Emitter geolocation estimation using power difference of arrival – An algorithm comparison for non-cooperative emitters

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Authors
  1. Jackson, B.R.
  2. Wang, S.
  3. Inkol, R.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN)
Abstract
The performance of several power difference of arrival (PDOA), also known as received signal strength difference (RSSD), emitter geolocation algorithms, is explored. First, a general discussion of radio frequency emitter geolocation techniques is presented. Afterwards, the motivation for employing PDOA geolocation techniques is discussed, followed by a review of several path loss models and a description of algorithms for obtaining geolocation solutions from PDOA measurement data: Non-Linear Least Squares, the Discrete Probability Density method, Maximum Likelihood, the Intersection Density method, and three Least Squares techniques. Both simulated and measured data are used to compare the geolocation estimation accuracy and computational complexity of these algorithms. A MATLAB–Google Earth testbed was developed to aid in the visualization and interpretation of the results of the experimentation. Finally, conclusions and recommendations regarding the selection of the most appropriate PDOA algorithms for a given application are given.

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Report Number
DRDC-OTTAWA-TR-2011-040 — Technical Report
Date of publication
01 May 2011
Number of Pages
80
DSTKIM No
CA035254
CANDIS No
534968
Format(s):
Electronic Document(PDF)

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