A5065286101- Radio Wave Propagation Studies
- Millimeter-Wave Propagation and Modeling
- Radio, Podcasts, and Digital Media
- Precipitation Measurement and Analysis
Xi'an University of Technology
2021-2022
A large amount of long-term measurements illustrate that the propagation delay low-frequency (LF) ground-wave exhibits complex temporal variation properties. In this letter, we present a modified integral equation (IE) method to be capable predicting delay. The introduces suitable time-varying conductivity and refractivity models characterize channel in terms two aspects ground atmosphere. Comparisons between experiment data along actual paths show good agreement. effect factors controlling...
In order to study the temporal variation properties of low-frequency (LF) ground-wave propagation delay, it is necessary understand clearly mechanism time-varying factors on delay and their effects delay. this paper, from perspective stratum air layer, influence law degree such as soil temperature, humidity, groundwater depth, atmospheric humidity pressure were analyzed. Firstly, main affecting electrical characteristics ground atmosphere sorted out. Secondly, was Finally, given. The shows...