DBCP-O1 Recommended format (SVP standard drifter format)

DBCP-O3 Recommended format

(SVP standard drifter format)

This is the Argos message format recommended by the DBCP evaluation group for the so called "Standard SVP drifter", i.e. SST only Lagrangian drifter. It can be used for buoys transmitting 28 bit Argos IDs. See also complete list of DBCP recommended formats.

Please contact Mayra Pazos for details.

Advantages of this format are:

It is standard, and used heavily with the Argos GTS sub-system.Implementation with the GTS sub-system is easy and fast.
It is simple.
It is small (i.e. 24 bits only) and therefore permits to save transmission power.

Drawback:

It is not flexible and only permits to encode SST, battery voltage, and sea water switch data (drogue detector).

Description

Bits Sensor Description Sampling Calibration

8 Submergence Sea water switch, i.e. drogue detector. 30 minutes observation cycle 5 sec. sampling, cumulated, updated every 30 min.
Immersion time in seconds during the 30 minute period, e.g. time = count*10, or % of time underwater, e.g. %=count*0.555

6 Voltage Battery voltage 15 min. sampling e.g. Bat = count*0.2 Volts

10 SST Sea Surface Temperature 1 min. sampling, averaged and updated every 15 min. Linear, e.g. SST = (-5 + 0.05 * count) Celsius

8 Unused Unused bits (not present in case of 28 bit Argos IDs) Unused bits Forced to zero.

Bits	Sensor	Description	Sampling	Calibration
8	Submergence	Sea water switch, i.e. drogue detector. 30 minutes observation cycle	5 sec. sampling, cumulated, updated every 30 min.	Immersion time in seconds during the 30 minute period, e.g. time = count10, or % of time underwater, e.g. %=count0.555
6	Voltage	Battery voltage	15 min. sampling	e.g. Bat = count*0.2 Volts
10	SST	Sea Surface Temperature	1 min. sampling, averaged and updated every 15 min.	Linear, e.g. SST = (-5 + 0.05 * count) Celsius
8	Unused	Unused bits (not present in case of 28 bit Argos IDs)	Unused bits	Forced to zero.