Loran-C Signal Analysis Propagation Model Evaluation
Title | Loran-C Signal Analysis Propagation Model Evaluation PDF eBook |
Author | Burt Gambill |
Publisher | |
Pages | 229 |
Release | 1980 |
Genre | Electronics in navigation |
ISBN |
This report compares predictions of groundwave propagation time with experimental values. The prediction methods included an integral equation technique that accounts for both terrain and impedance variations, a method developed by J.R. Wait that accounts for impedance variations, and Millington's or Pressey's technique that accounts for inhomogeneous impedance. Experimental incremental time-of-arrival data were acquired between eight sites along a propagation path from Search-light, NV. to Ft. Cronkhite (near San Francisco Bay). The major conclusions reached from the analysis and comparison of results are: terrain variations produce significant local and cumulative phase variations, in this case, a cumulative large increase in total secondary phase; impedance values need to be known to within less than a factor of two to be sufficient for preparing charts for navigation in restricted waterways; a priori definition of terrain variation can be performed with required accuracy - a priori definition of surface impedance values with sufficient accuracy is unlikely without supporting measurements; and a combination of predictions and measurements is required for accurate chart preparation. Predictions can be used to define appropriate measurement locations and to interpolate between measurement values. (Author).
Loran-C Signal Analysis
Title | Loran-C Signal Analysis PDF eBook |
Author | Burt Gambill |
Publisher | |
Pages | 224 |
Release | 1979 |
Genre | Loran |
ISBN |
Loran-C Signal Analysis
Title | Loran-C Signal Analysis PDF eBook |
Author | Larry W. Nelson |
Publisher | |
Pages | 116 |
Release | 1980 |
Genre | Electronics in Navigation |
ISBN |
Scientific and Technical Aerospace Reports
Title | Scientific and Technical Aerospace Reports PDF eBook |
Author | |
Publisher | |
Pages | 892 |
Release | 1994 |
Genre | Aeronautics |
ISBN |
Technical Abstract Bulletin
Title | Technical Abstract Bulletin PDF eBook |
Author | |
Publisher | |
Pages | 228 |
Release | |
Genre | Science |
ISBN |
Monthly Catalog of United States Government Publications
Title | Monthly Catalog of United States Government Publications PDF eBook |
Author | |
Publisher | |
Pages | 968 |
Release | |
Genre | Government publications |
ISBN |
Monthly Catalogue, United States Public Documents
Title | Monthly Catalogue, United States Public Documents PDF eBook |
Author | |
Publisher | |
Pages | 630 |
Release | 1983 |
Genre | Government publications |
ISBN |