HR: 0800h
AN: C31B-0317    [Abstracts]
TI: RADARSAT Antarctic Mapping System 2 - System Overview
AU: * Wu, X
EM: Xiaoqing.Wu@vexcel.com
AF: Vexcel Corporation, 1690 38th Street, Boulder, CO 80301 United States
AU: Canande, R
EM: Richard.Carande@vexcel.com
AF: Vexcel Corporation, 1690 38th Street, Boulder, CO 80301 United States
AU: Jezek, K
EM: jezek@frosty.mps.ohio-state.edu
AF: Byrd Polar Research Center, Ohio State University, 1090 Carmack Rd, Columbus, OH 43210 United States
AU: Farness, K
EM: kfn@frosty.mps.ohio-state.edu
AF: Byrd Polar Research Center, Ohio State University, 1090 Carmack Rd, Columbus, OH 43210 United States
AU: Miller, J
EM: James.Miller@vexcel.com
AF: Vexcel Corporation, 1690 38th Street, Boulder, CO 80301 United States
AB: The Modified Antarctic Mapping Mission (MAMM), the second mission of the RADARSAT 1 Antarctic Mapping Project, occurred during the fall of 2000, after the first Antarctic Mapping Mission was successfully completed in 1997 and yielded the first high-resolution radar mosaic of Antarctica. The two goals of the MAMM were to produce high-resolution image mosaics of Antarctica north of 80$^{o}$S latitude and to measure the surface velocity field over coherent and/or trackable areas of the ice sheet north of 80$^{o}$S latitude for ice dynamics studies. The Radarsat Antarctic Mapping System 2 (RAMS2) is a custom-designed processing system to convert the MAMM data acquired during the fall of 2000 into map-quality image mosaics, coherence mosaics and velocity fields. The system starts with the processed single look complex (SLC) data sets and has two processing phases: image mosaic phase and interferometric processing phase. Image mosaic phase includes data ingest, image mosaic and coherence mosaic. Interferometric processing phase includes frame-based phase 1 processing, data take-based phase 2 processing and block-based phase 3 velocity mosaic. The frame-based interferometric processing includes image registration and interferogram generation for each framed SLC data pair. The phase 2 interferometric processing mosaics all the framed interferograms of each data take into one big mosaiced interferogram and do interferogram filtering, phase unwrapping and velocity field estimation on the data take bases. The phase 3 velocity mosaic produces block-based velocity maps by mosaicing dozens or hundreds of mosaiced interferograms. In this paper we present the system overview of both the image mosaic and interferometric processing phases, describe algorithms and innovations involved in the interferometric processing phase and the products RAMS2 provides for the science community. Some examples of coherence mosaics and velocity mosaics are also presented.
UR: http://www.vexcel.com
DE: 6969 Remote sensing
DE: 1827 Glaciology (1863)
SC: Cryosphere [C]
MN: 2004 AGU Fall Meeting