DocumentCode
1441576
Title
Proton-induced changes in CTE for n-channel CCDs and the effect on star tracker performance
Author
Hopkinson, Gordon R.
Author_Institution
Sira Electro-Opt. Ltd., Chislehurst, UK
Volume
47
Issue
6
fYear
2000
fDate
12/1/2000 12:00:00 AM
Firstpage
2460
Lastpage
2465
Abstract
Proton-induced changes in charge transfer efficiency of two CCD types with differing pixel sizes have been characterized in detail and compared with measurements of the shift in position of artificial star images to determine the impact on star tracker performance. Errors in star position are large at low backgrounds but can be limited to less than 0.1 pixels for 10 krd(Si) proton environments (e.g., 15 years GEO) if the background is high and windowed readout is used
Keywords
CCD image sensors; optical tracking; proton effects; space vehicle electronics; 10 krad; CTE; GEO; artificial star images; charge transfer efficiency; n-channel CCDs; pixel sizes; proton-induced changes; star position errors; star tracker performance; windowed readout; Charge coupled devices; Charge measurement; Charge transfer; Current measurement; Image storage; Pixel; Position measurement; Protons; Size measurement; Temperature sensors;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/23.903793
Filename
903793
Link To Document