The International GNSS Service (IGS) has ensured open access, high-quality GNSS data products since 1994. These products enable access to the definitive global reference frame for scientific, educational, and commercial applications – a tremendous benefit to the public, and key support element for …

Atmospheric Grid Analysis & Profile Extraction (AGAPE) When low earth orbit (LEO) satellites receive GPS signals that have first traveled though the atmosphere we refer to this as an atmospheric radio occultation. They occur in that brief window when a LEO satellite sets or rises behind the earth …

This is a webservice that uses GipsyX software that we have developed to run precise point positioning on GNSS RINEX data. With enough good data we achieve static positioning at ~5 millimeter precision and kinematic positioning for receivers on mobile platforms at ~5 centimeter precision. This …