Ionospheric slant total electron content analysis using global positioning system based estimation

US9576082B2 · kind B2 · utility

Assignee

• CALIFORNIA INSTITUTE OF TECHNOLOGY · US

Inventors

• Lawrence C. Sparks · La Cañada Flintridge, US
• Anthony J. Mannucci · Pasadena, US
• Attila Komjathy · La Cañada Flintridge, US

Key dates

• Filing date: Jul 10, 2013
• Grant date: Feb 21, 2017
• Expiry date: Jun 4, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S19/41
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method, system, apparatus, and computer program product provide the ability to analyze ionospheric slant total electron content (TEC) using global navigation satellite systems (GNSS)-based estimation. Slant TEC is estimated for a given set of raypath geometries by fitting historical GNSS data to a specified delay model. The accuracy of the specified delay model is estimated by computing delay estimate residuals and plotting a behavior of the delay estimate residuals. An ionospheric threat model is computed based on the specified delay model. Ionospheric grid delays (IGDs) and grid ionospheric vertical errors (GIVEs) are computed based on the ionospheric threat model.