Method for retrieving tropospheric wet delay and atmospheric water vapor content over polar sea ice with techdemosat-1 satellite grazing angle spaceborne global navigation satellite system reflectometry
US12405373B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 1, 2025 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Jan 1, 2045 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for retrieving tropospheric wet delay and atmospheric water vapor content over polar sea ice with TDS-1 satellite grazing angle spaceborne GNSS-R is provided, including: Si, obtaining TDS-1 GNSS-R raw intermediate frequency signal data, VMF3 grid data, GPT3 grid data and ERA5 data; S2, correcting an error of tropospheric wet delay estimation of grazing angle spaceborne GNSS-R; S3, constructing a grazing angle spaceborne GNSS-R tropospheric wet delay estimation model; S4, calculating grazing angle spaceborne GNSS-R ZWD; S5, calculating a Tm value of a target point based on GPT3 model, substituting the Tm value into a conversion factor II, and combining calculated GNSS-R ZWD to obtain a GNSS-R IWV estimated value; and S6, verifying inversion performance of GNSS-R ZWD and integrated water vapor (IWV) by using reference data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.