Detection of aircraft by high frequency sky wave radar under auroral clutter-limited conditions

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Authors
  1. Riddolls, R.J.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN)
Abstract
This memorandum describes some of the rudimentary considerations for operating a high frequency sky wave radar in Canada for aircraft detection. A simple macroscopic model of the ionosphere is examined, and the elevation and range resolution limits of a high frequency radar are computed. Limits on azimuth and Doppler resolving capabilities of a radar arise from the presence of plasma density irregularities in the ionospheric propagation path. Scattering from the aurora is quantified using Thomson scattering theory and reasonable agreement with the experimental values of radar cross section can be found in the case of 1-percent plasma density fluctuations. However, the auroral scatter is sufficiently large to prevent detection of small aircraft with radar cross sections of 10 to 20 dBm². Combining receive-side adaptive processing with adaptive elements on the transmit side allows the targets to be detected.

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Report Number
DRDC-OTTAWA-TM-2008-336 — Technical Memorandum
Date of publication
01 Mar 2009
Number of Pages
38
DSTKIM No
CA033123
CANDIS No
532391
Format(s):
Electronic Document(PDF)

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