Compact airborne C-band radar sounder

Author
Øyan, Mats Jørgen
Hamran, Svein-Erik
Damsgård, Leif
Berger, Tor
Date Issued
2014
Keywords
Termset Emneord::Bredbånd
Termset Emneord::Ubemannede luftfarkoster
Termset Emneord::Radar
Termset Emneord::Snømålinger
Permalink
http://publications.ffi.no/handle/123456789/414
DOI
10.1109/TGRS.2013.2296074
Collection
Articles
Description
Øyan, Mats Jørgen; Hamran, Svein-Erik; Damsgård, Leif; Berger, Tor. Compact airborne C-band radar sounder. IEEE Transactions on Geoscience and Remote Sensing 2014 ;Volum 52.(10) s. 6326-6332
1154343.pdf
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Abstract
We describe a lightweight wideband C-band radar sounder, which is designed for use in a small unmanned aerial vehicle, primarily for measuring snow and ice. The waveform used is a gated frequency modulated continuous wave, which enables transmission at low power with relatively high energy in the compressed pulse. Gating allows use of a single antenna, reducing the influence of the direct wave on the systems' dynamic range. The radar operates at 5.3-GHz center frequency and has a bandwidth of 1 GHz, for a nominal range resolution of 15 cm in air or 12 cm in snow. Laboratory testing and airborne acquisition of data over the glacier Hardangerjøkulen show that the radar appears to work well for the intended purpose of measuring snow layer thickness.
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