Air-ground channel modelling method and device applicable to gobi desert environment

Abstract

The invention discloses an air-ground channel modelling method and device applicable to a gobi desert environment. The method comprises the steps of: analyzing practical factors of air-ground channel transmission in the gobi desert environment, and extracting related parameters required by air-ground channel modelling in a practical weather condition in the environment; according to obtained given information of a transmitting end and a receiving end, setting reasonable parameters and establishing an initial channel model; and, extracting influence factors influencing air-ground channel modelling, and performing refined correction of the initial channel model, so that an air-ground channel transmission model of a gobi desert is obtained. The consistency between the established channel model and a real scene is relatively high; and, the transmission characteristics of a practical channel can be effectively reflected.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an air-ground channel modeling method and device suitable for Gobi Desert environment. Background technique [0002] In recent years, with the development of air platform technologies such as drones and hot air balloons and the increasingly wide application scenarios, more and more surveyors and institutions have begun to study the use of air platform technology for air-ground communication to complete data surveys , detection and return. Especially in special landform environments, such as the Gobi Desert or desert, the use of aerial platform technology can well complete geographic survey and detection tasks. [0003] In order to accurately transmit the data collected by the air platform to the ground station for analysis and processing, it is necessary to establish a suitable air-ground propagation channel model. At present, the air-to-ground channel modeling method is...

AI Technical Summary

Problems solved by technology

At present, the air-to-ground channel modeling method is still in the theoretical research stage of the simplified two-path (direct path and reflection path) model, but for the special terrain environment, this method does not consider the influence of factors such as terrain features and climate conditions

For example, the ground of the Gobi Desert is almost covered by rocky desert, coarse sand, and gravel. Sandstorms are frequent and fierce. The Doppler effect will be brought about by the weather conditions such as large difference, sunny days, long sunshine hours, and frequent strong winds in the Gobi Desert. As a result, the models established by the current air-to-ground channel modeling method can only be used in the theoretical analysis stage, and the actual There is a big difference in the scene, and the effectiveness is low

It can be seen that the models established by the existing modeling methods can only be in the stage of theoretical analysis, without considering the influence of terrain and climate factors in the actual application scenarios, so that the established models are quite different from the actual scenarios, and the effectiveness is low.

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