A portable, self-contained, 5MSa/s data acquisition system for broadband, high frequency acoustic beamforming

2003 ◽  
Author(s):  
Koay Teong Beng ◽  
Tan Eng Teck ◽  
J.R. Potter
Keyword(s):  
Data Acquisition ◽  
High Frequency ◽  
Data Acquisition System ◽  
Acquisition System

4-GHz analog data acquisition system using high-frequency guided-wave modulators

1993 ◽  
Author(s):  
Frank Roeske ◽  
Ronald E. Haigh ◽  
Keith F. Hugenberg ◽  
Mark E. Lowry ◽  
Dan C. Nelson
Keyword(s):  
Data Acquisition ◽  
High Frequency ◽  
Data Acquisition System ◽  
Guided Wave ◽  
Acquisition System

Instrumentation and Data Acquisition System for an Air-Sea Interaction Buoy

1978 ◽  
Vol 59 (9) ◽  
pp. 1102-1113
Author(s):  
S. SethuRaman ◽  
W. A. Tuthill ◽  
J. McNeil
Keyword(s):  
Data Acquisition ◽  
Data Transmission ◽  
High Frequency ◽  
Fast Rate ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Line Of Sight ◽  
High Frequency Response ◽  
Interaction Experiment ◽  
Future Plans

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.

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

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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