Policy on Intellectual Property Right (IPR)
1 Overview
2 Prediction of A2 and NAVTEX ranges
2.1 IMO performance criteria
2.2 Achieving the required quality
of signal
2.2.1 The effect of
received noise
2.2.2 C/N
required for single sideband (SSB) radiotelephony
2.2.3 C/N
required for NAVTEX broadcasts
2.3 Accounting for ships topside
noise
2.4 Determination of external noise
factor, Fa, for the required availability
2.5 Accounting for propagation by
groundwave
2.5.1 Introduction
2.5.2 Proof of performance
tests
2.5.3 Determination of
extent of A2 service area
2.5.4 Determination of the
range achieved using NAVTEX operation
3 Protection of A2 watch frequency
3.1 Impact of site separation on
system performance
3.2 Estimating the level of the
interference field
3.3 Required adjacent channel
selectivity
3.4 Protection from adjacent channel
interference
3.5 Protection from transmitter
sideband noise
3.6 Co-site operation
4 Software requirements
4.1 Noise calculation
4.2 Intermodulation