Tag Archives: corner reflector

IceSAR and a corner reflector

From Tania (ESA), Greenland 24 April On Saturday (21 April) the campaign team was up bright and early to get a head start on a special task, which is quite particular to radar sensors in both in the air and space: the deployment of a corner reflector. These rather futuristic looking trihedral-shaped metallic objects – appearing slightly out of place with the natural rocky surroundings of Greenland –  play a crucial role in ensuring that the radar images generated by the campaign are properly calibrated and, therefore, useful for science. When imaged from the air, the corner reflectors reflect the incoming radar waves back to the airborne sensor and later on appear...

Great day for sea-ice research as ESA and NASA work tog...

From Michael (NASA), over Alert, 15 April Today’s flight was a coordinated effort between ESA’s CryoVEx campaign and NASA’s Operation IceBridge. The CryoVEx 2011 teams are currently operating from Canadian Forces Station (CFS) Alert and have installed corner reflectors and GPS buoys on the sea ice north of Alert yesterday using a Kenn Borek Twin Otter. Today and tomorrow, teams from the University College London and the University of Alberta are on the ice making in situ measurements along the profiles between the corner reflectors. Campaign corner reflector from NASA plane (credits: NASA/Digital Mapping System) A DC-3/BT-67 Basler from the Alfred Wegener Institute in Germany participates in the experiment with a towed EM-bird...

Getting started

From Rosie Willatt (UCL) on the ice near Alert, 12 April   Yesterday we started our experiment.  Some of the most important pieces of equipment we’ll use are corner reflectors - if you took a cube of metal and cut one of the corners off, it would form a corner reflector. These are very reflective for radars so we use them as reference points. We constructed wooden stands for the corner reflectors and took them out into the field on skidoos, to a site on the fast ice off the coast a few kilometers from Alert, near a CryoSat track. The temperature was around –30°C and the visibility was not great. We...