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Time-delay-and-integration charge coupled devices /CCDs/ applied to the Thematic MapperThe visible focal plane of the Thematic Mapper, the next generation sensor system for application to earth resource survey, uses complex hybrid assembly techniques to interface silicon photodiodes to JFET preamplifiers. This complexity can be ameliorated by the use of a 20-channel time-delay-and-integration (TDI) CCD with nine stages of integration per channel. By going to a CCD array operating in a TDI mode, over 700 individual op amps can be replaced with only 48 op amps. Smooth spectral response and 70% quantum efficiency have been provided by using doped tin oxide gates over the imaging region.
Document ID
19790033192
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Thompson, L. L.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Mccann, D. H.
(Westinghouse Electric Corp. Pittsburgh, Pa., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: Applications of electronic imaging systems; Seminar
Location: Washington, DC
Start Date: March 30, 1978
End Date: March 31, 1978
Accession Number
79A17205
Distribution Limits
Public
Copyright
Other

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