Precision differential GPS for cryospheric applications

适用于冰冻圈应用的精密差分 GPS

• 批准号: 405918-2011
• 负责人: Sharp, Martin
• 金额: $ 3.12万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=488818
• 关键词: Precision; differential; GPS; cryospheric; applications

Funds are requested to purchase a Leica Geosystems VIVA GNSS differential GPS surveying system to replace a Leica System 500 GPS that Leica will no longer support. The new VIVA GPS system will be used primarily to support the NSERC funded glaciological research program of Dr Martin Sharp, which focuses on determining the rates, causes and mechanisms of glacier change in Arctic Canada, and their consequences for global sea level. It will also be used in the NSERC funded programs of Drs Duane Froese (focused on permafrost characterization in the Yukon) and Jeffrey Kavanaugh (focused on process-based studies of glacier dynamics in Alaska and British Columbia). The System 500 GPS receivers have become essential tools for our research, having been used extensively in the research of 7 PDFs and 13 graduate students at the University of Alberta since 2001. In 2009, Leica released a firmware update that enabled the System 500 to continue functioning after changes were made to the GPS standard, but announced that this would be the last such update offered. As the System 500 hardware can no longer keep up with changes to the overall Global Navigation Satellite Systems (GNSS) architecture, Leica have decided to stop supporting this equipment. It will become unusable the next time we have an equipment failure or there is a change in the GPS standard. The GNSS is undergoing a phase of expansion and maturation. It no longer consists solely of the United States NAVSTAR GPS satellite system. Three other agencies are deploying constellations of navigation satellites: Russia (GLONASS), the European Union (Galileo), and China (COMPASS). This expansion of GNSS will both improve the accuracy of position measurements, and reduce measurement times. Access to these benefits requires updated hardware capable of utilizing the data from the expanded GNSS constellation. We urgently need to replace our existing equipment both because we are at serious risk of losing our GPS surveying capability completely, and because the proposed new equipment will offer substantial performance improvements that will increase the efficiency of our field programs and produce higher quality survey results.

要求资金购买Leica Geosystems Viva GNSS差异GPS测量系统，以替换Leica系统500 GPS，Leica将不再支持。 新的VIVA GPS系统将主要用于支持NSERC资助的Martin Sharp博士的冰川研究计划，该计划的重点是确定加拿大北极加拿大北极变化的速率，原因和机制及其对全球海平面的后果。它也将用于NSERC资助的Drs Duane Froese博士计划（侧重于育空地区的多年冻土表征）和Jeffrey Kavanaugh（重点介绍了基于过程的阿拉斯加和不列颠哥伦比亚省的冰川动力学研究）。该系统500 GPS接收器已成为我们研究的重要工具，该工具已被广泛用于艾伯塔大学大学的7个PDF和13名研究生的研究。2009年以来，Leica于2009年发布了固件更新，使System 500在GPS标准进行了更改后继续运行，但宣布这将是最后的此类更新。由于系统500硬件无法再跟上整体全球导航卫星系统（GNSS）体系结构的更改，因此Leica决定停止支持此设备。下次我们发生设备故障或GPS标准会发生变化时，它将变得无法使用。 GNSS正在经历扩展和成熟阶段。它不再仅由美国NAVSTAR GPS卫星系统组成。其他三个机构是部署导航卫星星座：俄罗斯（格洛纳斯），欧盟（伽利略）和中国（指南针）。 GNSS的这种扩展都将提高位置测量的准确性，并减少测量时间。访问这些好处需要更新的硬件，才能利用扩展的GNSS星座中的数据。我们迫切需要更换现有的设备，因为我们面临完全失去GPS测量能力的严重风险，并且因为拟议的新设备将提供大量的性能改进，以提高我们的现场计划的效率并产生更高质量的调查结果。