Global to push GA events into
skip to main content

Title: Phase difference of arrival geolocation

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.
Inventors:
;  [1]
  1. (
Issue Date:
OSTI Identifier:
1357505
Assignee:
Sandia Corporation SNL-A
Patent Number(s):
9,651,648
Application Number:
13/527,383
Contract Number:
AC04-94AL85000
Resource Relation:
Patent File Date: 2012 Jun 19
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 47 OTHER INSTRUMENTATION

Other works cited in this record:

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

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

Similar records in DOepatents and OSTI.GOV collections: