Antenna Array Methods for Communications, Direction Estimation, and GPS

摘要

We developed a unified statistical framework for deriving signal processing methods. In electromagentics we developed methods for source tracking using an EM vector- sensor antenna; we designed such an antenna of compact shape. In radar we derived Cram/'er-Rao bounds for estimating a target range, velocity, and direction; developed a novel parametric approach for estimating and mitigating interferences in STAP. In communications we considered space-time fading channel estimation and symbol detection in spatially correlated noise; finite-length MIMO adaptive equalization; and channel estimation for OFDM wireless systems. In acoustics we considered wideband source localization using a distributed acoustic vector-sensor array; source direction with an array near a boundary; and noise-reduction algorithm for dual-microphone systems. We analyzed the cross-correlations between wide-band noise components of a vector sensor. We applied our results to various biomedical problems. Several successful transitions resulted from this project.