EO-1 Advanced Land Imager Modulation Transfer Functions

Abstract

This report presents results of laboratory calibrations of the EO-1 Advanced Land Imager (ALI) instrument. Specifically, it is concerned with the estimated spatial modulation transfer function, or MTF. A combination of design data for the detectors, measurements on the optical subsystem, and laboratory measurements of the complete instrument are used to construct a model of the system spatial transfer function (STF) of the ALI. The optical subsystem measurements, done by the telescope builder, SSG, consisted of interferograms, which they analyzed with Zernike polynomials. Those polynomials were used to model the optical transfer function. The system measurements were scans of a knife-edge, viewed through an imaging collimator. The parameters of the STE model, in particular focus error and carrier diffusion in the detectors, were adjusted to obtain the best agreement with the system measurements. The full, two-dimensional STE's for the ten spectral bands of the instrument are presented.

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Document Details

Document Type
Technical Report
Publication Date
Mar 22, 2000
Accession Number
ADB252266

Entities

People

  • D. R. Hearn

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Arrays
  • Calibration
  • Collimators
  • Contamination
  • Data Analysis
  • Data Processing
  • Detectors
  • Diffraction
  • Environmental Pollutants
  • Focal Planes
  • Measurement
  • Scattering
  • Standards
  • Transfer Functions
  • Two Dimensional
  • Vacuum Chambers

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Optical Physics and Photonics.
  • Software Engineering

Technology Areas

  • Space