Verification and Validation of Tropospheric Model/Database

Abstract

A verification and validation of tropospheric models and databases has been performed based on ray tracing algorithm, statistical analysis, test on real time system operation, and other technical evaluation process. Databases are examined for pressure levels, adequate humidity, and temperature representation with respect to each layer and location. Any missing grid point and wrong data base been corrected or inserted through a linear interpolation process. Three models are verified through 130 areas of interest in order to avoid any complexity and time. Model performances are examined for time delay, standard deviation, angle of arrival and azimuth sensitivity. Modified exponential model out performs other models and ECM or HIRAS data are more realistic in applying to the operating system.

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Document Details

Document Type
Technical Report
Publication Date
Jan 19, 1998
Accession Number
ADA336881

Entities

People

  • Choi Junho
  • Kwak Sung
  • Mara Melton

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Angle Of Arrival
  • Artificial Satellites
  • Cartesian Coordinates
  • Computer Programs
  • Data Sets
  • Databases
  • Grids
  • Humidity
  • Information Science
  • Operating Systems
  • Refractive Index
  • Sea Level
  • Statistical Analysis
  • Validation
  • Verification
  • Water Vapor
  • Weather

Readers

  • Aerospace Test and Evaluation
  • Atmospheric Science/Meteorology
  • Mathematical Modeling and Probability Theory.