Test results from an imager for scenes with high dynamic range and low light levels

D. P. Osterman, W. Good, R. Philbrick, L. Schneider, P. Johnson, P. Kaptchen, M. Narciso

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


Ball Aerospace has field tested an Engineering Design Unit (EDU) of a Low Light Imager (LLI) instrument capable of high dynamic range imaging in the Visible to Near Infrared (VNIR) wavelength range. The instrument design is wellsuited to imaging scenes at low illumination levels or with radiance levels spanning a high dynamic range, including night scenes with clouds or anthropogenic light sources, and scenes that span the earth's terminator. A novel operating mode autonomously sets gains individually for each pixel and continuously updates the settings. Utilizing this scheme, the LLI EDU achieves a measured dynamic range > 107 in each image pixel of a scene. The upper and lower ends of the LLI dynamic range enable imaging of scenes illuminated by full sunlight or by a quarter moon only, as well as terminator scenes that span the two. The modular instrument configuration facilitates designs with different total Fields of View, including a three-module design with a cross-track FOV of 113 degrees. Testing and validation performed on the EDU include stray light testing, calibration and acquisition of ground images from an airborne platform. Radiometric test results demonstrate compliance with all radiometric requirements for the day/night imager for the National Polar Orbiting Environmental Spacecraft and Sensor (NPOESS) program.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2010
Externally publishedYes
EventEarth Observing Systems XV - San Diego, CA, United States
Duration: Aug 3 2010Aug 5 2010


OtherEarth Observing Systems XV
Country/TerritoryUnited States
CitySan Diego, CA


  • Cloud imaging
  • Day/Night
  • Dynamic Range
  • Imager
  • Night Lights
  • Nighttime
  • VNIR

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Test results from an imager for scenes with high dynamic range and low light levels'. Together they form a unique fingerprint.

Cite this