Modeling method of shortwave aeronautical mobile channel based on Watson model

Abstract

The invention belongs to the field of short-wave data communication technology, and in particular relates to a short-wave aviation mobile channel modeling method based on Watson model, which includes acquiring the operating state of the aircraft; Maneuvering frequency and motion trajectory; build a short-wave aeronautical mobile channel model according to the operating state of the aircraft and the improved Watson model; in the improved Watson model, the Doppler frequency shift of the channel is remodeled, and the Doppler frequency shift is remodeled. The frequency shift is constructed as a time-varying Doppler frequency shift related to the motion state; the present invention reduces the complexity of the mobile scene by studying the influence of factors such as the maximum moving speed and acceleration, maneuvering frequency, and motion trajectory of the aircraft on the short-wave aeronautical mobile channel. Combined with channel fading, it reflects all the characteristics of short-wave mobile communication, and has important reference value for further research on short-wave aeronautical mobile communication system.

Description

technical field [0001] The invention belongs to the short-wave data communication technology neighborhood, in particular to a short-wave aviation mobile channel modeling method based on Watson model. Background technique [0002] Short-wave communication (3-30MHz) utilizes the mechanism of the ionosphere to reflect high-frequency electromagnetic waves to achieve over-the-horizon communication up to thousands of kilometers. After multiple reflections, global coverage can be achieved. It is a national and military long-distance communication, mobile communication and emergency communication. basic means. When the satellite communication system fails, short-wave communication is the main means, and sometimes even the only means, for the remote command and control of the aircraft beyond the visual range. In aeronautical mobile communication systems, when the aircraft performs variable-speed linear motion or circular motion, the relative motion of the receiving and sending ends ...

AI Technical Summary

Problems solved by technology

[0004] However, due to the imperfect functionality of the existing Watterson model, when establishing a shortwave channel model, the model has a simple structure, does not combine the complexity of the mobile scene with channel fading, and cannot reflect all the characteristics of the shortwave mobile channel

Therefore, there is a lack of a standard channel model for HF aeronautical mobile channels

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