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EARTH-SPACE RAIN ATTENUATION PREDICTION FOR LAGOS AT KU BAND

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EARTH-SPACE RAIN ATTENUATION PREDICTION FOR LAGOS AT KU BAND

5,000.00 3,000.00

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EARTH-SPACE RAIN ATTENUATION PREDICTION FOR LAGOS AT KU BAND

TABLE OF CONTENTS

TITLE PAGE                                                                                                                         i

CERTIFICATION                                                                                                                 ii

DEDICATION                                                                                                                       iii

ACKNOWLEDGEMENT                                                                                                     iv

ABSTRACT                                                                                                                           v

TABLE OF CONTENT                                                                                                         vi

LIST OF TABLES                                                                                                                 ix

LIST OF FIGURES                                                                                                               x

Chapter one

Introduction                                                                                                                1

  • Background 1
  • Rain characteristics 4
  • Geographical dependence of rain attenuation 4
  • Objectives of the project 5
  • Scope of the project 5
  • Summary of project 5

Chapter two

Literature review                                                                                                         6

2.1       Ku band                                                                                                                     6

2.1.1    Ku band allocation for Europe and Africa                                                                 6

2.1.2 Advantages of Ku band over C band                                                                            7

2.1.3    Disadvantages of ku band                                                                                          7

2.2       Rain                                                                                                                             8

2.3       How rain affects the communication                                                                          10

2.4       Attenuation                                                                                                                 10

2.5       Depolarization                                                                                                             12

2.6       Models of rain attenuation statistics                                                                           14

Chapter three

Methodology                                                                                                              15

3.1       Difference between SAM,Bryant model and the ITU-R model                                17

3.1.1    Simple attenuation model (SAM)                                                                               17

3.1.2    Bryant model                                                                                                              19

3.1.3    ITU-R Rec , 618-12 model                                                                                        20

Chapter 4

Results and Discussions                                                                                              25

4.1       Results                                                                                                                        25

4.1.1    Simple attenuation model(SAM)                                                                                25

4.1.2    Bryant model                                                                                                              25

4.1.3    ITU-R REC 618-12 model                                                                                         26

4.2       Discussions                                                                                                                 28

Chapter 5                                   

Conclusions and recommendations                                                                            29

5.1       Conclusions                                                                                                                 29

5.2       Recommendations                                                                                                      29

References                                                                                                                              30

Appendix                                                                                                                                33

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