Point Pairing Method Based on the Principle of Material Frame Indifference for the Characterization of Unknown Space Objects using Non-Resolved Photometry Data

Abstract

The point pairing method in this paper is based on a set of simple physical truths for three-axis stabilized space objects in the geosynchronous orbit (GEO). It defines a method for the calculation of pairs of observation conditions (i.e. point pairs) that have a special property for three-axis stabilized GEO object characterization. An observation condition is defined to be the geometry of illumination for the solar panel and the body of the satellite and the geometry of its observation by a sensor. The physical truths are due to observation conditions that are equivalent with respect to either the solar panel or body for a pair of points, which can be identified analytically. When the observation conditions are equivalent for the solar panel, the contribution to the GEO object brightness by the solar panel at that pair of points is identical. Then the difference between the pair of brightness values cancels the solar panel contribution unconditionally, and the remainder is only due to the body. Similarly, when the contribution of the body to the observed brightness is the same for the point pair, the difference between the two brightness values cancels the body contribution unconditionally and the remainder is only due to the solar panels. This enables separation of the observed brightness data into contributions by the solar panels and the body, which is fundamental to space-object characterization. This separation of the solar panel or body contributions is feasible in each waveband of observation. Thus point pairing is useful for the analysis of panchromatic as well as multispectral data. The desired conditions for point pairing occur routinely, typically within weeks of each other.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2013
Accession Number
ADA591555

Entities

People

  • Anil B. Chaudhary
  • Jeremy Murray-krezan
  • Keith Lucas
  • Phan Dao
  • Shaylah Mutschler
  • Tamara E. Payne
  • Tim Vincent

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Coordinate Systems
  • Earth Orbits
  • Geometry
  • Geosynchronous Orbits
  • Geosynchronous Satellites
  • Ground Based
  • Illumination
  • Observation
  • Orbits
  • Satellite Buses
  • Space Based
  • Space Objects
  • Spacecraft
  • Spacecraft Orbits
  • Specular Reflection
  • Three Dimensional

Readers

  • Fluid Dynamics.
  • Image Processing and Computer Vision.
  • Regression Analysis.

Technology Areas

  • Space