For assisted-GNSS (A-GNSS), E-911, and other applications requiring weak-signal
acquisition-aiding techniques, the GDGPS System provides a global binary navigation data product,
containing the navigation data stream from all transmitting GNSS satellites.
The multiply-redundant GDGPS tracking network enables majority voting schemes
to ensure the integrity of this product, where every bit counts. This product is
available redundantly from all three GDGPS Operations Centers (GOCs).