COMPASSO mission and its iodine clock: outline of the clock design

IF 4.5 1区地球科学 Q1 REMOTE SENSING

GPS Solutions Pub Date : 2023-10-18 DOI:10.1007/s10291-023-01551-0

Frederik Kuschewski, Jan Wüst, Markus Oswald, Tim Blomberg, Martin Gohlke, Jonas Bischof, Alex Boac, Tasmim Alam, André Bußmeier, Klaus Abich, Niklas Röder, Klaus Döringshoff, Jan Hrabina, Miroslava Holá, Jindřich Oulehla, Thilo Schuldt, Claus Braxmaier

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引用次数: 0

Abstract

Abstract One of the limiting factors for GNSS geolocation capabilities is the clock technology deployed on the satellites and the knowledge of the satellite position. Consequently, there are numerous ongoing efforts to improve the stability of space-deployable clocks for next-generation GNSS. The COMPASSO mission is a German Aerospace Center (DLR) project to demonstrate high-performance quantum optical technologies in space with two laser-based absolute frequency references, a frequency comb and a laser communication and ranging terminal establishing a link with the ground station located in Oberpfaffenhofen, Germany. A successful mission will strongly improve the timing stability of space-deployable clocks, demonstrate time transfer between different clocks and allow for ranging in the mm-range. Thus, the technology is a strong candidate for future GNSS satellite clocks and offers possibilities for novel satellite system architectures and can improve the performance of scientific instruments as well. The COMPASSO payload will be delivered to the international space station in 2025 for a mission time of 2 years. In this article, we will highlight the key systems and functionalities of COMPASSO, with the focus set to the absolute frequency references.

查看原文本刊更多论文

指南针的使命及其碘钟:钟的设计大纲

卫星上部署的时钟技术和对卫星位置的了解是制约GNSS地理定位能力的因素之一。因此，有许多正在进行的努力来提高下一代GNSS的空间可部署时钟的稳定性。COMPASSO任务是德国航空航天中心(DLR)的一个项目，通过两个基于激光的绝对频率参考，一个频率梳和一个激光通信和测距终端，在空间中演示高性能量子光学技术，并与位于德国Oberpfaffenhofen的地面站建立联系。一次成功的任务将大大提高空间可部署时钟的定时稳定性，演示不同时钟之间的时间传递，并允许在毫米范围内进行测距。因此，该技术是未来GNSS卫星时钟的有力候选，为新型卫星系统架构提供了可能性，也可以提高科学仪器的性能。罗盘有效载荷将于2025年交付给国际空间站，任务时间为2年。在本文中，我们将重点介绍COMPASSO的关键系统和功能，重点放在绝对频率参考上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

GPS Solutions 工程技术-遥感

CiteScore

8.10

自引率

12.20%

发文量

138

审稿时长

3.1 months

期刊介绍： GPS Solutions is a scientific journal. It is published quarterly and features system design issues and a full range of current and emerging applications of global navigation satellite systems (GNSS) such as GPS, GLONASS, Galileo, BeiDou, local systems, and augmentations. Novel, innovative, or highly demanding uses are of prime interest. Areas of application include: aviation, surveying and mapping, forestry and agriculture, maritime and waterway navigation, public transportation, time and frequency comparisons and dissemination, space and satellite operations, law enforcement and public safety, communications, meteorology and atmospheric science, geosciences, monitoring global change, technology and engineering, GIS, geodesy, and others. GPS Solutions addresses the latest developments in GNSS infrastructure, mathematical modeling, algorithmic developments and data analysis, user hardware, and general issues that impact the user community. Contributions from the entire spectrum of GNSS professionals are represented, including university researchers, scientists from government laboratories, receiver industry and other commercial developers, public officials, and business leaders.