A uniform rectangular array of isotropic sensors of stochastic gains: The hybrid Cramer-Rao bound for direction finding
Dominic Makaa Kitavi, Kainam Thomas Wong · The Journal of the Acoustical Society of America · 2019
Real-world sensors deviate from their nominal gain; that deviation could be modeled stochastically. Such sensors, populating a rectangular array grid, would affect the consequential direction finding's statistical precision, which is quantified here via the Cramer-Rao lower bound of the direction-of-arrival estimation variance.