一种星载扇形波束散射计后向散射系数定标方法
By establishing a lookup table for the relative viewing angle and illumination integration parameters of the resolution unit, the problems of low processing efficiency and low resolution of the backscattering coefficient calibration method of the spaceborne fan beam scatterometer were solved, and efficient and accurate backscattering coefficient calibration was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIAN INSTITUE OF SPACE RADIO TECH
- Filing Date
- 2023-12-19
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the backscattering coefficient calibration method of the spaceborne sector beam scatterometer has low processing efficiency and low resolution, and cannot achieve accurate and efficient range-oriented equal-resolution multiple observations.
By establishing a lookup table for the relative viewing angle and relative position of the resolution unit and the illumination integration parameter of the resolution unit before data processing, and by using satellite ephemeris data and antenna parameters for data processing, the cumulative range of the power slice of the resolution unit and the corresponding beam center viewing angle are determined, and then converted into backscattering coefficients by combining the calibration parameters within the system.
This improved the efficiency and reliability of data processing, ensured that the backscattering coefficients of each resolution unit had the same resolution, adapted to changes in satellite orbital parameters, and achieved efficient backscattering coefficient calibration.
Smart Images
Figure CN117826102B_ABST