Depth/Temperature Time Series
Wildlife Computers developed efficient compression algorithms to provide low-frequency reporting of readings from more frequently sampled data stored in the archive. This compression allows messages containing a time series of depth and temperature to be transmitted through the Argos system.
Time-Series messages can be generated using one of five sample intervals (75, 150, 300, 450, 600 seconds.) The sample interval determines the number of messages generated per day. Faster sampling gives more resolution but will result in more messages generated. Selecting a longer sample interval produces fewer messages but decreases the chance that there will be gaps in the time covered by the Time-Series messages. The number of messages received through the Argos system is governed by animal behavior and battery capacity. You will need to balance your animal’s behavior and your study objectives to determine the sampling interval that provides the best balance between coverage and temporal resolution.
Each time series message provides:
- The time series data sampled at the specified interval.
- The minimum and maximum values encountered during the period of time covered by the Time-Series message period as measured at the faster archive sampling rate. This gives you insight to the amount of aliasing that has occurred when generating the Time-Series message.