Accession Number : ADA315606

Title :   New Physical Models and Methods for Source Localization.

Descriptive Note : Final rept. Feb 93-Aug 96,

Corporate Author : YALE UNIV NEW HAVEN CT

Personal Author(s) : Nehorai, Arye

PDF Url : ADA315606

Report Date : AUG 1996

Pagination or Media Count : 11

Abstract : The research focuses on the development of sensor processing methods for source localization and parameter estimation. The main contributions are: the introduction of electromagnetic and acoustic vector-sensor processing; development of radar polarimetric methods, including remote sensing applications, and optimum choices of transmitting signals and polarizations; methods for sensor calibration using active sources; localizing sources using a small number of mobile sensors that can replace methods with a large number of stationary sensors; localization of vapor emitting sources with chemical sensor arrays; detection of radioactive sources with projection-based sensor arrays; localization of current dipoles with SQUID magnetic sensors. The methods have been analyzed using performance bounds, statistical techniques, and computer simulations. Several fundamental results have been established on source parameter identifiability, such as expressions for the maximum number of sources identifiable in array processing models. Other results include techniques for quantifying and tracking non-rigid object motion and for spectral line filtering. Transition of the acoustic work has been made to the Naval ASTO Office and NUWC Lab. Potential transitions to civilian applications include seismology, biomedicine, and environmental sensing.

Descriptors :   *TRACKING, *POLARIMETRY, *HUMAN FACTORS ENGINEERING, *DATA REDUCTION, COMPUTERIZED SIMULATION, DATA PROCESSING, METHODOLOGY, REMOTE DETECTORS, ACOUSTICS, CALIBRATION, RADAR SIGNALS, STATISTICAL PROCESSES, BIOMEDICINE, CHEMICAL DETECTION, SPECTRAL LINES, MAGNETIC DETECTION.

Subject Categories : Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE