CONTENTS

Policy on Intellectual Property Right (IPR)
 1     Executive summary
 2     ATD and radionavigation station deployments at June 2010
 3     Geographical separation between stations
 4     Typical radionavigation station parameters
        4.1     RNAV transmitter characteristics
        4.2     RNAV antenna efficiency
 5     Typical ATD station parameters
 6     Considerations of atmospheric noise
 7     Interference mitigation
 8     ATD receiver sensitivity and maximum permissible interference
 9     VLF propagation modelling
        9.1     VLF dominate mode theory
                  9.1.1     Historical VLF measurements deriving typical attenuation rates for various VLF path profiles
                  9.1.2     Generalizing attenuation as a factor of frequency and ground conductivity
                  9.1.3     Sharing analysis using dominate mode theory by Wait [10]
                  9.1.4     Dominate mode graphs of predictive field-strength levels
                  9.1.5     Dominate mode sharing analysis results
        9.2     Propagation of paths based on published research as a basis for compatibility between radionavigation services and ATD sensor stations
                  9.2.1     United States of America towards the Mediterranean
                  9.2.2     CCIR measurements and empirical modelling
                  9.2.3     Recommendation ITU-R P.684
                  9.2.4     Predictions using Recommendations ITU-R P.368 and ITU-R P.684 combined with results of historical measurements
                  9.2.5     VLF measurements in the Pacific
                  9.2.6     Atlantic measurements by the Naval Ocean Systems Center
                  9.2.7     Results of sharing analysis using published VLF propagation data
                  9.2.8     Published VLF propagation data sharing analysis results
10     Conclusions on sharing between the radionavigation services and ATD sensors of the meteorological aids service