Title :
Modeling ionospheric propagation of low frequency signals for remote sensing purposes using charge density profiles
Author :
Schmitter, Ernst D.
Author_Institution :
Univ. of Appl. Sci. Osnabrueck, Osnabruck, Germany
Abstract :
The use of powerful low or very low frequency (LF/VLF) transmitter signals (mainly in the range 15-60 kHz) is a well established technique for remote sensing of the lower ionosphere. Standard tools for calculating the the world wide propagation conditions - like the Long Wave Propagation Capability (LWPC) code - usually rely on default procedures for modeling the day-night transition conditions that do not map reality sufficiently for modeling purposes, especially with regard to timing and shape of the terminators. We propose an improved method to cover with these problems by making use of the possibility to introduce charge density profiles into the LWPC that vary appropriately over the day-night cycle and additionally can model disturbances caused by forcing of the lower ionosphere from above (X-rays, particle precipitations) and below (atmospheric waves).
Keywords :
D-region; E-region; F-region; atmospheric elementary particle precipitation; atmospheric waves; charge density waves; ionospheric disturbances; ionospheric electromagnetic wave propagation; remote sensing; X-ray forcing; atmospheric wave forcing; charge density profile; day-night cycle; day-night transition condition; ionospheric disturbance; ionospheric forcing; ionospheric propagation model; long wave propagation capability code; low frequency signal; particle precipitation; remote sensing; very low frequency transmitter signal; world wide propagation condition; Atmospheric modeling; Atmospheric waves; Interpolation; Ionosphere; Propagation; Remote sensing; Transmitters;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050880