Algorithm to Compute Tropospheric Refraction Effects on Range Measurements.

Abstract

H. S. Hopfield has modeled a two-quartic tropospheric refractivity profile for correcting satellite range and range rate data which treats the 'dry' and 'wet' components of the tropospheric refractivity separately. The expression given for computing the contributions to range data is sensitive to rounding errors at high elevations even when evaluated in double precision. Alternate forms of the solution are presented here which eliminate the problem of rounding errors and the need for double precision computation. They allow the user to benefit from the full accuracy of Mrs. Hopfield's model for all elevations. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1970
Accession Number
AD0721333

Entities

People

  • S. M. Yionoulis

Organizations

  • Johns Hopkins University Applied Physics Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Artificial Satellites
  • Computational Complexity
  • Computations
  • Elevation
  • Errors
  • Mathematical Analysis
  • Mathematics
  • Measurement
  • Precision
  • Refraction

Readers

  • Astronomy and Astrophysics.
  • Calculus or Mathematical Analysis
  • Radar Systems Engineering.

Technology Areas

  • Space