Method and apparatus for ultra-wide circular scanning imaging by optical satellite
US11015928B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2017 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Dec 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B37/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A technology for ultra-wide circular scanning imaging by an optical satellite is provided. Calculating an angle θ1 between the outermost field of view of an area array camera (2) and an earth-pointed axis (q) of a satellite (1) according to the width W required for ground imaging coverage in a direction perpendicular to the flight direction (b) of the satellite (1) and according to the height h of the orbit of the satellite (1); installing the area array camera (2) on a side surface of the satellite (1) according to the angle θ1; calculating the maximum rotation angle ωmax allowed by the satellite (1) according to the minimum exposure time T of a detector of the satellite (1) and the worst ground pixel resolution r of the satellite (1); selecting a rotation speed ω of the satellite (1) that is less than ωmax, and setting the rotation speed ω to be the rotation speed relative to the ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.