ENHANCING THE ACCURACY OF LAND-BASED RADIO DIRECTION FINDING SYSTEMS

Authors
  1. Litva, J.
  2. Zeytinoglu, M.
  3. Reilly, J.P.
Corporate Authors
McMaster Univ, Hamilton ONT (CAN) Communications Research Lab;Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The report evaluates several representative types of superresolution radio direction finding methods for HF/VHF land tactical purposes. The types of methods examined are categorized as (1) least squares, (2) projection based, and (3) maximum likelihood. The report begins with a discussion of the signal and environmental models used for evaluation purposes. This is followed by a discussion of the theoretical basis of the various superresolution methods with limited comparisons between some methods being made. Practical implementation of these methods using digital beamforming techniques is also discussed. Finally, accuracies of the various methods are evaluated, using computer simulations, for different signal and environments with emphasis on the effects of multipath. The results of these simulations indicate that in terms of accuracy, maximum likelihood methods are significantly better than the other methods. The penalty is increased computational complexity.
Date of publication
15 Nov 1989
Number of Pages
313
DSTKIM No
90-01826
CANDIS No
64093
Format(s):
Hardcopy;Originator's fiche received by DSIS

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