TY - GEN
T1 - DOA Estimation Algorithm of Coherent Signals for Cylindrical Conformal Arrays based on Fourth-Order Cumulation
AU - Gao, Xiaofeng
AU - Li, Ping
AU - Zhang, Hongyun
AU - Zhang, Lin
AU - Sui, Jian
N1 - Publisher Copyright:
© 2022 ACM.
PY - 2022/11/25
Y1 - 2022/11/25
N2 - In this paper, an effective direction of arrival (DOA) estimation algorithm of coherent signals for cylindrical conformal arrays (CCAs) based on fourth-order cumulation is proposed. Affected by the shadow effect, the CCAs is divided into several subarrays to obtain the output vector without zero element. To mitigate the element loss of subarray, an improved interpolation method is utilized to transform the directional subarray into the virtual nested arrays. Then, the full rank covariance matrix is constructed using the fourth-order cumulation of virtual nested arrays, which realize the decoherence of cohetent signals. Finally, the unitary estimation of the signal parameters via rotational invariance techniques (ESPRIT) is conducted on the matrix to obtain the angle of incident signals. Simulation results demonstrate the validity of proposed algorithm.
AB - In this paper, an effective direction of arrival (DOA) estimation algorithm of coherent signals for cylindrical conformal arrays (CCAs) based on fourth-order cumulation is proposed. Affected by the shadow effect, the CCAs is divided into several subarrays to obtain the output vector without zero element. To mitigate the element loss of subarray, an improved interpolation method is utilized to transform the directional subarray into the virtual nested arrays. Then, the full rank covariance matrix is constructed using the fourth-order cumulation of virtual nested arrays, which realize the decoherence of cohetent signals. Finally, the unitary estimation of the signal parameters via rotational invariance techniques (ESPRIT) is conducted on the matrix to obtain the angle of incident signals. Simulation results demonstrate the validity of proposed algorithm.
KW - cylindrical conformal arrays
KW - direction of arrival (DOA)
KW - fourth-order cumulation
KW - virtual nested arrays
UR - http://www.scopus.com/inward/record.url?scp=85153395129&partnerID=8YFLogxK
U2 - 10.1145/3577164.3577189
DO - 10.1145/3577164.3577189
M3 - Conference contribution
AN - SCOPUS:85153395129
T3 - ACM International Conference Proceeding Series
SP - 158
EP - 163
BT - Proceedings of the 2022 4th International Conference on Video, Signal and Image Processing, VSIP 2022
PB - Association for Computing Machinery
T2 - 4th International Conference on Video, Signal and Image Processing, VSIP 2022
Y2 - 25 November 2022 through 27 November 2022
ER -