Supporting NASA Artemis 1 mission with JAXA Uchinoura station [International Communications Satellite Systems Conference]
Supporting NASA Artemis 1 mission with JAXA Uchinoura station [International Communications Satellite Systems Conference]
- Author(s): T. Pham ; H. Takeuchi ; A. Tomiki
- DOI: 10.1049/cp.2019.1223
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- Author(s): T. Pham ; H. Takeuchi ; A. Tomiki Source: Advances in Communications Satellite Systems. 37th International Communications Satellite Systems Conference (ICSSC-2019), 2019 page (8 pp.)
- Conference: Advances in Communications Satellite Systems. 37th International Communications Satellite Systems Conference (ICSSC-2019)
- DOI: 10.1049/cp.2019.1223
- ISBN: 978-1-83953-499-7
- Location: Okinawa, Japan
- Conference date: 29 Oct.-1 Nov. 2019
- Format: PDF
This chapter presents an ongoing effort in preparing JAXA Uchinoura station support to the Artemis 1 mission, scheduled for launch in late 2020. The system involves three key participants: JAXA ground station at Uchinoura, the Deep Space Network (DSN) components at the Jet Propulsion Laboratory, California, and the Artemis 1 mission navigation at the NASA Johnson Space Center, Texas. Demonstration of Uchinoura station support to the future Artemis signal relies on the use of a low-cost, highly-portable software-defined radio (SDR) test equipment as well as the tracking of the Lunar Reconnaissance Orbiter (LRO) spacecraft. Using the SDR equipment, we validated the compatibility of signal format between the Artemis flight radio and the Uchinoura ground station without having to send the flight equipment to the station. By tracking an ongoing operational spacecraft such as LRO, we were able to calibrate the performance of the system in real operational conditions. The measured Doppler noise of 0.03 Hz (1-sigma), or 0.002 m/s range rate at S-band, for Uchinoura station is deemed suitable to the Artemis 1 mission navigation needs. This chapter also discusses the test equipment capability and its performance. In addition to being low cost, the equipment offers many advantages compared to the traditional full-scaled test signal simulator. Chief among them is portability making system easy to set up and transport, and the fidelity of the test signal that it captures from spacecraft flight equipment. Some of the lessons learned, such as internal frequency stability of the test signal, are also reflected.
Inspec keywords: space vehicles; satellite ground stations; artificial satellites; software radio; space communication links
Subjects: Aerospace instrumentation and equipment; Space communication systems; Satellite communication systems
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