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Proceedings Paper

Absolute temperature stability of passive imaging radiometers
Author(s): Neil Anthony Salmon; Jonathan R. Borrill; David G. Gleed
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Paper Abstract

A challenge in the development of multi-channel millimeter wave imaging radiometers is overcoming effects associated with the temperature dependence of receiver responsivity. In this paper, the stability of absolute radiation temperature measurements, made with direct and heterodyne detection radiometers, is investigated theoretically and experimentally. The agreement between theory and experiment is found to be good. Changes in measured radiation temperatures were found to be between 6 degree(s)K at 35 GHz and 145 degree(s)K at 220 GHz, for a one degree change in instrumental temperature. Suggestions are made, as to how the temperature stability of radiometers may be improved.

Paper Details

Date Published: 27 June 1997
PDF: 11 pages
Proc. SPIE 3064, Passive Millimeter-Wave Imaging Technology, (27 June 1997); doi: 10.1117/12.277072
Show Author Affiliations
Neil Anthony Salmon, Defence Evaluation and Research Agency Malvern (United Kingdom)
Jonathan R. Borrill, Defence Evaluation and Research Agency Malvern (United Kingdom)
David G. Gleed, Defence Evaluation and Research Agency Malvern (United Kingdom)

Published in SPIE Proceedings Vol. 3064:
Passive Millimeter-Wave Imaging Technology
Roger M. Smith, Editor(s)

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