Directional Noise Floor

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Usage notes on sinh()/()/cosh()• The solution is to express the sinh() andcosh() as exponentials using:cosh(x) = (e x + e -x )/2sinh(x) = (e x – e -x )/2• By factoring out terms we are left with:F = (exp(kz) + exp(-2kh - kz))/(1 - exp(-2kh))
Usage notes on sinh()/()/cosh()• We are using the standard c++ double precisionfloating-point libraries and Microsoft VS-2005.• It appears that the exp() routine is more robustthan the sinh() and cosh() routines. It convergesto a solution much more quickly.• If you are using the hyperbolic trig functions inyour routines – take close note to the magnitudeof the arguments passed!!
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 and 26: 0.040.0350.030.0250.020.0150.010.00
Page 27 and 28: 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: 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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