GLONASS ICD Navigational Radiosignal In bands L1, L2 Edition 5.1

Russian Institute of Space Device Engineering
[ Link to russianspacesystems.ru ]

The purpose of the Global Navigation Satellite System GLONASS is to provide unlimited number of air, marine, and any other type of users with all-weather three-dimensional positioning, velocity measuring and timing anywhere in the world or near-earth space.