Improving Glider Missions with Integrated AD2CP Workshop

iRobot Corporation and Nortek will provide a free workshop during Oceans 2012 Hampton Roads, VA. This workshop will highlight technical features of the iRobot Seaglider and the integrated Nortek AD2CP.
Improving Glider Missions with Integrated AD2CP Workshop

iRobot Seaglider with Nortek ADCP

Eventbrite - Improving Glider Missions with Integrated ADCP

iRobot Corporation (IRBT) and Nortek AS will provide a free workshop during Oceans 2012, Hampton Roads, VA. This workshop “Improving Glider Missions with Integrated AD2CP” (Monday, Oct 15th, 2012 at 1 - 5 PM) will highlight technical features of the autonomous underwater vehicle (AUV), iRobot Seaglider and the Nortek AD2CP. Workshop topics will include a review of the married technologies, current and future applications of unmanned mission for researchers and industry. 

Autonomous gliders provide a powerful tool for observing ocean properties with a variety of sensors. Including an acoustic Doppler current profiler (AD2CP) in this suite allows accurate positioning of the glider in the water column away from the surface and bottom using advanced processing techniques. Knowing the glider position, observations of temperature, salinity, velocity and other measurements can be mapped in three dimensions. The result is a detailed view of the ocean in a region or along a transect line. The glider operator can adapt this coverage as conditions or needs dictate, providing persistent coverage in one area (e.g. acting as a virtual mooring) or adaptive sampling in one or more areas. 

Analyzing the velocity measurements from an AD2CP mounted on a moving glider is a complicated process. The AD2CP measures water velocities relative to the glider, a combination of the absolute water velocity and glider velocity over ground. Most applications require knowing either one or both of the latter two quantities. Numerous methods to process the velocity measurements to obtain both glider and absolute water velocities exist, providing different levels of accuracy, smoothing and resolution. A different solution or combination of solutions is typically needed depending on measurement goals, available data, and when processing occurs (e.g. on board or in post processing). 

iRobot® collaborated with Nortek to integrate a 1 MHz AD2CP in the 1KA Seaglider™ with a pressure rating to 1000 m.  In this half-day workshop, scientists and engineers from Nortek and iRobot will discuss considerations for operating a glider with an integrated AD2CP. Technical topics such as power management, sensor programming/communication, and data telemetry as well as velocity measurement considerations will be covered.  AD2CP considerations such as how often to profile and at what resolution will be discussed along with their relationship to processing velocity data to extract absolute water and glider velocities (and glider positions). An overview of velocity processing methods and their benefits and constraints is also covered.

Attendees will receive a general overview of glider operations, AD2CP integration, advanced Doppler processing, and example raw and processed data obtained during development of the integrated solution. 

Eventbrite - Improving Glider Missions with Integrated ADCP
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