Analysis of troposcatter communication fading characteristics under different weather conditions

Abstract

Received signals of troposcatter communication are closely related to the weather, and there are currently few short-term analyses of the signals. The basic mode of troposcatter communication and the influence principle of weather system on the received signal were analyzed, the typical troposcatter communication link in North China was observed for a long time, the observation samples under different weather conditions on sunny and rainy days were selected, and the fading of the received signal was statistically analyzed, including signal fading, fading depth and fading speed, which provided reference for the tactical application of troposcatter communication equipment. On rainy days, or from 9 o'clock to 17 o'clock of sunny days, the propagation mode is mainly turbulent scattering, and the signal quality is poor, so it is not suitable to plan heavy-load tasks; From 19 o'clock to 8 o'clock the next morning of sunny days, the propagation mode is mainly stable layer reflection, and atmospheric waveguides often appear, and the quality of the received signal will be greatly enhanced, which can ensure large-capacity data transmission.