4473 Space News – Jan 2009 – Navigating Sea Ice with Image Access Solutions. The Norwegian Coast Guard is using satellite imagery delivered to Iridium satellite phones to navigate through the ice-infested waters of the Arctic Ocean. This imagery, captured by the European Space Agency's Envisat satellite and Canada's Radarsat-1 satellite, is being collected, processed, compressed and sent to hand-held devices within 30 minutes. What is the equation for ENVI's Photographic Stretch routine? How can I import my GPS Points into ENVI Classic?