Integrated Satellite Radar Array Processing
Abstract
In electromagnetic signal processing, we computed Cramer-Rao bounds and ambiguity functions for estimating range, velocity, and direction using an active radar array. We derived bounds on the mean-square error for estimating vector systems, and analyzed the performance breakdown of subspace-based methods. We proposed methods for target tracking and interference cancellation using EM vector-sensor antennas; we also designed such an antenna of compact shape. We developed methods for fading channel estimation and symbol detection in unknown spatially correlated noise, and finite-length multi-input multi-output (MIMO) adaptive equalization. We also considered the equalization of a channel with discrete multi-tone (DMT) systems and insufficient cyclic prefix. We developed techniques for detecting the wake of a ship using an airborn SQUID magnetic transducer. In acoustics, we analyzed the effects of placements of acoustic vector sensor (AVS's) on the performance of direction finding. We developed methods for direction finding with an AVS's array near a reflecting boundary, and fast wide-band methods for finding the 3D position of a target. We computed expressions for the cross-correlations between wide-band noise components of an AVS's, and developed a noise-reduction algorithm for dual-microphone systems useful for hearing aids. We proposed procedures for detecting explosives with chemical sensing, such as automatic landmine detection and localization using chemical sensor array processing and statistical hypothesis testing. In biomedical applications, we estimated parameters of electrical source in the brain, including their location and moments, using EEG and MEG sensor arrays.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2001
- Accession Number
- ADA398559
Entities
People
- Arye Nehorai
Organizations
- University of Illinois at Chicago