Performance characterization of a new, low-cost multi-GNSS instrument for the cryosphere

IF 2.8 3区 地球科学 Q2 GEOGRAPHY, PHYSICAL
Derek James Pickell, Robert Lyman Hawley
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Abstract

We developed a multi-frequency, multi-Global Navigation Satellite System (GNSS) positioning instrument optimized for autonomous applications in the cryosphere. At lower power requirements and a fraction of the cost and weight compared to commercially available options, this instrument simplifies field usage and associated logistics. In this paper, we assess several baseline aspects of performance in a polar environment relative to geodetic receivers commonly used for glaciological applications. Evaluations of precision and relative accuracy of positioning show millimeter to centimeter-level (‘geodetic-grade’) quality of this instrument, making it a competitive alternative for GNSS glaciological and geophysical applications such as monitoring surface elevation change and ice flow. An array of these instruments, tested in the field on the Greenland Ice Sheet, also demonstrated robustness throughout the polar winter and met power and reliability requirements.

用于冰冻圈的新型低成本多重全球导航卫星系统仪器的性能鉴定
我们开发了一种多频率、多全球导航卫星系统(GNSS)定位仪器,专为冰冻圈中的自主应用而优化。与市面上的产品相比,该仪器的功耗更低,成本和重量仅为它们的一小部分,从而简化了野外使用和相关的后勤工作。在本文中,我们评估了极地环境中相对于冰川学应用中常用的大地测量接收器的性能的几个基准方面。对定位精度和相对准确度的评估表明,该仪器具有毫米到厘米级("大地测量级")的质量,使其成为监测地表高程变化和冰流等全球导航卫星系统冰川学和地球物理应用中具有竞争力的替代品。在格陵兰冰原上进行实地测试的这些仪器阵列在整个极地冬季也表现出坚固耐用的特性,并满足了对功率和可靠性的要求。
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来源期刊
Journal of Glaciology
Journal of Glaciology 地学-地球科学综合
CiteScore
5.80
自引率
14.70%
发文量
101
审稿时长
6 months
期刊介绍: Journal of Glaciology publishes original scientific articles and letters in any aspect of glaciology- the study of ice. Studies of natural, artificial, and extraterrestrial ice and snow, as well as interactions between ice, snow and the atmospheric, oceanic and subglacial environment are all eligible. They may be based on field work, remote sensing, laboratory investigations, theoretical analysis or numerical modelling, or may report on newly developed glaciological instruments. Subjects covered recently in the Journal have included palaeoclimatology and the chemistry of the atmosphere as revealed in ice cores; theoretical and applied physics and chemistry of ice; the dynamics of glaciers and ice sheets, and changes in their extent and mass under climatic forcing; glacier energy balances at all scales; glacial landforms, and glaciers as geomorphic agents; snow science in all its aspects; ice as a host for surface and subglacial ecosystems; sea ice, icebergs and lake ice; and avalanche dynamics and other glacial hazards to human activity. Studies of permafrost and of ice in the Earth’s atmosphere are also within the domain of the Journal, as are interdisciplinary applications to engineering, biological, and social sciences, and studies in the history of glaciology.
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