Radionavigation equipment - 5.7
5.7
Resolution MSC.53(66) - Adopted on 30 May 7996
PERFORMANCE STANDARDS FOR SHIPBORNE GLONASS RECEIVER EQUIPMENT
THE MARITIME SAFETY COMMITTEE,
RECALING resolution A.825(19) by which the Assembly resolved that the functions of adopting performance standards for radio and navigational equipment, as well as amendments thereto, shall be performed by the Maritime Safety Committee on behalf of the Organization,
NOTING resolution A.815(19) by which the Assembly adopted the IMO policy for the recognition and acceptance of suitable radionavigation systems intended for international use to provide ships with navigational position-fixing throughout their voyages.
HAVING IDENTIFIED that the Global Navigation Satellite System (GLONASS) may be a component of the world-wide radionavigation system.
NOTING ALSO that shipborne receiving equipment for the world-wide radio navigation system should be designed to satisfy the detailed requirements of the particular system concerned,
1. ADOPTS the Recommendation on Performance Standards for Shipborne GLONASS Receiver Equipment set out in the annex to the present resolution;
2. INVITES Governments to ensure that GLONASS receiver equipment carried on ships of their flags conforms to performance standards not inferior to those set out in the annex to the present resolution.
Annex
RECOMMENDATION ON PERFORMANCE STANDARDS FOR SHIPBORNE GLONASS RECEIVER EQUIPMENT
1 INTRODUCTION
1.1 The Global Navigation Satellite System (GLONASS) is a space-based positioning velocity, and time system that has three major segments: Space, Control and User. The GLONASS Space Segment will normally be composed of 24 satellites placed in three orbital planes with eight satellites in each plane.
The satellites operate in circular 19,100 km orbits at an inclination angle of 64.8°and with an 11 h and 15 min period. The spacing of satellites in orbit will be arranged so that a minimum of four satellites will be in view to users world-wide, with a position dilution of precision (PDOP) of ≦ 6. Satellites of the system transmit signals on "L" band frequencies. Each satellite has separate lettered frequencies L1 (1602, 5625-1615.5 MHz).
