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Null Broadening Robust Adaptive Beamforming Algorithm Based on Power Estimation.
- Source :
-
Sensors (14248220) . Sep2022, Vol. 22 Issue 18, p6984-N.PAG. 18p. - Publication Year :
- 2022
-
Abstract
- In order to solve the problem of severely decreased performance under the situation of rapid moving sources and unstable array platforms, a null broadening robust adaptive beamforming algorithm based on power estimation is proposed in this paper. First of all, we estimate the interference signal power according to the characteristic subspace theory. Then, the correspondence between the signal power and steering vector (SV) is obtained based on the orthogonal property, and the interference covariance matrix (ICM) is reconstructed. Finally, with the aim of setting virtual interference sources, null broadening can be carried out. The proposed algorithm results in a deeper null, lower side lobes and higher tolerance of the desired signal steering vector mismatch under the condition of low complexity. The simulation results show that the algorithm also has stronger robustness. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BEAMFORMING
*POWER steering
*ALGORITHMS
*COVARIANCE matrices
*PROBLEM solving
Subjects
Details
- Language :
- English
- ISSN :
- 14248220
- Volume :
- 22
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- Sensors (14248220)
- Publication Type :
- Academic Journal
- Accession number :
- 159357442
- Full Text :
- https://doi.org/10.3390/s22186984