The protocol is often implemented in specialized software libraries (like
GLI-FLO is a secure GPS PNT distribution device approved by the U.S. Air Force GPS Directorate and fully ICD-GPS-153 compliant. One device can replace up to four DAGR receivers, distributing secure PNT data simultaneously to multiple weapon or communication systems.
Many tactical timing systems provide both protocols simultaneously: an ICD-GPS-153 port for secure military data and an NMEA 0183 port for general output.
The Global Positioning System (GPS) relies on precise communication between satellites, control segments, and user equipment. While many users are familiar with application-level protocols like NMEA 0183, military and specialized aerospace systems require highly secure, robust, and deterministic communication. This is where the protocol becomes essential.
In the world of Global Positioning System (GPS) development, Interface Control Documents (ICDs) are the bibles of system integration. They dictate exactly how a receiver talks to a satellite. A search for "ICD-GPS-153" typically yields zero results in official repositories (such as the US Coast Guard Navigation Center or GPS.gov). icd-gps-153 protocol
Interface Control Documents (ICDs) are the formal means of establishing, defining, and controlling interfaces for the Global Positioning System (GPS) program. Among the many ICDs that govern GPS, the ICD-GPS-153 standard is a critical interface specification for military GPS systems. This article provides a detailed exploration of the ICD-GPS-153 protocol, its core messages, its relationship to SAASM and SINCGARS, its hardware characteristics, and its real-world applications.
| | Primary Use Case | Key Characteristics | | :--- | :--- | :--- | | ICD-GPS-153 | Military GPS Receivers | Secure, SAASM-compatible, deterministic binary/ASCII messages for PNT and status data | | NMEA 0183 | Civilian Maritime & GPS | Text-based, sentence-oriented, less secure, limited data types | | STANAG | NATO Military Systems | Broader standard encompassing multiple PNT and radio interfaces, ensuring NATO interoperability | | ICD-GPS-060 | Military GPS Receivers | Older standard; succeeded by ICD-GPS-153 for many modern applications |
: A distinct byte pattern indicating the start of a new message block.
What (like C++ or Python) are you using for the interface? AI responses may include mistakes. Learn more Share public link The protocol is often implemented in specialized software
The ICD-GPS-153 protocol defines several message types, each with a unique identifier. Some of the most common message types include:
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defines the communication protocol between GPS User Equipment (receivers) and external host systems using serial interfaces
: Provides slower background system updates. It transfers long-term telemetry data and configuration states without overcrowding the serial data bus. Tactical Implementation and System Integration This is where the protocol becomes essential
While M-Code is superior, because:
stands for Interface Control Document . The number 153 refers to a specific document within the GPS enterprise. Officially titled "Interface Control Document (ICD) for the GPS User Equipment (UE) Precision Lightweight GPS Receiver (PLGR) Interface," the standard has evolved far beyond its original hardware namesake.
Data is physically transmitted using RS-232 (for short-range point-to-point connections) or RS-422 (for balanced, differential signaling over longer distances in high-noise environments).
The protocol is a critical component in a wide range of military and defense systems: