Title :
Array shape calibration using sources in known directions
Author :
Zhang, Ming ; Zhu, Zhao-Da
Author_Institution :
Dept. of Electron. Eng., Nanjing Aeronaut. Inst., China
Abstract :
Sensor position uncertainty can severely degrade the performance of array processing. A new calibration method is presented for direction-finding with sensor position uncertainties, which is based on eigenvalue decomposition of the sample covariance matrix and three or more non-disjoint sources in known directions. The method can be applied to arbitrary arrays, including linear arrays, requires less computations and suits for low SNR cases. Computer simulations are presented to illustrate the performance of the proposed method
Keywords :
array signal processing; calibration; digital simulation; eigenvalues and eigenfunctions; parameter estimation; array processing; array shape calibration; calibration; computer simulations; direction-finding; eigenvalue decomposition; linear arrays; minimisation; nondisjoint sources; sample covariance matrix; sensor position uncertainties; sensor position uncertainty; Array signal processing; Calibration; Computer simulation; Covariance matrix; Degradation; Eigenvalues and eigenfunctions; Navigation; Sensor arrays; Shape; Uncertainty;
Conference_Titel :
Aerospace and Electronics Conference, 1993. NAECON 1993., Proceedings of the IEEE 1993 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-1295-3
DOI :
10.1109/NAECON.1993.290895
