stationary clutter suppression approach based on cascading cancellation for bistatic forward-looking SAR[C]//Proc. of the IEEE Radar Conference, 2019.
6	HAYWARD S D. Adaptive beamforming for rapidly moving arrays[C]//Proc. of the International Radar Conference, 1996: 480-483.
7	KOGON S M, ZATMAN M. Bistatic STAP for airborne radar bistatic radar motivation[C]]//Proc. of the Adaptive Sensor Array Processing Workshop, 2000.
8	MELVIN W L, CALLAHAN M J, WICKS M C. Adaptive clutter cancellation in bistatic radar[C]//Proc. of the 34th IEEE Asilomar Conference on Signals, Systems and Computers, 2000: 1125-1130.
9	BORSARI G K. Mitigating effects on STAP processing caused by an inclined array[C]//Proc. of the IEEE Radar Conference, 1998: 135-140.
10	HIMED B, ZHANG Y H, HAJJARI A. STAP with angle-Doppler compensation for bistatic airborne radars[C]//Proc. of the IEEE Radar Conference, 2002: 311-317.
11	MELVIN W L, HIMED B, DAVIS M E. Doubly adaptive bistatic clutter filtering[C]//Proc. of the IEEE Radar Conference, 2000: 171-178.
12	PEARSON F, BORSARI G. Simulation and analysis of adaptive interference suppression for bistatic surveillance radars[C]// Proc. of the Adaptive Sensor Array Processing Workshop, 2001.
13	FRIEDLANDER B. The MVDR beamformer for circular arrays[C]//Proc. of the 34th IEEE Asilomar Conference on Signals, Systems and Computers, 2000: 25-29.
14	PHILIPPE R , LAPIERRE F D , VERLY J G . Geometry-induced range-dependence compensation for bistatic STAP with conformal arrays[J]. IEEE Trans.on Aerospace & Electronic Systems, 2011, 47 (1): 275- 294.
15	WANG Y Z , ZHU S Q . Main-beam range deceptive jamming suppression with simulated annealing FDA-MIMO radar[J]. IEEE Sensors Journal, 2020, 20 (16): 9056- 9070. doi: 10.1109/JSEN.2020.2982194
16	XU Z T, HUANG B, WANG W Q. Performance prediction of FDA-MIMO radar detector[C]//Proc. of the IEEE Radar Conference, 2020.
17	GUI R H, WANG W Q. Adaptive transmit power allocation for fda radar with spectral interference avoidance[C]//Proc. of the IEEE Radar Conference, 2020.
18	LAN L, XU J W, LIAO G S, et al. Precise response control of transmit-receive two-dimensional beampattern in FDA-MIMO radar[C]//Proc. of the 27th European Signal Processing Conference, 2019.
19	CHENG J, CHEN H, GUI R H, et al. Persymmetric adaptive detector for FDA-MIMO radar[C]//Proc. of the IEEE Radar Conference, 2020.
20	CHENG J, HUANG B, TANG W R, et al. A deceptive jamming against spaceborne SAR based on Doppler-shift convolutional using FDA[C]//Proc. of the 6th Asia-Pacific Conference on Synthetic Aperture Radar, 2019.
21	WANG H , LIAO G S , XU J , et al. Transmit beampattern design for coherent FDA by piecewise LFM waveform[J]. Signal Processing, 2019, 161 (8): 14- 24.
22	SAMMARTINO P F, BAKER C J. Developments in the frequency diverse bistatic system[C]//Proc. of the IEEE Radar Conference, 2009: 1-5.
23	LAN L , LIAO G S , XU J , et al. Transceive beamforming with accurate nulling in FDA-MIMO radar for imaging[J]. IEEE Trans.on Geoscience and Remote Sensing, 2020, 58 (6): 4145- 4159. doi: 10.1109/TGRS.2019.2961324
24	XU J , ZHU S , LIAO G S . Range ambiguous clutter suppression for airborne FDA-STAP radar[J]. IEEE Journal of Selected Topics in Signal Processing, 2015, 9 (8): 1620- 1631. doi: 10.1109/JSTSP.2015.2465353
25	NOROOZI A, NAVEBI M M, AMIRI R. Target localization in distributed MIMO radar from time delays, Doppler shifts, azimuth and elevation angles of arrival[C]//Proc. of the 27th Iranian Conference on Electrical Engineering, 2019.
26	WANG P , LI H B . Target detection with imperfect waveform separation in distributed MIMO radar[J]. IEEE Trans.on Signal Processing, 2020,
27	CHEN Q S, WU X C, YANG Q, et al. Range-angle decoupled estimation based on grouped frequency coding method in monostatic FDA-MIMO radar[C]//Proc. of the IEEE International Conference on Signal, Information and Data Processing, 2019.
28	LIU Q , XU J W , DING Z , et al. Target localization with jammer removal using frequency diverse array[J]. IEEE Trans.on Vehicular Technology, 2020, 69 (10): 11685- 11686. doi: 10.1109/TVT.2020.3016948

参数	参数值
发射阵元数	16
接收阵元数	6
参考工作频率/GHz	1.104
信号带宽/kHz	19.478
阵列阵元间距/m	0.054 3
发射阵列速度/(m/s)	140
接收阵列速度/(m/s)	140
目标距离/km	63.2
目标归一化多普勒频率	-0.560
发射机高度/km	6
接收机高度/km	6
双基基线长度/km	50
脉冲重复频率/Hz	2 434.8
相干脉冲数	5
脉冲宽度/s	4.7e-05
频率增量/Hz	1 217.4
目标归一化接收角频率	-0.288
目标归一化发射角频率	0.160

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