ClearSat 15 Arogs/GPS
GPS-Accurate Date, Time, and Location
Reliable ARGOS Data Collection


An Argos/GPS Unit

Description

The ClearSat-15 is an SVP-specification drifter with on-board GPS (Global Positioning System) navigation to provide accurate locations (typically within 20 meters) anywhere in the world on a schedule meeting the user's needs. The Argos system* reliably collects the user's data and can provide them to the user in a number of convenient formats including e-mail. A rugged ABS spherical float protects a ClearSat-2.0 Argos PTT, Rockwell Jupiter™ GPS engine (tracks as many as 12 GPS satellites), Argos and GPS antennas, and an ample power supply. The user may select to update GPS positions every 0.5, 1, 6, 12, or 24 hours. The Argos message reports GPS data (year, month, day, hh:mm:ss, latitude and longitude) to accuracies of +/- 1 second and +/- 0.0001 degree. As many as seventeen previous GPS positions are transmitted in four 256-bit Argos messages which can be decoded using Parse™ software (IBM-PC compatible). Although the buoy profile is quite low at the sea surface (approximately 20 cm.), extensive use of this equipment in oceanographic research verifies that Argos transmissions and GPS operate with high reliability. Operation is initiated by removing a magnet from the the outside of the hull. Alkaline batteries can power the unit in continuous operation mode for about one year. Standard instrumentation includes sea surface temperature, drogue presence and battery level. Other options are available.

 

Technical Specifications:

Physical Hull 40.6 cm. (16 in) diameter ABS, total weight 34 kg (75 lb)
Drogue 1 meter diameter x 7 meter long holey sock center at 15 meters depth
Power Supply 7 - 12.5 VDC 112 AH, alkaline battery, one year
Transmission Duty Cycle 3 /6, 8/16, 12/14, and 24/48 hours on/hours off, or continuous. Other duty cycle options available
GPS Year, month,day, time (+/- .5 s); latitude and longitude +/- 0.0001 degrees
RF Output 1± .3 watt into 50 ohms
Temperature -50 to 50°C, storage, -5 to 45°C, operation

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Sybrandy, A.L. and P.P. Niiler, 1991. WOCE/TOGA Lagrangian Drifter Construction Manual, Scripps Institution of Oceanography, SIO Reference 91/6, WOCE Report Number 63
ClearSat-2.0 is CLS/Argos-certified.
For further information about Argos data collection services:
U.S.: North American CLS, Inc., 9200 Basil Court, Suite 306, Landover, MD 20785, U.S.A.
Europe: CLS/Service Argos, 18 avenue Edouard Belin, 31055 TOULOUSE Cédex, FRANCE
Voice: 61 39 47 74 Telex: 531 752F Fax: 61 75 10 14