Naval Command, Control and Ocean Surveillance Center
RDT&E Division,
San Diego, CA 92152-5001
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NRaD Technical Document 2813

CCIR Report 322 Noise Variation Parameters

D. C. Lawrence

June 1995


Approved for public release; distribution is unlimited


CONTENTS

1. INTRODUCTION

2. CALCULATION METHOD

2.1. PARAMETERS Fam AND sFAM

2.2. PARAMETERS Du, Dl, sDu, AND sDl

3. INTERPRETATION AND USE

3.1. UNCERTAINTY PARAMETERS

3.2. COMBINING PREDICTED DAILY SIGNAL VARIATIONS WITH CCIR-BASED NOISE PARAMETERS

3.3.PLOTS OF CCIR REPORT 322 NOISE PARAMETERS

3.4.INTERPOLATION BETWEEN TIME BLOCKS AND SEASONS

4. REFERENCES

APPENDIX A: NIEMOLLER INTERPOLATION METHOD

Figures

1. Diagram of supporting measured data for the CCIR Report 322 atmospheric noise contour maps

2.Noise contour variation with frequency

3. CCIR 322 noise parameters, winter, 30 kHz

4. CCIR 322 noise parameters, spring, 30 kHz

5. CCIR 322 noise parameters, summer, 30 kHz

6. CCIR 322 noise parameters, autumn, 30 kHz

7. CCIR 322 noise levels for three different locations, winter, 30 kHz

8. CCIR 322 noise levels for three different locations, spring, 30 kHz

9. CCIR 322 noise levels for three different locations, sumer, 30 kHz

10. CCIR 322 noise levels for three different locations, autumn, 30 kHz

11. CCIR 322 noise levels for three different locations, time block: 0 to 4 LT, 30 kHz

12. CCIR 322 noise levels for three different locations, time block: 4 to 8 LT, 30 kHz

13. CCIR 322 noise levels for three different locations, time block: 8 to 12 LT, 30 kHz

14. CCIR 322 noise levels for three different locations, time block: 12 to 16 LT, 30 kHz

15. CCIR 322 noise levels for three different locations, time block: 16 to 20 LT, 30 kHz

16. CCIR 322 noise levels for three different locations, time block: 20 to 24 LT, 30 kHz

A-1. CCIR 322 characterization of mean noise density viewgraph

A-2. CCIR 322 average preserving interpolation viewgraph

A-3. CCIR 322 average preserving quadratic interpolator viewgraph

A-4. CCIR 322 recomputation of interval variance viewgraph

Tables

1. Cumulative probability points of the standardized normal random variable

2. CCIR-332 (& CCIR332-3) statistical parameters (at 30 kHz)

3. CCIR-332-3 values of Fam for three locations: 20N, 60W; 60N, 30W; 35N,30E (noise level at 30 kHz in a bandwidth of 1 kHz, local time)

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