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zrotate at high speeds, up to 120 rpm. e radar was then evaluated in three dedicated trials on board the icebreaker CCGS Henry Larsen to demonstrate the capa- bility of the radar in a variety of operating environments and ice conditions. It was able to detect large targets such as vessels and icebergs at longer ranges than the conventional radar. e radar was also able to detect bergy bits and growlers from decaying icebergs at more than three nautical miles. Conventional radars have dif- culty detecting growlers beyond a half mile. The second phase of the ice hazard radar development began in 2009, with the purchase of a second Sigma S6 radar, also modied to rotate at high speed. e master? high-speed scanner transmits and receives in horizontal polarization (HH). e second or slave? scanner has a vertically-polarized antenna set to receive-only (HV) and is synchro- nized to the transmitting master radar in rotation, frequency, and pulse timing. The current stage of the project is the integration of the HH and HV sig- nals from the two receivers and the development of algorithms to display the cross-polarized images on a single screen. e ice hazard radar will be evaluated in an arctic trial in August 2011. Radarsat-2 has the ability to send and receive data in both horizontal and vertical polarizations, which helps Conventional radars have diculty detecting growlers beyond a half mile. January 2011 www.sname.org/sname/mt