CONTENTS

�1���� Introduction
�2���� Active sensor types and typical characteristics
�3���� Typical orbits
�4���� Active sensors interference and performance criteria
�5���� Sharing considerations for active sensors
������� 5.1���� Existing ITU-R Recommendations and Reports
������� 5.2���� Power flux-density levels due to active spaceborne sensors
������� 5.3���� Dynamics of antenna coupling with systems of other services
�6���� Definition of parameters
�7���� Parameters of typical systems
������� 7.1���� Typical parameters of active sensors operating in the 432-438 MHz band
������� 7.2���� Typical parameters of active sensors operating in the 1 215-1 300 MHz band
������� 7.3���� Typical parameters of active sensors operating in the 3 100-3 300 MHz band
������� 7.4���� Typical parameters of active sensors operating in the 5 250-5 570 MHz band
������� 7.5���� Typical parameters of active sensors operating in the 8 550-8 650 MHz band
������� 7.6���� Typical parameters of active sensors operating in the 9 200-10 400 MHz band
������� 7.7���� Typical parameters of active sensors operating in the 13.25-13.75 GHz band
������� 7.8���� Typical parameters of active sensors operating in the 17.2-17.3 GHz band
������� 7.9���� Typical parameters of active sensors operating in the 24.05-24.25 GHz band
������ 7.10���� Typical parameters of active sensors operating in the 35.5-36.0 GHz band
������ 7.11���� Typical parameters of active sensors operating in the 78-79 GHz band
������ 7.12���� Typical parameters of active sensors operating in the 94-94.1 GHz band
������ 7.13���� Typical parameters of active sensors operating in the 133.5-134 GHz band
������ 7.14���� Typical parameters of active sensors operating in the 237.9-238 GHz band