A Large-Scale Ku-Band Backscatter Model of the
Abstract — The megadune region of East-Antarctica has a unique topology consisting of microrelief features, sastrugi and long, coherent snow dunes. The azimuth modulation signature in this region is characterized by higher backscatter, less modulation, and more local maxima than in a nearby non-dune...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.391.8338 http://www.mers.byu.edu/long/papers/conf/IGARSS2006_Lambert.pdf |
| Summary: | Abstract — The megadune region of East-Antarctica has a unique topology consisting of microrelief features, sastrugi and long, coherent snow dunes. The azimuth modulation signature in this region is characterized by higher backscatter, less modulation, and more local maxima than in a nearby non-dune region. We develop a fourth-order best-fit model to describe the azimuth modulation and apply it independently to two disjoint portions of the megadune region. The locations of the vertices of these boundaries are listed in table I. The regions are not continued farther south because visual images show that the dunes there are less coherent. The areas of the study regions are 27,200 km 2 in the west field and 77,700 km 2 in the east field. We also define a “non-dune field ” outside the megadune region. which is shown in black in Figure 1. I. |
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