In Situ Microradiometers: Smaller, Faster, and Scalable to Hyperspectral

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNG06CA03C
Agency Tracking Number: 042331
Amount: $600,000.00
Phase: Phase II
Program: SBIR
Awards Year: 2006
Solicitation Year: 2004
Solicitation Topic Code: E1.03
Solicitation Number: N/A
Small Business Information
Biospherical Instruments, Inc.
5340 Riley Street, San Diego, CA, 92110-2621
DUNS: 091488635
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Charles Booth
 Principal Investigator
 (619) 686-1888
Business Contact
 John Morrow
Title: Business Official
Phone: (619) 686-1888
Research Institution
Radiometers are a crucial element in NASA's studies of Planet Earth. This proposal addresses the basic need for a miniature light sensor, flexibly configurable and optimized for above and in-water optical property measurements. The innovation we are proposing develops a 1 cm diameter photodetector module, called a "microradiometer." The microradiometer consists of a photodetector, preamplifier with controllable gain, high resolution analog to digital converter (ADC), microprocessor, and an addressable digital port, all on one small, thin circuit assembly. We anticipate that the design will result in significant improvements in dynamic range, sampling speed, reliability, and reduced power consumption over existing instruments. In a Phase II embodiment, a single microradiometer forms the basis of a very small (much less than 2.5 cm diameter) single-channel submersible light sensor that can be deployed in support of coastal research opportunities. In another application, clusters of microradiometers can be matched with front end optics (collector/window/filter stack) to form small, fast, less expensive multiwavelength radiometers for a variety of measurements ? even hyperspectral applications. We call this configuration the Modular Microradiometer System (MMS). These MMS systems can be packaged into small underwater housings suitable for deployment on drifters, moorings, towed vehicles, and vertical profilers.

* information listed above is at the time of submission.

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