CONTENTS 



Page 



I. INTRODUCTION 1 



II. SOURCE-PATH-RECEIVER MODEL 5 



A. Source 5 



B. Path 6 



C. Receiver 6 



III. ASSUMPTIONS FOR APPLICATION OF THE MODEL 8 



A. Source 8 



B. Sound Propagation 10 



1. Spreading Loss 10 



2. Attenuation Loss 11 



C. Receiver 16 



D. Ambient Noise 22 



IV. DATA AND CALCULATIONS 23 



A. Data 24 



1. Source Level (SL)--Three Sources ..... 24 



2. Minimum Detectable Signal (MDS = NL + CR) 25 



3. Calculation of Detection Range 27 



V. DISCUSSION 27 



VI. CONCLUSIONS 30 



VII. RECOMMENDATIONS 33 



G-2 



