Correction information integrity monitoring in navigation satellite system positioning methods, systems, and devices

US11187813B2 · kind B2 · utility

Assignee

• Trimble Inc. · US

Inventors

• Markus Brandl · Höhenkirchen-Siegertsbrunn, DE
• Ulrich Weinbach · Höhenkirchen-Siegertsbrunn, DE
• Carlos Javier Rodriguez Solano · Höhenkirchen-Siegertsbrunn, DE

Key dates

• Filing date: Aug 20, 2019
• Grant date: Nov 30, 2021
• Expiry date: Feb 24, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S19/07
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Some embodiments of the invention relate to generating correction information based on global or regional navigation satellite system (NSS) multiple-frequency signals observed at a network of reference stations, broadcasting the correction information, receiving the correction information at one or more monitoring stations, estimating ambiguities in the carrier phase of the NSS signals observed at the monitoring station(s) using the correction information received thereat, generating residuals, generating post-broadcast integrity information based thereon, and broadcasting the post-broadcast integrity information. Other embodiments relate to receiving and processing correction information and post-broadcast integrity information at NSS receivers or at devices which may have no NSS receiver, as well as to systems, NSS receivers, devices which may have no NSS receiver, processing centers, and computer programs. Some embodiments may for example be used for safety-critical applications such as highly-automated driving and autonomous driving.