Directional Noise Floor

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Directional Noise Floor• We use the Maximum Likelihood Method(MLM) to determine directional spectra.• This method essentially looks for wherewaves aren’t to quantify where they are.• With an isotropic noise floor we can getmisleading directional spectra.
0.040.0350.030.0250.020.0150.010.0050Directional Noise FloorDirectional Noise FloorDirectional Spectrum Noise Floor020406080100120140160180200220240260280300320340DirectionEnergy (Normalized)
Page 1 and 2: Recent Developments inWaves Measure
Page 3 and 4: INTRODUCTION
Page 5 and 6: TELEDYNE RD INSTRUMENTS
Page 7 and 8: OVERVIEW
Page 9 and 10: OVERVIEW
Page 11 and 12: H-ADCP Wave Gages Benefits• Deplo
Page 13 and 14: Wide-Band vs. Narrow-BandBroadband
Page 15 and 16: Wideband vs. Narrowband• Our ADCP
Page 17 and 18: Wideband vs. Narrowband• By using
Page 19 and 20: Depth Considerations• Wave energy
Page 21 and 22: Depth Considerations• WHAT WE CHA
Page 23 and 24: Directional Noise Floor• Horizont
Page 25: 0.040.0350.030.0250.020.0150.010.00
Page 29 and 30: Directional Noise Floor
Page 31 and 32: Directional Noise Floor
Page 33 and 34: Noise Floor Squelch• The high-lev
Page 35 and 36: Noise Floor Squelch• We employ sc
Page 37 and 38: Noise Floor Squelch• After analyz
Page 39 and 40: Usage Notes on sinh()/()/cosh()
Page 41 and 42: Usage notes on sinh()/()/cosh()•
Page 43 and 44: Usage notes on sinh()/()/cosh()•
Page 45 and 46: Future areas of Development• More
Page 47 and 48: Conclusions• H-ADCP’s can be us
Page 49: THANK YOU!• Thank You for having

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