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README.md

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Subdirectory Contents

Each numbered directory contains a test case from Revisiting Spacetrack Report 3 (RSR3). Here is a key to the contents of each case directory:

  • .tle - The two-line element set for the test case, as given in Appendix D ("Test Case Listing") of RSR3 and the file SGP4-VER.TLE distributed with the RSR3 sample code.
  • .ref.txt - The reference output for the test case, as given in Appendix E ("Test Case Results Listing") of RSR3.
  • .rsr.txt - The reference output for the test case, as generated by the testcpp program included with RSR3. Offset times given in seconds instead of minutes. Otherwise, identical to .ref.txt except for two instances of off-by-one discrepancies in low-precision digits.
  • .lib.txt - The output of the SGP4++ library, as generated by the included runtest program. Note that the output of runtest differs slightly from the reference testcpp output as generated on the same computer with the same compiler. This discrepancy is presently unaccounted for.
  • .txt - The test output generated by the gtg test script. Identical to .lib.txt.

Intermediate files generated by the test script:

  • .shp - Shapefile geometry.
  • .shx - Shapefile index.
  • .dbf - Shapefile attribute table.
  • .dbf.txt - Text listing of attribute table generated with dbfdump.
  • .log - Log of --verbose messages generated by gtg.

Contents

The reference output and test output for each test case is also aggregated in these files:

  • test-reference.txt contains the concatenation of all .ref.txt files.
  • test-rsr.txt contains the concatenation of all .rsr.txt files.
  • test-library.txt contains the concatenation of all .lib.txt files.
  • test-gtg.txt contains the concatenation of all gtg test output files (.txt).