AN ANALYSIS OF THE EXPERIMENTAL DATA MEASURED WITH THE MODIFIED HF SURFACE-WAVE RADAR AT CAPE BONAVISTA

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Authors
  1. Leong, H.W.H.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The report presents the results of an analysis of the data measured with the experimental High-Frequency Surface-Wave Radar (HFSWR) at Cape Bonavista, after a major modification in the radar receiver. The radar was evaluated at four different radio frequencies (4.3, 10.62, 18.65 and 27.8 MHz) and a target was detected at each of the frequencies. Specifically, a low-flying Beechcraft Kingair was detected beyond the line of sight to a distance of about 110 km when the radar operated at 4.3 MHz with an average transmitter power of about 40 Watts. A low-flying Piper Navajo was detected within the line of sight up to a range of 26 km when the radar operated at 27.8 MHz. Half-wavelength long copper wires (#18 AWG) were used as test targets at the radio frequencies of 10.62 and 18.65 MHz. Each wire was attached to a helium balloon, which was then carried away by a strong outward wind. Some of these targets were tracked to a range of about 101 km at 10.62 MHz, and to a range of about 66 km at 18.65 MHz. The detection of the Kingair by the HFSWR at 4.3 MHz was also studied by simulation. The simulation results showed that the radar could detect the Kingair up to a distance of 95 km. By comparing the simulation results with the experimental results at 4.3 MHz, we found that the measured performance of the radar agreed well with the theoretical performance in the range interval from 35 to 95 km, when the target was detected beyond the line of sight. TRUNCATED
Keywords
HFSWR Radar receiver;HFSWR (High Frequency Surface Wave Radar);Half-Wavelength Copper Wires;Aircraft targets;Target detection
Report Number
DREO-1312 — Technical Report
Date of publication
01 Jul 1997
Number of Pages
75
DSTKIM No
97-04050
CANDIS No
505051
Format(s):
Hardcopy;Document Image stored on Optical Disk

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