Testing system for radio frequency consistency of satellite mobile communication terminal and testing method of testing system

Abstract

The invention discloses a testing system for radio frequency consistency of a satellite mobile communication terminal and a testing method of the testing system. The system comprises a logic channel information generator, a frequency correction channel modulation module, another service and control channel modulation module, a channel multiplexing module, a radio frequency up-conversion module, a satellite-to-ground channel simulator, a duplexer, an attenuator, a radio frequency down-conversion module, a channel demultiplexing module, a terminal random access channel demodulation module, a terminal service data channel information acquisition module and a radio frequency consistency testing module. The testing system constructs a satellite-to-ground channel environment by matching the satellite-to-ground channel simulator with the radio frequency up-conversion module, the radio frequency down-conversion module and the attenuator, and simulates a ground station to test the satellite mobile communication terminal. The testing system tests the radio frequency consistency of the satellite mobile communication terminal, is simple in structure and easy to realize, and can lower the testing cost, thereby promoting industrial development of satellite mobile communication.

Description

technical field [0001] The invention relates to a radio frequency consistency test system and method for a satellite mobile communication terminal, belonging to the communication field. Background technique [0002] Satellite mobile communication has outstanding advantages such as large coverage, long range, flexible networking, communication cost is basically independent of distance, not limited by existing ground equipment, and is less affected by terrain and ground objects. Over the past few decades, it has been recognized abroad developed rapidly. [0003] In the development of the satellite mobile communication industry chain, the functions and performance of the terminal directly affect the user experience and the healthy development of the industry. Comprehensive testing of the terminal is a very necessary step and is of great significance to the development of the entire industry chain. Radio frequency conformance test is one of the important contents of terminal te...

AI Technical Summary

Problems solved by technology

In the satellite communication environment, since the signal transmitted by the ground station equipment needs to be forwarded by the satellite to reach the terminal, conversely, the signal transmitted by the terminal also needs to be forwarded by the satellite and returned to the ground station, so the disadvantage is that the channel delay is large, and the test also needs Research on the characteristics of satellite channels

Images