首页|Reduced-complexity multiple parameters estimation via toeplitz matrix triple iteration reconstruction with bistatic MIMO radar

Reduced-complexity multiple parameters estimation via toeplitz matrix triple iteration reconstruction with bistatic MIMO radar

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In this advanced exploration,we focus on multiple parameters estimation in bistatic Multiple-Input Multiple-Output(MIMO)radar systems,a crucial technique for target localization and imaging.Our research innovatively addresses the joint estimation of the Direction of Departure(DOD),Direction of Arrival(DOA),and Doppler frequency for incoherent targets.We propose a novel approach that significantly reduces computational complexity by utilizing the Temporal-Spatial Nested Sampling Model(TSNSM).Our methodology begins with a multi-linear mapping mechanism to efficiently eliminate unnecessary virtual Degrees of Freedom(DOFs)and reorganize the remaining ones.We then employ the Toeplitz matrix triple iteration reconstruction method,sur-passing the traditional Temporal-Spatial Smoothing Window(TSSW)approach,to mitigate the single snapshot effect and reduce computational demands.We further refine the high-dimensional ESPRIT algorithm for joint estimation of DOD,DOA,and Doppler frequency,elim-inating the need for additional parameter pairing.Moreover,we meticulously derive the Cramér-Rao Bound(CRB)for the TSNSM.This signal model allows for a second expansion of DOFs in time and space domains,achieving high precision in target angle and Doppler frequency estima-tion with low computational complexity.Our adaptable algorithm is validated through simulations and is suitable for sparse array MIMO radars with various structures,ensuring higher precision in parameter estimation with less complexity burden.

MIMO RadarMultiple parameters estima-tionTemporal-spatial Nested SamplingMulti-linear mapping mech-anismToeplitz matrix triple itera-tion reconstructionReduce computational complexity

Chenghong ZHAN、Guoping HU、Junpeng SHI、Fangzheng ZHAO、Hao ZHOU

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Graduate College,Air Force Engineering University,Xi'an 710051,China

Air and Missile Defense College,Air Force Engineering University,Xi'an 710051,China

College of Electronic Countermeasure,National University of Defense Technology,Hefei 230037,China

Beijing Aeronautical Technology Research Center,Beijing 100076,China

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National Natural Science Foundation of ChinaChina Postdoctoral Science FoundationScience and Technology Innovation Program of Hunan Province,China

620714762022M7238792021RC3080

2024

10.1016/j.cja.2024.04.027

中国航空学报(英文版)
中国航空学会

中国航空学报(英文版)

CSTPCDEI
影响因子：0.847
ISSN：1000-9361
年,卷(期)：2024.37(7)
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