Accession Number : ADA322957

Title :   Advanced Sensor Signal Processing Using Optical Techniques.

Descriptive Note : Final technical rept. Sep 95-Sep 96,

Corporate Author : ESSEX CORP COLUMBIA MD

Personal Author(s) : Eichel, Laurence A. ; Franklin, William R. ; Gesell, Leslie H. ; Kallman, Robert ; Evanko, Stephen

PDF Url : ADA322957

Report Date : FEB 1997

Pagination or Media Count : 77

Abstract : A Fourier transform based iterative technique is presented for solution of Toeplitz and general matrix equations resulting in an algorithm for the determination of an adaptive beam steering vector from the radar covariance matrix. An associated optoelectronic architecture is offered that computer simulation shows will be more than forty times faster that plausible all-digital alternatives. A quantitative comparison is made between 1860 based architectures and the patented ImSyn(TM) optoelectronic processor for the formation of SAR images. It is shown that the ImSyn(TM) processor meets or exceeds all requirements for current and next generation SAR in a package that is smaller, lighter and that consumes less power than the all-digital devices. Complex valued spatial filters are developed for SAR ATR using simulated SAR images. When implemented on the ImSyn(TM) processor, a high degree of discrimination is demonstrated even between quite similar targets. Optoelectronic implementation of the maximum energy recovery algorithm (MERA) is studied for the tracking of sub-pixel moving targets. System parameters are given and it is found that most components are or will be commercially available.

Descriptors :   *SIGNAL PROCESSING, *FOURIER TRANSFORMATION, *ELECTROOPTICS, *RADAR SIGNALS, *ITERATIONS, ALGORITHMS, COMPUTERIZED SIMULATION, REQUIREMENTS, DIGITAL SYSTEMS, METHODOLOGY, OPTICS, RECOVERY, DETECTORS, PARAMETERS, MATRICES(MATHEMATICS), COMPARISON, ENERGY, RADAR TRACKING, ADAPTIVE SYSTEMS, COVARIANCE, RADAR TARGETS, DISCRIMINATION, ARCHITECTURE, SPATIAL FILTERING, BEAM STEERING.

Subject Categories : Electrooptical and Optoelectronic Devices
      Numerical Mathematics
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE