Inter-satellite service



 Inter-satellite service  (also: inter-satellite radiocommunication service) is – according to Article 1.22 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as A radiocommunication service providing links between artificial satellites.

Classification
In accordance with ITU Radio Regulations (article 1) variations of this radiocommunication service are classified as follows:
 * Fixed service (article 1.20)
 * Fixed-satellite service (article 1.21)
 * Inter-satellite service (article 1.22)
 * Earth exploration-satellite service (article 1.51)
 * Meteorological-satellite service (article 1.52)

Inter-satellite radiocommunications satellites

 * U.S. Tracking and Data Relay Satellite
 * Artemis (satellite)
 * European Data Relay System
 * Indian Data Relay Satellite System
 * Luch (satellite) (Russia)
 * Tianlian I (China)

Commercial satellite constellations with inter-satellite communication

 * Iridium
 * Starlink
 * Kuiper Systems

References / sources

 * International Telecommunication Union (ITU)
 * Earth exploration-satellite service. ITU, Genf 2011. ISBN 92-61-13761-X