Deep space channel simulation method and device based on orbital drive

Abstract

The invention discloses a deep space channel simulation method and a deep space channel simulation device based on orbital forcing, wherein the method comprises the following steps: building a deep space channel model according to characteristics of a deep space link; determining principal factors influencing signal transmission, wherein the principal factors comprise one or more of near-earth space loss, Doppler frequency shift, solar flaring, antenna pointing error loss and antenna polarization error loss; obtaining a communication link parameter according to real-time characteristics of anorbit with mission, and performing hardware simulation, thereby obtaining link loss according to real-time orbit data, acquiring a signal receiving power real-time variation curve of a receiver, and obtaining signal power, noise power and channel parameters for hardware configuration. The method can simultaneously observe variation of the signals through an oscilloscope and a frequency spectrograph, and thus, accurate estimation for a deep space communication link can be realized on the ground.

Description

technical field [0001] The invention relates to the technical field of deep-space channel simulation, in particular to a deep-space channel simulation method and device based on orbital driving. Background technique [0002] With the vigorous development of the aerospace industry and the success of lunar exploration missions, human beings have set their sights on more distant cosmic stars. For the complex cosmic environment, in order to ensure the reliable transmission of communication signals, it is necessary to establish a reliable channel for deep space. The model simulates the change of the communication signal during the mission of the detector. [0003] Deep space exploration missions have difficulties in communication such as long communication distances, harsh communication environments, and intermittent link interruptions. The long communication distance leads to severe attenuation of the signal, and the signal-to-noise ratio of the received signal is extremely low...

AI Technical Summary

Problems solved by technology

The long communication distance leads to severe attenuation of the signal, and the signal-to-noise ratio of the received signal is extremely low. At the same time, the signal transmission experiences a long time delay, and real-time control cannot be realized; the influence of cosmic rays, the moon, the sun and other stars has caused a bad communication environment. When the sun is between the space position of the earth and the probe, it will have a greater impact on the communication link; and due to factors such as the rotation and revolution of the star, and the orbiting flight of the probe, the communication link will be interrupted intermittently, requiring Estimate the visible time of the link for signal transmission

[0004] At present, there are software simulation and hardware implementation for the simulation of deep space channels, but both are independent of each other. Software simulation focuses on the calculation of link parameters, while hardware simulation focuses on signal changes, and does not reflect the orbital parameters of specific detection tasks and the channel. Change in real time

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