Iridium Next's payload
Primary frequencies:
- service links in the 1617.775-1626.5 MHz (space-to-Earth,
Earth-to-space) frequency band;
- feeder downlinks and telemetry and tracking functions in the 19.4-19.6 GHz
(space-to-Earth) frequency band;
- feeder uplinks and tracking and command functions in the 29.1-29.3 GHz
(Earth-to-space) frequency band;
- inter-satellite links in the 23.18-23.38 GHz frequency band.
The new system would also receive Automatic Dependent Surveillance Broadcast
signals on a center frequency of 1090 MHz and relay information concerning
those signals to other satellites in the 23.18-23.38 GHz frequency band and to
the ground in the 19.4-19.6 GHz frequency band.
Those satellite will carry a secondary payload named ADS-B (Automatic Dependent
Surveillance-Broadcast) built by ITT Exelis. The ADS-B 1090 MHz Extended
Squitter (ES) receivers will complement ground-based air navigation systems
currently in use by relaying, in near-real time, position and status
information of aircraft flying over oceans, poles and remote regions to air
traffic controllers on the ground.
Will carry AIS modules for Aireon LLC (built by Harris on the AppStar platform)
as hosted payloads.
The Satellite Time and Location (STL) is a technology to supplement or replace
te GPS signals to Iridium-connected small devices.