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Proceedings Paper

MOSAIC array design for space-based distributed multispectral wildfire sensor
Author(s): Canaan Sungkuk Hong; Richard I. Hornsey; Paul J. Thomas
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Paper Abstract

The detection of incipient wildfires from space is optimized by high spatial resolution, redundant coverage of a large swath, modest spectral resolution, and a high image frame rate. The desired information rate can exceed 109 bytes/sec, which is difficult to achieve with conventional sensor designs. A design is described for a distributed sensor consisting of 102 - 103 identical detection modules linked by a serial bus to a central controller. Each detection module or 'chipxel' contains an intelligent bus interface, a detector array, a multiplexer, amplifiers, digitizers, local data and program memory, a local controller, and modest image reprocessing. Clock, timing, and power control can also be present. The baseline detector element is an active CMOS image sensor, although a mix of detectors can share a common readout structure. The paper will describe the specifications for a two-chip implementation of a chipxel for space-based wildfire detection, with emphasis on the intelligent bus interface, power control, and on-chip preprocessing. Key analog and digital elements of the chip have been implemented in CMOS 0.35 micrometer technology, while ancillary functions and design augmentations can be evaluated in a gate array or similar hardware.

Paper Details

Date Published: 6 December 1999
PDF: 12 pages
Proc. SPIE 3759, Infrared Spaceborne Remote Sensing VII, (6 December 1999); doi: 10.1117/12.372670
Show Author Affiliations
Canaan Sungkuk Hong, Univ. of Waterloo (United States)
Richard I. Hornsey, Univ. of Waterloo (Canada)
Paul J. Thomas, Ctr. for Research in Earth and Space Technology (Canada)

Published in SPIE Proceedings Vol. 3759:
Infrared Spaceborne Remote Sensing VII
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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