The effects of Sea Clutter on the Performance of HF Surface Wave Radar in Ship Detection and the Implication on the Radar Design

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Authors
  1. Leong, H.
  2. Ponsford, A.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN)
Abstract
The effects of sea clutter on the performance of HF Surface Wave Radar HFSWR) operating in the frequency band between 3 and 5 MHz are studied in this technical memorandum. The HFSWR is designed to detect two classes of ships: large freighters with a Gross Registered Tonnage (GRT) in the order of several tens of thousands of tons and small vessels with a GRT of about 1000 tons. Representative levels of the radar returns from the large and small targets are estimated from the HFSWR at Cape Race, Newfoundland. The estimated returns are then compared with the sea echoes measured from the same radar to assess the capability of the radar under different sea conditions. The conclusions of the study are that, in the detection of the large ships, the radar performance is independent of sea state, but in the detection of the small ships, the radar performance is dependent on sea state. It is shown that if a radar employing conventional linear beamforming methods is to maintain the detection capability for the small ships, then the aperture of the receive array cannot be reduced from its current value.

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Report Number
DRDC-VALCARTIER-TM-2007-325 — Technical Memorandum
Date of publication
01 Dec 2007
Number of Pages
28
DSTKIM No
CA030737
CANDIS No
529372
Format(s):
Hardcopy;CD ROM

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