Accession Number : ADA261781


Title :   Geolocation of an Electromagnetic Emitter Using a Cyclostationary Time Difference of Arrival Technique


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Benson, Timothy A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a261781.pdf


Report Date : 17 Dec 1992


Pagination or Media Count : 88


Abstract : Many applications of signal processing require that the location of an electromagnetic emitter be determined. This thesis applies an algorithm developed by Dr. William A. Gardner in 1987, that geolocates such an emitter. Special features of the algorithm not only allow the detection of cyclostationary signals in strong negative signal to noise ratio environments, but also discriminate against unwanted signals not of interest that may either occupy the same frequency band or have similar signal characteristics as the signal of interest. This is accomplished by determining spectral correlation densities for cycle frequencies equal to various exploitable features of the bpsk direct sequence spread spectrum signal....Geolocation, Cyclostationary, TDOA, Spectral correlation, Cycle frequency, BPSK, Spread spectrum.


Descriptors :   *RADIO DIRECTION FINDERS , ALGORITHMS , SIGNAL PROCESSING , FREQUENCY , RATIOS , ENVIRONMENTS , DETECTION , PROCESSING , ELECTROMAGNETIC PROPERTIES , SIGNAL TO NOISE RATIO , THESES , FREQUENCY BANDS , SIGNALS , EMITTERS , NOISE(RADIO)


Subject Categories : Direction Finding


Distribution Statement : APPROVED FOR PUBLIC RELEASE