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|845 - KHF - Kapuskasing HF Radar|
Instrument Type: Instrument > Radar > CoherentIonosphericRadar > HFRadar
Observation Site: KHF - Kapuskasing HF Radar
Instrument Page: KHFDescription:
The Kapuskasing HF radar is located in northern Ontario (49.39 deg N, -82.32 deg E) and looks over a section of ionosphere poleward of 50 deg N that covers north-central Canada including Hudson Bay and the Canadian arctic archipelago. It has operated since 1993. The facility is part of the SuperDARN network of HF radars that extends from western North America to Scandinavia in the Northern hemisphere and covers much of Antarctica in the Southern hemisphere. The SuperDARN radar for the most direct 2-D merging of Kapuskasing velocity data is located at Saskatoon, Saskatchewan. The radar forms and steers its beam by the phasing of transmissions from 16 elements in a linear antenna array. A second 4-element array provides the capability to measure elevation angle. The basic radar operation consists of the following steps: i) selection of a beam position (0-15), ii) search for the quietest 5-kHz channel about the assigned transmitting frequency (8-20 MHz), iii) repeated transmission of a multi-pulse sequence over the selected integration period and reception of backscattered signal with gating in range (1-70), and iv) calculation of the auto-correlation functions (ACFs). These operations are usually carried out in sequence for the 16 beam positions, which collectively constitute 1 scan. The beam integration period is typically 6 or 7 sec, and the scan repeat time is 96 sec or 120 sec. Within a scan, beam 0 corresponds to the most westward beam position and beam 15 to the most eastward. The azimuth sector scanned is westward approximately 50 deg wide and is centered on -12 deg E of N.