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The World’s First DTN Communications Experiment in the Lunar Orbit using Korea Pathfinder Lunar Orbiter (Danuri)
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- Authors
- Byoung-Sun Lee, Jin-Ho Jo, Kyung-Rak Lee, Sinae Ji, Cheol Oh Jeong
- Issue Date
- 2023-10
- Citation
- International Astronautical Congress (IAC) 2023, pp.1-7
- Language
- English
- Type
- Conference Paper
- Abstract
- The Korea Pathfinder Lunar Orbiter (KPLO), or Danuri, is the first Korean robotic lunar probe to carry out a lunar observation mission at a nominal orbiting altitude of 100 km from the Moon. The KPLO spacecraft consists of the main body of the orbiter, propulsion systems, tracking systems, three communications antennas, two solar arrays, and six payloads. The Delay/Disruption Tolerant Network Payload (DTNPL) is a space internet device developed by the Electronics and Telecommunications Research Institute (ETRI). DTN is a type of interplanetary internet device designed to handle delays and disconnections that occur frequently when utilizing internet technology in space. DTN is a method modified to fit the space communication environment by adding Bundle Protocol (BP), a store-andforward function that is not present in the existing terrestrial internet. DTN technology is an internationally standardized technology and will become a major means of communication network for future space exploration. The technology demonstration includes Consultative Committee for Space Data Systems (CCSDS) File Delivery Protocol (CFDP), Asynchronous Message Service (AMS), and Bundle Streaming Service (BSS). Network nodes for space internet technology demonstration are located in KPLO, NASA, KARI, and ETRI. The four seasons ETRI campus photos are used for the demonstration of file delivery. A real-time streaming of K-pop band BTS 'Dynamite' MV from KPLO is one of the technology demonstrations of BSS. The DTN communication experiment was very successful when KPLO was in Trans-Lunar Cruise(TLC) more than 1 million km from the Earth and when KPLO was in Lunar mission orbit about 380,000 km from the Earth.
- KSP Keywords
- Carry out, Communication Environment, Data system, Delay/disruption tolerant network, File delivery protocol, Internet technology, Lunar orbit, Lunar probe, Network node, Real-Time Streaming, Research institute