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

A channel modeling, Gobi Desert technology, applied in the field of communication, can solve the problems of low effectiveness, formation of sandstorms, ferocity, etc., and achieve the effect of strong consistency

Inactive Publication Date: 2017-07-25
BEIJING RUNKE GENERAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 str

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

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Embodiment 1

[0070] see figure 1 A schematic flow chart of a Gobi Desert air-to-ground channel modeling method provided in Embodiment 1 of the present invention, the method includes the following steps:

[0071] S11. Analyze the actual influencing factors of the air-to-ground channel transmission in the Gobi desert environment, and extract the relevant parameters of the air-to-ground channel transmission under the actual climate conditions in the environment;

[0072] Among them, the actual factors include transmission characteristics, surface geographical features and climate factors that affect channel modeling, such as figure 2 As shown in the Gobi Desert environment, air platforms may include airplanes, unmanned aerial vehicles, and hot air balloons. The flight parameters of different air platforms are different, so the transmission characteristics between the receiving device in the ground station will also be different. At the same time, because the geographical location and climat...

Embodiment 2

[0081] Referring to embodiment one of the present invention and figure 1 The specific process of steps S11 to S14 described in , and see Figure 4 Corresponding to the second embodiment of the present invention figure 1 Schematic diagram of the process of extracting influencing factors affecting air-to-ground channel modeling in step S13 shown in , figure 1 Step S13 specifically includes:

[0082] S30. According to the relevant parameters and the acquired known information of the transmitting end and the receiving end, determine whether there is a direct path, and if so, calculate the path loss of the direct path;

[0083] S31. According to the relevant parameters and the acquired known information of the transmitting end and the receiving end, determine whether there is a reflection path, if yes, determine the number of reflection paths and calculate the relative time delay and relative power of each reflection path ;

[0084] Specifically, see Figure 5 Corresponding to...

Embodiment 3

[0156] Corresponding to the Gobi Desert open-ground channel modeling method disclosed in Embodiment 1 and Embodiment 2 of the present invention, Embodiment 3 of the present invention also provides a Gobi Desert open-ground channel modeling device, see Figure 10 A schematic structural diagram of the Gobi Desert open-ground channel modeling device provided in Embodiment 3 of the present invention, the device specifically includes:

[0157] The first extraction module 1 is used to analyze the actual influencing factors of the air-to-ground channel transmission in the Gobi desert environment, and extract the relevant parameters of the air-to-ground channel transmission under the actual climate conditions in the environment, wherein the actual factors include transmission characteristics, surface geography Characteristics and climatic factors affecting channel modeling;

[0158] The establishment module 2 is used to set reasonable parameters and establish a preliminary channel mod...

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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...

Claims

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Application Information

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IPC IPC(8): H04B17/391
CPCH04B17/391H04B17/3912
Inventor 周琳谈树峰付斌
Owner BEIJING RUNKE GENERAL TECH
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