MOSAIC array design for space-based distributed multispectral wildfire sensor

Canaan Sungkuk Hong; Richard I. Hornsey; Paul J. Thomas

doi:10.1117/12.372670

6 December 1999 MOSAIC array design for space-based distributed multispectral wildfire sensor

Canaan Sungkuk Hong, Richard I. Hornsey, Paul J. Thomas

Proceedings Volume 3759, Infrared Spaceborne Remote Sensing VII; (1999) https://doi.org/10.1117/12.372670
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Canaan Sungkuk Hong, Richard I. Hornsey, and Paul J. Thomas "MOSAIC array design for space-based distributed multispectral wildfire sensor", Proc. SPIE 3759, Infrared Spaceborne Remote Sensing VII, (6 December 1999); https://doi.org/10.1117/12.372670

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