TY - GEN
T1 - Source Number and DOA Estimation Method Based on Eigen-Beam MUSIC for Closely Spaced Signals
AU - Liu, Li
AU - Yang, Xiaopeng
AU - Gao, Sheng
AU - Li, Shuai
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/12
Y1 - 2019/12
N2 - The estimation accuracy would degrade severely when two signal sources with different power are located closely by conventional DOA methods. In order to solve this problem, a estimation method based on Eigen-Beam MUSIC is proposed to obtain the DOA and source number jointly. Firstly, the source spectrum is constructed, and then the source number can be estimated by comparing the peak value of each peak and the noise power. Secondly, the DOA spatial spectrum is constructed by combining MUSIC spatial spectrum and eigen-beam spatial spectrum, which can enhance the spectral peak of weak sources in the signal subspace, and then estimate the DOA by searching the angle corresponding to the peak. Compared with the existing method, the proposed method has the simper computation and better estimation performance. Some results of numerical experiments are provided to demonstrate the effectiveness of the proposed method.
AB - The estimation accuracy would degrade severely when two signal sources with different power are located closely by conventional DOA methods. In order to solve this problem, a estimation method based on Eigen-Beam MUSIC is proposed to obtain the DOA and source number jointly. Firstly, the source spectrum is constructed, and then the source number can be estimated by comparing the peak value of each peak and the noise power. Secondly, the DOA spatial spectrum is constructed by combining MUSIC spatial spectrum and eigen-beam spatial spectrum, which can enhance the spectral peak of weak sources in the signal subspace, and then estimate the DOA by searching the angle corresponding to the peak. Compared with the existing method, the proposed method has the simper computation and better estimation performance. Some results of numerical experiments are provided to demonstrate the effectiveness of the proposed method.
KW - MUSIC
KW - closely spaced sources
KW - direction of arrival (DOA)
KW - source number estimation
UR - http://www.scopus.com/inward/record.url?scp=85091911178&partnerID=8YFLogxK
U2 - 10.1109/ICSIDP47821.2019.9173374
DO - 10.1109/ICSIDP47821.2019.9173374
M3 - Conference contribution
AN - SCOPUS:85091911178
T3 - ICSIDP 2019 - IEEE International Conference on Signal, Information and Data Processing 2019
BT - ICSIDP 2019 - IEEE International Conference on Signal, Information and Data Processing 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE International Conference on Signal, Information and Data Processing, ICSIDP 2019
Y2 - 11 December 2019 through 13 December 2019
ER -