GPS Satellite Clock Bias Corrections with Real-Time Uncertainty

Minute-by-minute time series of clock biases and their formal 1-sigma uncertainties for operational GPS satellites, generated in real-time by JPL's Global Differential GPS Operations Centers. The dataset is part of NASA's GUARDIAN network and is hosted by the CDDIS. Daily files can be concatenated to create longer time series.

Use Cases

• Improving real-time Precise Orbit Determination (POD) by applying minute-level clock corrections.
• Analyzing GPS satellite clock stability and performance over time using the time series of biases.
• Enhancing timing accuracy for scientific instruments that rely on GPS signals.
• Concatenating daily files to study long-term trends in GPS clock behavior.

Strengths

• Provides formal 1-sigma uncertainty estimates for each clock correction, enabling error analysis.
• Data is generated in real-time, supporting time-sensitive applications.
• Cross-platform presence on NASA Earthdata and Data.gov signals its importance and reliability.

Limitations

• Specific column names, row counts, and total dataset size are not provided by any source.
• Sources conflict on license details: some specify 'other-license-specified', while others list 'None'.

Provenance

Source

NASA CDDIS, generated by JPL's Global Differential GPS Operations Centers.

Collection Method

Real-time generation and accumulation of corrections from the GPS constellation.

Time Range

Daily files, concatenatable for larger coverage.

Freshness

2026-03-13 01:34:50.469207

Geography

Global coverage from the GPS satellite constellation.