Emitter Location with LES-8/9 Using Differential Time-of-Arrival and Differential Doppler Shift

Development of an emitter-location capability using differential time-of-arrival (DTOA) and different Doppler shift (DD) with the Lincoln Experimental Satellites 8 and 9 (LES-8/9) is described. Location of UHF sources over a large part of the earth can be estimated from observations as short as a fe...

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Bibliographic Details
Main Authors: Kaufmann, John E., Hutchinson, Warren K.
Other Authors: MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
Format: Text
Language:English
Published: 2000
Subjects:
Direction Finding
Radiofrequency Wave Propagation
Radio Communications
Unmanned Spacecraft
*DIRECTION FINDING
*SATELLITE COMMUNICATIONS
*RADIOFREQUENCY INTERFERENCE
*FREQUENCY ALLOCATION
SIGNAL PROCESSING
HALL EFFECT
EMITTERS
COMMUNICATION SATELLITES
ULTRAHIGH FREQUENCY
CROSS CORRELATION
DOPPLER EFFECT
SYNCHRONOUS SATELLITES
PHASE SHIFT
DTOA(DIFFERENTIAL TIME OF ARRIVAL)
Canada
Hall Beach
Online Access:http://www.dtic.mil/docs/citations/ADA375825
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA375825
Description
Summary:Development of an emitter-location capability using differential time-of-arrival (DTOA) and different Doppler shift (DD) with the Lincoln Experimental Satellites 8 and 9 (LES-8/9) is described. Location of UHF sources over a large part of the earth can be estimated from observations as short as a few seconds by the two satellites. The principles of this emitter-location method, DTOA and DD estimation procedures, and limitations on location-estimation accuracy are discussed. Results of tests using transmissions from Lincoln Laboratory, Lexington, Massachusetts, and from a USAF transmitter at Hall Beach, Canada, demonstrate the level of accuracy achievable in practice with LES-8/9. This report was originally Classified. It is being reissued with corrections of a few minor errors and misprints.

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