GOES Rebroadcast (GRB)
 | |
|---|---|
| Frequencies | 1681.6 MHz,1686.6 MHz |
| Frequency Range | 1681.6 MHz - 1686.6 MHz |
| Mode | DVB-S2, RAW |
| Modulation | QPSK16,8PSK |
| ACF | — |
| Emission Designator | — |
| Bandwidth | 10 MHz |
| Location | Worldwide |
| Short Description | GOES Rebroadcast (GRB) is a form of data sent from the GOES-R series of satellites that contain information from all of the instruments on board the GOES satellites |
| I/Q Raw Recording | — |
| Audio Sample | |
The GOES Rebroadcast (GRB) data is a set of data products broadcasted from the GOES-R series of satellites that contains information from all of its on-board instruments. The data contains imagery and info from the Advanced Baseline Imager, the Solar Ultraviolet Imager, as well as the standard HRIT data.
The signal is broadcasted as a DVB-S2 (Digital Video Broadcast, standard 2) signal modulated as both QPSKQuadrature Phase-Shift Keying (2 bits per symbol) and 8PSK8-Phase Phase-Shift Keying (3 bits per symbol), with forward error corrections of 2/3 and 9/10. The sample rate is around 7.8-8.6 Million samples per second.
The dish size recommended for RFRadio Frequency data reception is 2m-5m, larger being better.
An example of all GOES data can be found on NOAA's website
The images in the GRB data are also quite frequent with very little amounts of filler data.
Here is the official data table for the GOES GRB data:
| Product | Data |
|---|---|
| Full Disk Imagery | Every 5-15 minutes |
| Other modes | 3000km x 5000km CONUS, 1000km x 1000km Mesoscale |
| Polarization | Dual Circular Polarized |
| Polarization | Dual Circular Polarized |
| Receiver Center Frequency | 1681.6 MHzMegaHertz (MHz) 10^6 Hz |
| Data rate | 31 Mbps |
| Antenna coverage | Earth coverage to 5 |
| Data sources | ABI (16 bands), GLM, SEISS, EXIS, SUVI, MAG |
| Space weather | 2 Mbps |
| Lightning data | 0.5 Mbps |
Frequencies[edit]
1686.6MHz is the primary frequency used for the GRB data with a bandwidth of around 10MHz and a noise-to-temprature ratio of around 15.2db/K for worst case locations.
Decoding Software[edit]
https://satdump.org "SatDump"
