AN EXPERIMENTAL INVESTIGATION OF THE CALIBRATION OF ERRORS IN PREDICTED LINES OF POSITION OF LOW-FREQUENCY HYPERBOLIC NAVIGATION SYSTEMS
Abstract
An experiment is described in the calibration of a low-frequency hyperbolic radio navigation system. It proposes that in low-frequency systems, irregularities in the true hyperbolic lines-ofposition grids as compared with the predicted grids are of such a nature that regularly spaced calibration at reasonable intervals would significantly improve the accuracy of the system. A typical low-frequency system was chosen for the experiment, and a representative portion of the system service area was calibrated by an airborne measurement of position indication and true position throughout the test area. The low-frequency system, position-instrumentation system, and conduct of the experiment are described. The improved accuracy that can be obtained at various levels of calibration effort is discussed, and a method of determining the station spacing required for certain levels of accuracy is developed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1961
- Accession Number
- AD0258221
Entities
People
- James O'day
- Joseph Sullivan
- William Porter
Organizations
- University of Michigan