High dynamic satellite channel simulator

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

Inactive Publication Date: 2015-04-15
COMMUNICATION UNIVERSITY OF CHINA
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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, the embodiments of the present invention will be described in detail with reference to the drawings.

[0028] Figure 1 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 entire system is: the user runs the satellite channel simulation software through the computer, configures the satellite channel model, communication frequency, orbit parameters, terminal parameters, and environmental parameters, and starts the simulation program after the configuration is completed. During the operation of the simulation program, the generated channel parameters are transmitted to the satellite channel simulation unit through the Ethernet network, the channel simulation is completed by the simulation unit, and finally the radio frequency unit modulates the signal ...

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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 specifically relates to a high-dynamic satellite channel simulator. Background technique: [0002] In the satellite communication system design, planning, and pre-research stage 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 operating in low orbit, the communication between the satellite and the receiver The relative speed and relative acceleration are very large, and the satellite channel has high dynamic Doppler shift characteristics. [0003] Real and reliable satellite channel characteristics need to be measured by satellites or spacecraft. However, this method consumes huge funds, complex test systems, time-consuming and laborious. Only a few organizations such as NASA at home and abroad can undertake such actual measurements. In the initial stage, d...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/391H04B7/185H04B17/40
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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