CONTENTS

Acquisition, presentation and analysis of data in studies of tropospheric propagation     2
Policy on Intellectual Property Right (IPR)     ii
RECOMMENDATION  ITU-R  P.311-13     1
Acquisition, presentation and analysis of data in studies of tropospheric propagation     1
Annex 1  Data banks to support evaluation of prediction methods     1
1 Introduction  2
2 Responsibilities and updates  3
3 Acceptance criteria  3
4 Testing criteria for comparing prediction methods  4
        4.1 General considerations  4
                  4.1.1 Best performance in terms of testing variable  4
                  4.1.2 �Physical basis� of the method chosen  4
                  4.1.3 �Simplicity�  5
        4.2 Testing variable for comparing rain attenuation predictions  5
                  4.2.1 Procedure  5
        4.3 Testing method for comparing fade duration predictions  6
                  4.3.1 Principle of the method  6
                  4.3.2 Procedure  6
        4.4 Testing method for comparing fade slope predictions  7
                  4.4.1 Principle of the method  7
                  4.4.2 Procedure  7
5 List of the data banks of Radiocommunication Study Group 3 concerning tropospheric propagation     8
        5.1 Part I: Terrestrial line-of-sight path data  8
        5.2 Part II: Earth-space path data  8
        5.3 Part III: Terrestrial trans-horizon path and rain scatter data  9
        5.4 Part IV: Radiometeorological data  9
        5.5 Part V: Terrestrial land mobile data  9
        5.6 Part VI: Terrestrial point-to-area data  9
        5.7 Part VII: Data for mobile-satellite services  9
        5.8 Part VIII: Vegetation and building data  9
        5.9     Part IX: Noise  9