Tactical GPS systems and ground-based receiver modules (GB-GRAM) often feature multiple serial ports, where some are dedicated to ICD-GPS-153 for control/status and others to NMEA for standard position data. Accessing the Specification
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? icd-gps-153 protocol
Transmitted once per second (1 Hz), this provides the operational state of the receiver. icd-gps-153 protocol
The protocol typically includes several critical message formats designed for specific synchronization tasks: icd-gps-153 protocol