rtcm3-knowledge-patch

Installation
SKILL.md

RTCM3 Knowledge Patch

RTCM SC-104 standard for differential GNSS corrections. Current version: RTCM 10403.4 (December 2023). This patch covers protocol details needed to parse RTCM3 frames, handle message types, and implement NTRIP client/server connections.

Source: RTCM Special Committee 104 standards, IGS documentation, u-blox integration guides

Quick Reference

Area What it covers Details
Message types Version 3.1-3.4 message number ranges, constellation coverage Message Types and SSR
SSR corrections Extended SSR (1240-1270), SSR phases 1-3, PPP-RTK Message Types and SSR
MSM vs Legacy Resolution limits, timestamp alignment, format selection MSM vs Legacy
NTRIP protocol v1/v2 client connections, base station upload, VRS NTRIP Protocol

Key Pragmas

  • Use MSM messages (1071+) for all new implementations — legacy (1001-1012) only covers GPS/GLONASS.
  • Use MSM4 for RTK corrections, MSM7 for full observables with Doppler.
Related skills
Installs
2
GitHub Stars
19
First Seen
Apr 7, 2026