http://iet.metastore.ingenta.com
1887

Ionospheric electromagnetic wave propagation

More general concepts than this:

1-2 of 2 results

Filter by subject:

< Any subject

  • Physics [2]
  • Geophysics, astronomy and astrophysics [2]
  • Aeronomy, space physics, and cosmic rays [2]
  • Ionosphere [2]
  • Ionospheric electromagnetic wave propagation [2]
  • Electrical and electronic engineering [2]
  • Electromagnetic fields [2]
  • Electromagnetic waves, antennas and propagation [2]
  • Electromagnetic wave propagation [2]
  • Radiowave propagation [2]
  • See more See less

Filter by content type:

< Any content type

  • ConferencePaper [2]

Filter by publication date:

Filter by author:

< Any author

A HF ionospheric propagation model using analytic ray tracing
Author(s): R.J. Norman, I.G. Platt, P.S. Cannon
Source: IEE Colloquium on HF Antennas and Propagation, 1995, p. 8 - 8
Type: ConferencePaper
+ Show details - Hide details

A method to approximate horizontal gradients when using analytic ray tracing is presented. This method involves automatically tilting the modelled ionospheric profile by displacing the Earth's centre. This method is applied to a grid point ionospheric model which consists of a known ionospheric model coupled with real-time ionospheric measurements at a number of locations. Thus, the grid point ionospheric model is a real-time ionospheric model and together with the tilting method, is useful in a number of applications. Analytic ray tracing results incorporating the tilting method and the grid point ionospheric model are presented. In order to demonstrate the effectiveness of this analytic approach the results are compared with those obtained using the numerical ray tracing package HIRT (homing-in ray tracing) Norman et al., [1994] over the same region. (6 pages)

Add to favourites
Export citations
A propagation model for the mid and high latitude ionosphere over Europe
Author(s): I.G. Platt, P.S. Cannon
Source: Sixth International Conference on `HF Radio Systems and Techniques', 1994, p. 86 - 90
Type: ConferencePaper
+ Show details - Hide details

The management of beyond line of sight HF communications depends critically on effective modelling of the ionosphere together with accurate ray tracing through it. As part of an automatic frequency management system a portable package is being developed to determine the propagation footprint of HF radio waves. The package can also be used to improve the performance of HF single site location and direction finding techniques. The package was broken up into three main sections of development, namely ionospheric specification, propagation determination and the combining of these two to provide the final HF communication model. More details of these requirements and how they are related to each other is given.

Add to favourites
Export citations
Items per page 20 | 50 | 100
Print this page
This is a required field
Please enter a valid email address