Method for determining attitude of star sensor based on rolling shutter imaging
US9503653B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2013 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Feb 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/689
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for determining an attitude of a star sensor based on a rolling shutter imaging is provided. The method comprises: optimizing a relation among an exposure time, a line readout time, an interline integral interval time and a frame processing time of an image for the rolling shutter imaging by using a rolling shutter model of an image sensor in the star sensor based on a line; predicting and extracting locations of M navigation stars comprised in a star map in the star sensor according to the optimized relation among the exposure time, the line readout time, the interline integral interval time and the frame processing time; and transferring an updated the attitude matrix and an updated angular velocity of the star sensor sequentially until a final attitude matrix and a final angular velocity of the star sensor are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.