Space debris observation method based on alternating exposure times of charge coupled device (CCD) camera
US11570375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2020 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Jul 16, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A space debris observation method based on alternating exposure times of a charge coupled device (CCD) camera is provided. The present disclosure controls the CCD camera to acquire consecutively and alternately short-exposure and long-exposure images based on preset exposure times. The present disclosure realizes detection and astronomical positioning of low-orbit, medium-orbit and high-orbit space debris by processing short-exposure images of odd-numbered frames. The present disclosure realizes detection of medium-orbit and high-orbit space debris by processing long-exposure images of even-numbered frames, and realizes astronomical positioning of the medium-orbit and high-orbit space debris detected in a current frame through plate constant model coefficients of adjacent odd-numbered frames. In addition, in a search mode, the present disclosure realizes precise astronomical positioning of low-orbit, medium-orbit and high-orbit space debris through a multi-point adjustment method and the plate constant model coefficients of adjacent odd-numbered frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.