CONTENTS

Policy on Intellectual Property Right (IPR)
 1     Introduction
 2     Regulatory information
 3     Characteristics of systems operating in the frequency band 77.5‑78 GHz
        3.1     System characteristics of amateur service stations
        3.2     System characteristics of amateur satellite service stations
        3.3     Characteristics of radio astronomy stations
        3.4     System characteristics of space research service stations
 4     Systems characteristics of automotive radars
 5     Basic equations for automotive radar power
        5.1     Choice of the propagation model
        5.2     Atmospheric attenuation
                  5.2.1     Atmospheric attenuation in wet air at standard pressure
                  5.2.2     Atmospheric attenuation in dry air at higher elevations applicable to studies of sharing with operations of the radio astronomy service
 6     Sharing Studies between automotive radar and the systems of the services having allocation in the frequency band 77.5-78 GHz
        6.1     Sharing studies with the amateur and amateur-satellite services
                  6.1.1     Characteristics of the amateur service systems
                  6.1.2     Characteristics of the amateur satellite service systems
                  6.1.3     Sharing studies
        6.2     Sharing studies with space research (space-to-Earth) service
        6.3     Sharing studies with radio astronomy service
                  6.3.1     Sharing criteria and available Reports
                  6.3.2     Choice of the propagation model for sharing studies with the radio astronomy service
                  6.3.3     List of radio astronomy service station sites in the world that use or will potentially use the 78 GHz frequency band
                  6.3.4     Sharing studies
                  6.3.5     Conclusion of sharing studies with the radio astronomy stations
 7     Compatibility studies in the adjacent frequency bands 76-77.5 and 78‑81 GHz
 8     Conclusions
Annex A  Automotive radar characteristics
Annex B  Atmospheric attenuation of radio waves
Annex C  Required output power of automotive radar versus detection distance
 1     Required output power of automotive radar in the rain conditions
 2     Required detection distance for useful breaking
        2.1     Scenarios to be considered
        2.2     Required detection distance for Case A (car to car)
        2.3     Required detection distance for Case B (car to pedestrian)
Annex D  List of radio astronomy service station sites in the world that use or will potentially use the 78 GHz frequency band