A Moored Profiling Instrument*

Estimation of downward irradiance attenuation from a single moored instrument

-A method for estimating the diffuse attenuation coefficient for downward irradiance, Kd(2), from time-series data of irradiance and sea-surface wave elevation is presented. Data acquisition is accomplished with a fixed-depth, single moored instrument system. K d (2) is obtained as a ratio of the standard deviation of natural logarithms of irradiance to the standard deviation of wave elevation....

Identifying “Skylites” for AUV Operations under Pack Ice: Insights from Ice-draft Profiling by Moored Sonar

The past decade has seen a remarkable evolution of sea-floor-based ice-draft profiling capabilities. Efforts have progressed from an original Beaufort Sea deployment of a single upward-looking acoustic echo sounder to the almost routine present-day positionings of special-purpose profiler units which operate in conjunction with adjacent current profiling and ice drift measurement instruments. T...

A pipe-profiling adapter for CCTV inspection cameras: development of a pipe-profiling instrument

The principle of the optical section has been used to develop a profiling attachment for CCTV pipe inspection cameras. A light source, placed in front of the camera, projects a ring of light onto the pipe wall, which is then viewed by the camera. Any distortion in the pipe wall will be made visible by the light ring. The CCTV image is digitized by an electronic frame grabber and the light ring ...

Station-keeping Simulation of a Non-moored Wec

CyberChrome White Paper: The Importance of Instrument Profiling

Introduction Today’s global supply chains, dispersed workforce, and ever-changing technologies bring a unique set of challenges to the color measurement industry. Employees in different countries or even those in the same room can get different readings on the same color samples, leading to frustration, costly recalibration and a high rate of rejected samples. The problem isn’t limited to those...