For direction finding (DF) systems that derive the emitter angle of arrival (AOA) from the phase of a complex-valued signal, the AOA accuracy can often be improved by processing multiple data records, particularly when the signal-to-noise ratio is low. There are three closely related but distinctly different approaches to improving the accuracy of AOA estimation. The main goal of this paper is to present a unified theory for these AOA averaging techniques using a Gaussian signal model. Detailed algorithm analysis and performance comparisons are provided.

Angle of arrival (AOA) estimation, AOA averaging methods, Direction finding, Maximum likelihood estimation
2010 23rd Canadian Conference on Electrical and Computer Engineering, CCECE 2010
Department of Systems and Computer Engineering

Wang, S. (Sichun), Inkol, R. (Robert), Rajan, S, & Patenaude, F. (François). (2010). Strategies for improving angle of arrival accuracy in direction finding systems. In Canadian Conference on Electrical and Computer Engineering. doi:10.1109/CCECE.2010.5575260