A NOTE ON SELECTION OF AN ATMOSPHERIC REFRACTIVITY MODEL FOR RADAR RANGE-HEIGHT-ANGLE CHARTS
Abstract
Work during the past few years by Bauer et al. of MIT Lincoln Laboratory and Bean and Thayer of the NBS Central Radio Propagation Laboratory (CRPL) has established the superiority of a negative-exponential model of the atmospheric radio refractivity vs height function, compared to the linearly decreasing refractivity assumed by the well-known 4/3-earth's-radius method, of accounting for ray bending. However, various values of the zero-altitude refractivity and the exponential constant may be used in the exponential model. For many purposes, such as plotting radar coverage on a range-height-chart, a standard assumption for the atmospheric refraction, corresponding to fixed values of these constants, is desirable. Various factors relevant to selection of such a standard are discussed. A chart and table of ray-path range-height values are presented.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 24, 1961
- Accession Number
- AD0255953
Entities
People
- L.v. Blake
Organizations
- United States Naval Research Laboratory