Application Of Non-Silicon Schottky Barrier Charge-Coupled Devices (CCDs) For Star Trackers

J. H. Pollard; J. J. Boyle

doi:10.1117/12.958135

12 December 1979 Application Of Non-Silicon Schottky Barrier Charge-Coupled Devices (CCDs) For Star Trackers

J. H. Pollard, J. J. Boyle

Proceedings Volume 0203, Recent Advances in TV Sensors and Systems; (1979) https://doi.org/10.1117/12.958135
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

Abstract

The demonstration of high charge transfer efficiencies in Schottky barrier GaAs CCEs1 allows the exploration of this technology for optical imagers for star tracking applications. A device concept is described which utilizes this development and illustrates optimization of the device parameters for ionizing radiation environments, high operational temperature and long storage time requirements. Considerations are given to the noise components in relation to the star signal and attention is drawn to the necessity of minimizing the active device volume when designing for operation in a radiation environment. The shot noise multiplier associated with operating the device in a gamma environment has been calculated and is expected to be lower for GaAs based devices than for silicon. The requirements for imaging seventh magnitude stars will be discussed. The technology employs a heterojunction CCD approach consisting of a GaAs absorber layer, a GaAlAs channel layer, and a GaAlAs passivation layer, sealed to glass. The radiation hardness of this device will be discussed for neutron and gamma irradiation.

Citation Download Citation

J. H. Pollard and J. J. Boyle "Application Of Non-Silicon Schottky Barrier Charge-Coupled Devices (CCDs) For Star Trackers", Proc. SPIE 0203, Recent Advances in TV Sensors and Systems, (12 December 1979); https://doi.org/10.1117/12.958135

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available