Sent at a lower frequency (typically once every 6 seconds or 1/6 Hz), this is used for broader system health and data buffering. Major Applications
The protocol is a specialized serial interface standard primarily used in military and high-precision timing applications to facilitate communication between Global Positioning System (GPS) receivers and external devices. What is ICD-GPS-153?
Unlike common consumer GPS protocols like NMEA-0183, which are human-readable ASCII text, ICD-GPS-153 is frequently used to handle sensitive or critical time and status information between specialized receivers (like or GB-GRAM modules) and host systems. Key Components and Message Types
Devices like the Safran NetClock use ICD-GPS-153 messages to provide 1PPS (pulse-per-second) and time-of-day information to external equipment without requiring a full military-grade receiver for simple time-only tasks.