Directional Noise Floor

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Wideband vs. Narrowband• When H-ADCP was created it was desired to extendthe profiling range as far from the measurementplatform as possible. This way the impacts of theplatform could be minimized.• Consider a center-core Drill Rig with an ADCPmounted on the core. We don’t want to bemeasuring currents as they flow around the core,rather we want to be measuring what they would bein the absence of the Rig.• The same goes for Waves. We want to stay out ofthe “shadow” of the platform.
Wideband vs. Narrowband• Our ADCP’s have two Broadband Modes.• Wide-Band Broadband (WB0)– Data has a lower variance – measurement is “quieter”– Lower profiling range• Narrow-Band Broadband (WB1)– Data has a higher variance – measurement is more noisy– Higher profiling range– (Still Broadband though)(see next chart…)
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: Wide-Band vs. Narrow-BandBroadband
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 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

Directional Noise Floor

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