Title :
The effect of source number underestimation on MUSIC location estimates
Author :
Radich, Bill M. ; Buckley, Kevin M.
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
fDate :
1/1/1994 12:00:00 AM
Abstract :
An analytical expression for the variance of MUSIC source location estimates is derived under the assumption that the detection step has already taken place, resulting in an underestimation of the source number. The analytic predictions are compared with Monte-Carlo simulation results for beam-space MUSIC. The derived variance expression is more general than those reported to date and is also valid for other situations where the asymptotic correlation matrix yields biased source estimates
Keywords :
array signal processing; correlation theory; matrix algebra; signal detection; MUSIC location estimates; Monte-Carlo simulation; asymptotic correlation matrix; beam-space MUSIC; biased source estimates; detection step; source number underestimation; variance; Analysis of variance; Covariance matrix; Eigenvalues and eigenfunctions; Gaussian noise; Multiple signal classification; Narrowband; Position measurement; Sensor arrays; Signal analysis; Signal processing;
Journal_Title :
Signal Processing, IEEE Transactions on
