D Logs summary

MiLLennium Command Descriptions Manual 187

RTCA Standard Logs
The RTCA (Radio Technical Commission for Aviation Services) Standard is being designed to support Differential
Global Navigation Satellite System (DGNSS) Special Category I (SCAT-I) precision instrument approaches. The
RTCA Standard is in a preliminary state. NovAtel’s current support for this Standard is based on "Minimum
Aviation System Performance Standards DGNSS Instrument Approach System: Special Category I (SCAT-I)" dated
August 27, 1993 (RTCA/DO-217).
See Chapter 6, Message Formats, 6.1 RTCA Standard Logs for more detailed information on RTCA standard logs.
RTCM Standard Logs
The Radio Technical Commission for Maritime Services (RTCM) was established to facilitate the establishment of
various radio navigation standards, which includes recommended GPS differential standard formats.
The standards recommended by the Radio Technical Commission for Maritime Services Special Committee 104,
Differential GPS Service (RTCM SC-104,Washington, D.C.), have been adopted by NovAtel for implementation
into the GPSCard. Because the GPSCard is capable of utilizing RTCM formats, it can easily be integrated into
positioning systems around the globe.
See Chapter 6, Message Formats, 6.2 RTCM Standard Commands and Logs for more detailed information on
RTCM standard logs.