| Protocol | Use Case | Security | Complexity | | :--- | :--- | :--- | :--- | | | Military precision receivers (GB-GRAM, DAGR) | High (SAASM/M-Code) | Medium | | NMEA 0183 | Civilian GPS, legacy marine | None | Low | | ICD-GPS-155 | Older military interfaces (PLGR only) | Medium (pre-SAASM) | Medium | | STANAG 4660 | NATO standard for land navigation | Medium-High | High | | UBX (u-blox) | Commercial embedded systems | None (optional encryption) | Medium |
: It is categorized as a "Historic" or "Older" version in some libraries, meaning it may not be used for new equipment designs but remains critical for maintaining existing military systems. Implementation and Usage icd-gps-153 protocol
defines the communication protocol between GPS User Equipment (receivers) and external host systems using serial interfaces | Protocol | Use Case | Security |
High-rate PVT solutions, satellite visibility matrices, health status, and hardware fault alerts. Key Technical Functions satellite visibility matrices
The ICD-GPS-153 protocol supports several message types, including:
While there are dozens of specific messages, these are the core types used in most integrations: Message ID Description
Understanding the ICD-GPS-153 Protocol: The Standard for GPS Receiver Interfaces
