Net buoy is the hub of the communication system. It talks with seafloor
instruments via acoustic modems that communicate at a rate of 600 baud.
This rate is adequate for the limited amounts of data that need to be
transfered at NeMO and allows data packets to be embedded multiple times
for redundancy and increased reliability. The buoy communicates with the
instruments on the seafloor every hour.
Net buoy links to shore via the Iridium
satellite phone system, which communicates at a rate of 2400 baud in both
of a NeMO Net buoy deployment:
- 1.3 Mb
- 4.7 Mb