Experimental performance of calibration and direction-finding algorithms
- 1 January 1991
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1365-1368 vol.2
- https://doi.org/10.1109/icassp.1991.150676
Abstract
In sensor array processing, high-resolution eigenbased direction-finding algorithms are known to be sensitive to sensor gain, phase, and mutual coupling errors. In order to approach the algorithms' theoretical direction-finding performance in actual arrays, methods are required to measure these errors and compensate for them. The authors develop calibration procedures based on least squares fitting of known measured direction vectors. After calibration any appropriate direction-finding algorithm may be applied. Experimental results from an ultrasonic array testbed demonstrate the performance of the calibration algorithms. A previously proposed autocalibration algorithm is discussed. The algorithm is shown to give nonunique solutions for linear arrays.Keywords
This publication has 9 references indexed in Scilit:
- Direction Finding In The Presence Of Mutual CouplingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Direction of arrival estimation by eigenstructure methods with unknown sensor gain and phasePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Eigenstructure methods for direction finding with sensor gain and phase uncertaintiesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Direction finding using an interpolated arrayPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A phased array calibration technique using eigenstructure methodsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A sensitivity analysis of the MUSIC algorithmIEEE Transactions on Acoustics, Speech, and Signal Processing, 1990
- Eigenstructure methods for direction finding with sensor gain and phase uncertaintiesCircuits, Systems, and Signal Processing, 1990
- Direction-finding using a laboratory experimental array testbedPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1990
- Robust algorithms for direction-finding in the presence of model errorsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1990