NASA SBIR 2020-II Solicitation

Proposal Summary

Proposal Information

Proposal Number:
20-2- S1.08-5488
Phase 1 Contract #:
80NSSC20C0469
Subtopic Title:
Suborbital Instruments and Sensor Systems for Earth Science Measurements
Proposal Title:
AquaFloat: A Near-Surface Hyperspectral Radiometer System for Improved Ocean Color Measurements within the UV-VIS-NIR Spectral Region

Small Business Concern

   
Firm:
          
Opto-Knowledge Systems, Inc. (OKSI)
          
   
Address:
          
19805 Hamilton Avenue, Torrance, CA 90502
          
   
Phone:
          
(310) 756-0520                                                                                                                                                                                
          

Principal Investigator:

   
Name:
          
Mr. Edward Gonzalez
          
   
E-mail:
          
eddy.gonzalez@optoknowledge.com
          
   
Address:
          
19805 Hamilton Avenue, CA 90502 - 1341
          
   
Phone:
          
(310) 756-0520                                                                                                                                                                                
          

Business Official:

   
Name:
          
Ilana Gat
          
   
E-mail:
          
accounting@optoknowledge.com
          
   
Address:
          
19805 Hamilton Avenue, CA 90502 - 1341
          
   
Phone:
          
(310) 756-0520                                                                                                                                                                                
          

Summary Details:

   
Estimated Technology Readiness Level (TRL) :                                                                                                                                                          
Begin: 4
End: 6
          
          
     
Technical Abstract (Limit 2000 characters, approximately 200 words):

In P-I we demonstrated a low cost, easy to operate sea-surface-spectroradiometer system, AquaFloat, for measuring the underwater upwelling radiance at 3 adjustable depths close to the sea surface within the top 1 m for determination of water-leaving radiance & remote-sensing reflectance just above the surface. A sensor for measuring the downwelling irradiance above the sea surface is also included. The sensors provide data at high spectral resolution over the UV-VIS-NIR and minimize the uncertainties of common approaches, e.g., free falling profilers that generally do not provide good data close to the surface and buoy-based systems with a single-depth radiometer placed at near-surface depth or multi-depth radiometers placed at depths of 1 m and deeper. The uncertainties associated with extrapolation of subsurface measurements taken at a single depth or depths of ~1 m and deeper to just below the surface are particularly significant in the red and NIR spectrum even in optically uniform water column owing to effects of inelastic Raman scattering by water molecules. By conducting time series measurements, AquaFloat reduces errors due to variations in underwater light field associated with the effects of sea surface waves, vertical changes in water inherent optical properties including the effects of intermittent bubble clouds, and changes in sky conditions, which can affect profiling measurements. The low-cost design, ease, and flexibility of use of AquaFloat offers an improved tool for routine work aimed at the development and validation of in-water ocean color algorithms. These features of AquaFloat also facilitate the use of multiple systems in special experiments to map horizontal variability in remote-sensing reflectance; subpixel variability within the GSD of a satellite sensor or various events in optically complex coastal waters as red-tide blooms and river plumes. AquaFloat is useful in vicarious calibration of current & future satellite ocean color missions.

          
          
     
Potential NASA Applications (Limit 1500 characters, approximately 150 words):

AquaFloat supports NASA ocean color-related calibration/validation activities for universities, NASA centers, and government labs. AquaFloat is easy to deploy in deep ocean, littoral regions, estuaries, and inland water bodies. Current and future missions (e.g., MODIS, VIIRS/JPSS, PACe, HyspIRI, GEO-CAPE, OLCI/Sentinel, SGLI/GCOM, GOCI) involving ocean color measurements will benefit from AquaFloat's near-sea surface radiometry. AquaFloat benefits NASA Ocean Biology and Biogeochemistry programs supporting satellite ocean color missions.

          
          
     
Potential Non-NASA Applications (Limit 1500 characters, approximately 150 words):

The AquaFloat sea surface radiometer will enhance the capabilities of existing marine radiometer sensors, improving applications of satellite and airborne ocean color remote sensing. This, in turn, will provide improvements in data for countries, states, municipalities, and research institutions to assess the conditions and trends within the aquatic environments and make informed decisions.

          
          
     
Duration:     24
          
          

Form Generated on 05/13/2021 14:47:46