Scientific sensors

An autonomous oceanographic data acquisition vehicle/glider that is usable by a wide range of scientists must be able to accommodate many different scientific instrumentation configurations, be capable of collecting specimens and be able to perform the missions as specified. Sensor packages are instrumental to a vehicle. Slocum, Spray, Seaglider and WaveGlider are too small for use with many types of instruments. Additionally, the sawtooth glide pattern is not optimal for certain types of data collection such as Sidescan sonar. Only larger hybrid vehicles can make full use of all instrument types. Unfortunately, this forces the need of larger vessels and more manpower to deploy and recover these vehicles. Some of the instruments used on autonomous underwater vehicles that are rated down to 6000 meters are: Sidescan sonar; Falmouth Scientific NXIC CTD (a fully integrated

Collision control &

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Fig. 15. AUV-Powered Glider's Autonomous Underwater Vehicle Systems Diagram instrument platform (compact, robust and equipped with fully integrated conductivity, temperature, and depth sensors) with battery-power, internal data logging and external sensor input capability. It is designed to meet the demands of open-ocean, estuarine and fresh water environmental monitoring. It can be operated to a depth of 7000 meters and data may be stored on the internal storage memory or transmitted in real time via a serial interface (information available at http://www.falmouth.com/).); Chelsea AQUAtracka III (a compact, lightweight, submersible fluorimeter for the detection of chlorophyll-a, dye tracing or turbidity that when connected to the CTD Sensor provides measured values of chlorophyll, rhodamine, amido rhodamine, fluorescein. The AQUAtracka III is designed for depth up to 6000-meters. Applications: chlorophyll-a and other fluorophor detection, rhodamine and fluorescein dye tracing, particle concentration by light scattering, profiling, towed, moored or ROV deployment, pollution monitoring, bio-geochemical oceanography, and hydrothermal vent studies. This instrument can sense chemical fluorescence or light scatter in the visible and near infrared (400 to 800-nm). Versatility is achieved by the selection of appropriate optical narrow bandpass filters to match the excitation and emission wavelengths of the fluorophor, e.g., chlorophyll-a, rhodamine or fluorescein. It may be configured as a nephelometer by using the same bandpass filters for both excitation and emission.), UV-VIS Spectrometer, video cameras (provide high-resolution video or photo data that can be stored via a frame grabber to the integrated hard disk. The image data will be used, among other things, to qualify the initiated measurement locations offline and therefore document the measurement procedure), and acoustic hydrophones.

Learn Photoshop Now

Learn Photoshop Now

This first volume will guide you through the basics of Photoshop. Well start at the beginning and slowly be working our way through to the more advanced stuff but dont worry its all aimed at the total newbie.

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