Digital Imaging and Remote Sensing Laboratory: Areas of Research dirs research


Modular Imaging Spectrometer Instrument (MISI)

The Digital Imaging and Remote Sensing Group at RIT has constructed an imaging spectrometer called the Modular Imaging Spectrometer Instrument which is a line scanner with a 6" rotating mirror coupled to a Cassegrain telescope of focal ratio f/3.3. Two 0.5mm square silicon detectors (broad-band visible) and two 1.5mm fiber optics are placed at the primary focal plane to give a GIFOV of 0.3 m and 1.0 m respectively at 0.3 km of altitude. The fibers lead to two separate 36-channel spectrometers to cover the EM spectrum from 0.440µm to 1.020µm in 0.010µm spectral bands. A pyramid mirror diverts some photons from the primary focal plane to five HgCdTe detectors for the long-wave infrared region; secondary focal planes are available in the SWIR and MWIR for future use (Feng, 1995). An on-board calibration system consisting of two blackbodies for the LWIR and a tungsten source for the visible completes this imaging system for gathering absolute radiometrically calibrated data for remote sensing applications.

The system is designed to serve as:

  • an airborne laboratory for earth observation research
  • a high resolution under-flight system for high-altitude aircraft and satellite sensor performance evaluation
  • a versatile data collection platform for acquiring imagery to be used in algorithm development and evaluation for reconnaissance and environmental application
  • and as a survey instrument for demonstration and proof-of-concept studies of image analysis methods in areas such as energy conservation, water quality assessment, and hazardous waste site management

The MISI Optical System

The Spectral Calibration of MISI

The Thermal Calibration of MISI

Web Reference:

Feng, Xiaofan., "Design and Performance of a Modular Imaging Spectrometer Instrument", Rochester Institute of Technology Ph.D. Dissertation, (1995).

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The Modular Imaging Spectrometer Instrument (MISI)

An AutoCad schematic of MISI

First Line-Scan Image Taken by the Broad-Band Visible Detectors on the MISI of the Rochester Skyline (12/02/95).

First Line-Scan Image Taken by the Broad-Band Visible Detectors on the MISI of the RIT Dormitories (12/02/95).