CONTENTS 



Page 



PREFACE 1 



PART I: INTRODUCTION 3 



Purpose of Study 5 



Scope of Investigation 5 



PART II: MODEL DEFINITIONS 7 



Basic Statistical Notation 7 



Two -Wave Model 8 



Rayleigh Model • 9 



Modified Rayleigh Model 10 



Additional Parameters 11 



PART III: TEST DATA GENERATION 14 



Inverse Fourier Transform Technique 14 



Unimodal Data 22 



Empirical Probability Estimates 24 



Bimodal Test Data Generation 27 



PART IV: UNIMODAL TESTS 29 



Test Conditions 29 



Test Results 29 



Implications for Spectral Filtering ' 38 



PART V: BIMODAL TESTS 41 



Test Conditions 41 



Test Results 43 



PART VI: CONCLUSION 53 



REFERENCES 56 



APPENDIX A: NOTATION Al 



