Automatic Precise Positioning Service
The GDGPS Automatic Precise Positioning Service provides high-accuracy post-processed positioning solutions for users who collect GPS data in RINEX format. Simply upload your RINEX observation file to our web-based service, and receive precise position estimates and quality metrics via email.
This service uses JPL's GipsyX/RTGx software with GDGPS precise orbit and clock products to achieve positioning accuracy from meter-level to centimeter-level, depending on your receiver quality, observation duration, and processing latency tolerance.
Access the service at: https://apps.jpl.nasa.gov
Performance & Accuracy
Positioning accuracy depends on several factors including receiver quality, observation duration, and the latency of the orbit and clock products used in processing.
| User Type | Latency | Horizontal Accuracy (95%) | Vertical Accuracy (95%) |
|---|---|---|---|
| Survey-grade receiver (dual-frequency, 24h session) |
1-2 weeks | < 1 cm | < 2 cm |
| Geodetic receiver (dual-frequency, 1h session) |
1-2 days | < 3 cm | < 5 cm |
| Consumer receiver (single-frequency, 15min session) |
Real-time | < 2 m | < 4 m |
Note: Accuracies shown are representative values for typical conditions. Actual performance may vary based on satellite geometry, multipath environment, ionospheric conditions, and receiver quality.
How It Works
- Upload your RINEX observation file via the web interface
- Select processing options (rapid or final orbit/clock products)
- Provide your email address for result notification
- GipsyX/RTGx processes your data with GDGPS precise products
- Receive position solution, quality metrics, and plots via email
Supported Data Formats
- RINEX 2.x and 3.x: Standard observation files
- GPS, GLONASS, Galileo, BeiDou: Multi-constellation support
- Single or dual-frequency: Optimized processing for both
- Static or kinematic: Multiple processing modes available