Phase-sensitive FMCW radar system for high-precision Antarctic ice shelf profile monitoring
Phase-sensitive FMCW radar system for high-precision Antarctic ice shelf profile monitoring
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DOI：
10.1049/iet-rsn.2013.0053
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发表时间：
2014-08-01
影响因子：
1.7
通讯作者：
Corr, Hugh
中科院分区：
文献类型：
--
作者：
Brennan, Paul V.;Lok, Lai Bun;Corr, Hugh
冰架环绕着南极大陆的大部分地区，尽管厚度高达2公里，但很容易受到气候变化的影响。由于它们在帮助控制冰盖对海平面变化的贡献方面的作用，人们对测量它们融入海洋的速度非常感兴趣。这项研究描述了开发和部署一种穿透冰层的相敏FMCW雷达，该雷达足够坚固，功耗足够低，可以作为独立仪器在整个南极冬季运行，但具有在这一异常苛刻的环境中探测冰架厚度非常缓慢的变化所需的稳定性和毫米精度。描述了许多优雅的处理技术，以实现可靠、高精度的性能，并给出了从南极洲拉森-C冰架获得的现场数据的结果。
Ice shelves fringe much of the Antarctic continent, and, despite being up to 2 km thick, are vulnerable to climate change. Owing to their role in helping to control the ice sheet contribution to sea level change there is great interest in measuring the rate at which they are melting into the ocean. This study describes the development and deployment of an ice-penetrating phase-sensitive FMCW radar, sufficiently robust and with sufficiently low-power consumption to be run through the Antarctic winter as a standalone instrument, yet with the stability and mm-precision needed to detect the very slow changes in ice shelf thickness in this exceptionally demanding environment. A number of elegant processing techniques are described to achieve reliable, high-precision performance and results presented on field data obtained from the Larsen-C ice shelf, Antarctica.