Abstract

This report will demonstrate how a companding flash analog-to-digital converter can be used to satisfy both the dynamic range and resolution requirements of an infrared imaging system. In the past, infrared imaging systems had to rely on analog electronics to process a thermal image. This was costly and, in many ways, inefficient but the only way to perform the function. Digital processing was impractical because ADC conversion speeds were slow with respect to video frequencies. Furthermore, it is impossible to gain the necessary dynamic range using linear conversion techniques without large digital wordlengths. Therefore, the principles of companding flash analog-to-digital converters will be shown and analyzed. The advantages of companding with respect to linear conversion will be demonstrated and the problem of sufficient comparator resolution within the compression region outlined.

Graduation Date

1986

Semester

Spring

Advisor

Martin, Robert J.

Degree

Master of Science (M.S.)

College

College of Engineering

Format

PDF

Pages

48 p.

Language

English

Rights

Public Domain

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0020363

Included in

Engineering Commons

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