A radionavigation-satellite service (RNSS) is "a radiodetermination-satellite service used for the purpose of radionavigation. This service may also include feeder links necessary for its operation".
ITU Radio Regulations (article 1) classifies radiocommunication services as:
- Radiodetermination service (article 1.40)
- Radiodetermination-satellite service (article 1.41)
- Radionavigation service (article 1.42)
- Examples of RNSS use
- Augmentation system GNSS augmentation
- Automatic dependent surveillance – broadcast
- BeiDou Navigation Satellite System (BDS)
- GALILEO, European GNSS
- Global Positioning System (GPS), with Differential GPS (DGPS)
- Quasi-Zenith Satellite System (QZSS)
The allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations (edition 2012).
To improve harmonisation in spectrum utilisation, most service allocations are incorporated in national Tables of Frequency Allocations and Utilisations within the responsibility of the appropriate national administration. Allocations are:
- primary: indicated by writing in capital letters
- secondary: indicated by small letters
- exclusive or shared utilization: within the responsibility of administrations.
|Allocation to services|
|Region 1||Region 2||Region 3|
|5 000–5 010 MHz|
- ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.43, definition: radionavigation-satellite service
- ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations