CONTENTS

Policy on Intellectual Property Right (IPR)
Annex 1
�1���� Introduction
�2���� Complex permittivity
������� 2.1���� Layered ground
�3���� Penetration depth
�4���� Factors determining the effective electrical characteristics of soil
������� 4.1���� Nature of the soil
������� 4.2���� Moisture content
������� 4.3���� Temperature
������� 4.4���� Seasonal variation
�5���� Complex relative permittivity prediction methods
������� 5.1���� Water
����������������� 5.1.1���� Pure water
����������������� 5.1.2���� Sea water
����������������� 5.1.3���� Ice
������� 5.2���� Soil
������� 5.3���� Vegetation
����������������� 5.3.1���� Above freezing temperatures
����������������� 5.3.2���� Below freezing temperatures
�6���� Emissivity
�7���� Isotropic emissivity of the ocean
Attachment to Annex 1� Electrical properties expressed as permittivity and conductivity� as used in Recommendations ITU-R P.368 and ITU-R P.832
�1���� Introduction