Initial tests of point target geolocation for RADARSAT-2 data using a DEM

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Authors
  1. Beaulne, P.D.
  2. Sikaneta, I.C.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN)
Abstract
This Technical Memo provides an algorithm for geolocating targets detecteded in RADARSAT-2 imagery and presents results from initial testing. The method iteratively solves a system of geometrically based equations that is adapted to include radar squint and a digital elevation model to improve accuracy. Analysis of data collected over Ottawa shows that the geolocated targets differ, on average, by 21 metres from the Google Earth® reference imagery. The improvement of geolocation accuracy with the use of a digital elevation model (DEM) is clearly illustrated using data collected in mountainous terrain near Vancouver. The results obtained are in accordance with other studies on the accuracy of RADARSAT-1 and RADARSAT-2 geolocation and are of the same order as the inherent error in Google Earth® imagery.

Il y a un résumé en français ici.

Report Number
DRDC-OTTAWA-TM-2008-344 — Technical Memorandum
Date of publication
01 Apr 2009
Number of Pages
34
DSTKIM No
CA032509
CANDIS No
531670
Format(s):
Electronic Document(PDF)

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