<title>4-GHz analog data acquisition system using high-frequency guided-wave modulators</title>

Instrumentation and data acquisition system for a typical air-sea interaction experiment are described. The experiments were conducted with the help of a stable air-sea interaction buoy anchored 5 km offshore in the Atlantic Ocean near Long Island. Errors due to the tilting motions of the buoy are discussed. The instruments were designed to survive the hostile marine environment and maintain their calibration and relatively high frequency response. A line-of-sight RF telemetry system was used to obtain data at a fast rate. Unique power supply features such as a wind charger and a solar panel were used to extend the life of the batteries. Future plans regarding data transmission through geostationary satellites are presented.

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High-Frequency Sensor Data Acquisition System (SDAC) for Flight Control and Aerodynamic Data Collection

32nd AIAA Applied Aerodynamics Conference ◽

10.2514/6.2014-2565 ◽

2014 ◽

Cited By ~ 16

Author(s):

Or D. Dantsker ◽

Renato Mancuso ◽

Michael S. Selig ◽

Marco Caccamo

Keyword(s):

Data Collection ◽

Data Acquisition ◽

Flight Control ◽

High Frequency ◽

Data Acquisition System ◽

Acquisition System ◽

Sensor Data ◽

Frequency Sensor ◽

Sensor Data Acquisition

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Sustenance of Indian Moored Buoy Network During COVID-19 Pandemic – A Saga of Perseverance

Frontiers in Marine Science ◽

10.3389/fmars.2021.718909 ◽

2021 ◽

Vol 8 ◽

Author(s):

R. Venkatesan ◽

K. Jossia Joseph ◽

C. Anoopa Prasad ◽

M. Kalyani ◽

M. Arul Muthiah ◽

...

Keyword(s):

Data Acquisition ◽

High Frequency ◽

Best Practice ◽

Weather Forecast ◽

Data Acquisition System ◽

Acquisition System ◽

Data Sets ◽

Operational Experience ◽

Warning Services ◽

Moored Buoy

The moored buoy network in the Indian Ocean revolutionized the observational programs with systematic time-series measurement of in situ data sets from remote marine locations. The real-time meteorological and oceanographic data sets significantly improved the weather forecast and warning services particularly during extreme events since its inception in 1997. The sustenance of the network requires persistent efforts to overcome the multitude of challenges such as vandalism, biofouling, rough weather, corrosion, ship time availability, and telemetry issues, among others. Besides these, the COVID-19 pandemic constrained the normal functioning of activities, mainly by delaying the maintenance of the network that resulted in losing a few expensive buoy system components and precious data sets. However, the improvements in the buoy system, in-house developed data acquisition system, and efforts in ensuring the quality of measurements together with “best practice methods” enabled 73% of the buoy network to be functional even when the cruises were reduced to 33% during the COVID-19 lockdown in 2020. The moored buoys equipped with an Indian buoy data acquisition system triggered high-frequency transmission during the Super cyclone Amphan in May 2020, which greatly helped the cyclone early warning services during the COVID-19 pandemic. The COVID-19 lockdown points toward the reliability and enhanced utility of moored buoy observations particularly when other modes of measurements are limited and necessitates more such platforms to better predict the weather systems. The present study analyzed the enhancement of the buoy program and improvisation of the buoy system that extended the life beyond the stipulated duration and enabled the high-frequency data transmission during cyclones amid the COVID-19 lockdown. The recommendations to better manage the remote platforms specifically in the event of a pandemic based on the operational experience of more than two decades were also presented.

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