Added #

• Initial production release
• Complete NMEA 0183 parser (GGA, RMC, GSA, GSV, VTG, GST, ZDA, GLL)
• Multi-provider architecture (TCP, UDP, Broadcast, File, Mock)
• RTK/DGPS fix quality support
• Multi-constellation support (GPS, GLONASS, Galileo, BeiDou, QZSS)
• Real-time health monitoring and diagnostics
• Automatic reconnection with exponential backoff
• Stream-based reactive architecture with RxDart
• Backpressure handling and throttling
• Duplicate sentence filtering
• Checksum validation
• Android native integration (MethodChannel/EventChannel)
• Foreground service support for background tracking
• Broadcast receiver for external GNSS apps
• Memory leak prevention
• Comprehensive unit tests
• Example application
• Full documentation

Features #

• GnssService: High-level API for GNSS operations
• GnssRepository: Data management with RxDart streams
• GnssHealthMonitor: Real-time system health monitoring
• NmeaParser: Robust NMEA sentence parsing
• Multiple Providers: Flexible data source integration
• Satellite Tracking: Complete satellite information (PRN, SNR, elevation, azimuth)
• Fix Quality Analysis: RTK Fixed/Float, DGPS, SPS detection
• Accuracy Estimation: CEP calculation from DOP values
• Position Validation: Mock location detection
• Performance Metrics: Data rate, success rate, uptime tracking
• Diagnostics: Issue detection and recommendations

Technical #

• Dart 3.0+ compatible
• Flutter 3.10+ compatible
• Clean Architecture pattern
• Repository pattern
• Stream-based design
• Immutable models
• Thread-safe operations
• Production-ready code quality

[Unreleased] #

Planned Features #

• Serial port provider (USB/Bluetooth)
• RTCM correction parsing
• Baseline calculation
• Kalman filtering
• Position smoothing
• Track recording/replay
• GeoJSON export
• NMEA sentence generation
• iOS support
• Web support