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Title: Phase difference of arrival geolocation

Patent ·
OSTI ID:1357505
;

Geolocation is performed by receiving, at a plurality of non-earthbound platforms each moving in a known manner within a spatial coordinate system, a radio frequency (RF) signal transmitted from a transmitter at an unknown location on earth within the spatial coordinate system. For each of the platforms, a phase change of the received frequency carrier is measured over the same duration of time. The measured phase changes are combined to determine the transmitter location.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation
Patent Number(s):
9,651,648
Application Number:
13/527,383
OSTI ID:
1357505
Resource Relation:
Patent File Date: 2012 Jun 19
Country of Publication:
United States
Language:
English

References (13)

System and method for determining the geolocation of a transmitter patent February 1998
Combined phase-circle and multiplatform TDOA precision emitter location patent June 1999
Multiplatform ambiguous phase circle and TDOA protection emitter location patent December 1999
Wireless geolocation system patent December 1999
Method for reducing geometrical dilution of precision in geolocation of emitters using phase circles patent September 2001
Multi-platform geolocation method and system patent June 2002
Multiplatform TDOA correlation interferometer geolocation patent November 2008
Method and system for emitter localisation patent August 2009
Device for and method of geolocation patent February 2011
System of geographical location of a radio signal transmitter located on the earth's surface, and associated method of distributed interferometry patent February 2015
Differential emitter geolocation patent August 2015
Emitter Geolocation patent-application May 2008
Precision Geolocation Of Moving Or Fixed Transmitters Using Multiple Observers patent-application November 2011

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