A Novel Unitary ESPRIT Algorithm for Monostatic FDA-MIMO Radar

被引：28
作者：
Liu, Feilong [1 ,2 ]
Wang, Xianpeng [1 ,2 ]
Huang, Mengxing [1 ,2 ]
Wan, Liangtian [3 ]
Wang, Huafei [1 ,2 ]
Zhang, Bin [4 ]
机构：
[1] Hainan Univ, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China
[2] Hainan Univ, Sch Informat & Commun Engn, Haikou 570228, Hainan, Peoples R China
[3] Dalian Univ Technol, Sch Software, Key Lab Ubiquitous Network & Serv Software Liaoni, Dalian 116620, Peoples R China
[4] Kanagawa Univ, Dept Mech Engn, Kanagawa Ku, 3-27-1 Rokkakubashi, Yokohama, Kanagawa 2218686, Japan
来源：
SENSORS | 2020年 / 20卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Unitary ESPRIT; FDA-MIMO radar; parameter estimation; phase period ambiguity; FREQUENCY DIVERSE ARRAY; OF-ARRIVAL ESTIMATION; ANGLE ESTIMATION; COPRIME ARRAY; MASSIVE MIMO; RANGE;
D O I：
10.3390/s20030827
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel unitary estimation of signal parameters via rotational invariance techniques (ESPRIT) algorithm, for the joint direction of arrival (DOA) and range estimation in a monostatic multiple-input multiple-output (MIMO) radar with a frequency diverse array (FDA), is proposed. Firstly, by utilizing the property of Centro-Hermitian of the received data, the extended real-valued data is constructed to improve estimation accuracy and reduce computational complexity via unitary transformation. Then, to avoid the coupling between the angle and range in the transmitting array steering vector, the DOA is estimated by using the rotation invariance of the receiving subarrays. Thereafter, an automatic pairing method is applied to estimate the range of the target. Since phase ambiguity is caused by the phase periodicity of the transmitting array steering vector, a removal method of phase ambiguity is proposed. Finally, the expression of Cramer-Rao Bound (CRB) is derived and the computational complexity of the proposed algorithm is compared with the ESPRIT algorithm. The effectiveness of the proposed algorithm is verified by simulation results.
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页数：17
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