User Guide
21
Waves:Partition
Waves:Partition is recommended as a balance between the Standard and
Spectrum modes. In Waves:Partition mode, your Spotter calculates wave
statistics based on a 1-hour sample period instead of the 30-minute sample
period of the Waves:Standard mode. In addition to the standard bulk
parameters (Waves:Standard), Spotter provides the same parameters over
two ‘sea’ and ‘swell’ wave partitions.
Waves:Spectrum
Recommended for deeper analysis, modeling, and science applications. In
this mode, Spotter transmits the variance density spectrum and directional
moments (a 1, b1, a2, b2) as a function of frequency. Waves:Spectrum uses a
60-minute sample period to improve the statistical estimate of spectrum and
directional moments. The user can select an update rate of between 1 and 6
hours. Update rates faster than 6 hours will incur higher data usage costs than
Waves:Standard mode due to the increased amount of data transmitted.
Track mode
Designed for faster positional updates of the Spotter device. It is intended
for retrieval of Spotter when in free-drifting mode, or for other tracking needs.
In Track mode, messages are transmitted every 15 minutes and the payload
contains only positional updates (Spotter does not transmit Wave data when
in Track mode). These positional updates can be visualized on the integrated
map interface on the Dashboard.
The main purpose of this mode is to track a Spotter and get rapid positional
updates for retrieval, which also implies that your data usage rate will be
about 4x higher while Spotter is in Track mode. Although wave data is not
transmitted during Track mode, full data is stored to the SD card.
Iridium package: For further detail on data modes, subscription, and usage
rates see: www.sofarocean.com/posts/spotter-data-access
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