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A satellite interference location system using differential time and phase measurement techniques

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2 Author(s)
Smith, W.W., Jr. ; Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Steffes, P.G.

The design and development of a system for inferring the position of terrestrial satellite uplink stations using existing domestic satellites with minimal disruption to normal satellite operation are described. Two methods are presented by which a quantity measured at a terrestrial receiving site is mapped into a curve of possible uplink locations on the Earth's surface. One method involves measuring differential time delays of a single uplink signal observed through two adjacent spacecraft. The other uses a short baseline interferometer composed of the two cross-polarized and spatially separated antenna feeds aboard an affected satellite. A unique location is obtained by using an appropriate combination of the two methods. A system for measurement of the required differential delays and phases and experimental work performed to demonstrate the feasibility of the location methods are described.<>

Published in:

Aerospace and Electronic Systems Magazine, IEEE  (Volume:6 ,  Issue: 3 )

Date of Publication:

March 1991

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