Global Re-deployment of the Envisat Asar Transponders for around Orbit Calibration
نویسندگان
چکیده
Following the commissioning phase of the Advanced Synthetic Aperture Radar (ASAR) instrument on-board EnviSat decision was taken to re-deploy three of the existing four ASAR Transponders, specially procured for this instrument, from locations within The Netherlands to sites all over the world. The Re-Deployment of the ASAR Transponders describes a major activity in order to maintain the high level of ASAR calibration. Furthermore, for the first time, it allows ESA to perform around orbit calibration of the EnviSat ASAR instrument. We present the initial and final Deployment of all four EnviSat ASAR Transponders and explain the objectives and the strategy together with the challenges faced installing the ASAR Transponder instruments at very remote locations including Indonesia and the Arctic. The excellent results of the latest calibration figures show the success of this campaign.
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