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High dynamic satellite channel simulator

A satellite channel and channel simulation technology, applied in the field of satellite communication, can solve the problems of no communication interface, excessive computer calculation, and the computer cannot complete real-time channel simulation, etc., and achieves the effect of good support and low cost

Inactive Publication Date: 2013-02-13
COMMUNICATION UNIVERSITY OF CHINA
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AI Technical Summary

Problems solved by technology

[0005] The channel simulation model can accurately simulate channel characteristics, but due to the large amount of computer calculation and the lack of a common communication interface, a single computer cannot complete the real-time channel simulation

Method used

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Embodiment Construction

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0028] figure 1 It is the overall structure diagram of the system of the present invention. It can be seen from the figure that the present invention is composed of a channel parameter generation unit, a channel simulation unit and a radio frequency unit. The working principle of the whole system is: the user runs the satellite channel simulation software through the computer, configures the satellite channel model, communication frequency point, orbit parameters, terminal parameters, and environmental parameters, and starts the simulation program after configuration. During the running of the simulation program, the generated channel parameters are transmitted to the satellite channel simulation unit through the Ethernet network, and the channel simulation is realized by the simulation unit, and finally the signal is modulated to the radio frequ...

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Abstract

The invention discloses a high dynamic satellite channel simulator, belonging to the field of satellite communications. The satellite channel simulator comprises a channel parameter generation unit, a channel simulation unit and a radio frequency unit. The whole system has the following working principle: a computer operates satellite channel simulation software, a satellite channel model, a communication frequency point, orbit parameters, terminal parameters and environmental parameters are configured, and a simulation program is started after configuration is completed. In the operating process of the simulation program, generated channel parameters are transmitted to the satellite channel simulation unit via the Ethernet network, the simulation unit loads the satellite channel parameters to a signal sent by a satellite communication device, the realization of channel simulation is completed, and finally, the radio frequency unit modulates the signal to radio frequency. The invention has the main goal of accurately and timely simulating a satellite channel under laboratory conditions, and a channel simulator with controlled cost and strong operability is provided for the development of the satellite communication device.

Description

Technical field: [0001] The invention belongs to the field of satellite communication, and in particular relates to a high dynamic satellite channel simulator. Background technique: [0002] In the stage of satellite communication system design, planning, and pre-research of transceiver equipment, it is necessary to analyze and simulate the characteristics of the communication channel between the satellite and the ground, especially when the satellite is in low orbit, the communication between the satellite and the receiver The relative speed and relative acceleration are particularly large, and the satellite channel has high dynamic Doppler frequency shift transformation characteristics. [0003] Real and reliable satellite channel characteristics need to be measured by satellites or spacecraft, but this method consumes a lot of money, the test system is complicated, time-consuming and labor-intensive, and only a few organizations such as NASA at home and abroad can underta...

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Application Information

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IPC IPC(8): H04B17/00H04B17/391H04B17/40
Inventor 陈超杨占昕徐伟掌李正祥卢起斌邓纶晖
Owner COMMUNICATION UNIVERSITY OF CHINA
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