Optical Clocks for Chronometric Levelling (A04)

用于精密校平的光学钟 (A04)

• 批准号: 456822008
• 金额: --
• 依托单位: Physikalisch-Technische Bundesanstalt (PTB)
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/456822008?language=en
• 关键词: Optical; Clocks; Chronometric; Levelling; A04

According to Einstein’s theory of general relativity, clocks in a gravitational potential tick slower than outside. We will use a self-developed transportable Sr lattice clock and an Al+ quantum logic clock to prove the feasibility of chronometric levelling by demonstrating off-campus height measurements with comparable or better resolution than geometric levelling and the GNSS/geoid approach can presently achieve. Moreover, we will apply our techniques to other geodetic issues relevant in TerraQ, such as the monitoring of water storage.

根据爱因斯坦的广义相对论，引力势中的时钟比外面的时钟慢。我们将使用一个自主开发的便携式锶晶格时钟和一个铝+量子逻辑时钟，证明计时水准测量的可行性，通过演示校外高度测量与几何水准测量和GNSS/大地水准面方法目前可以实现的分辨率相当或更好。此外，我们将把我们的技术应用于TerraQ中的其他相关大地测量问题，例如水储存的监测。