Digital intermediate frequency measurement and control platform based on embedded technology

Abstract

A digital intermediate frequency measurement and control platform based on the embedded technology comprises an FPGA, an analog-to-digital converting module, a digital-to-analog converting module, an ARM embedded processor, an embedded web server module, a matching isolating module, a storage unit, a temperature measuring circuit, and the like. The FPGA is the core device of the digital intermediate frequency measurement and control platform and used for transmitting and receiving digital intermediate frequency signals. The FPGA comprises an ARM interface module, a parameter configuration management module, a transmitting and receiving FIFO, a frame generating and counting module, a frame receiving and counting module, a code conversion module, a subcarrier modulation / demodulation module, a carrier modulation / demodulation module, a digital up and down frequency conversion module, an amplitude control module, a waveform storage module and a time mark management module. By the digital intermediate frequency measurement and control platform based on the embedded technology, digital processing of satellite measurement and control intermediate signals is achieved. In addition, the platform is compact in structure, small in size, good in portability, and suitable for being carried about by testers, and the platform can be used as comprehensive base band equipment for satellite testing.

Description

technical field [0001] The invention relates to a digital intermediate frequency measurement and control platform based on embedded technology, which belongs to the technical field of satellite testing. Background technique [0002] The digital intermediate frequency measurement and control platform is a comprehensive baseband device for satellite testing, which realizes the interconnection between ground testing equipment and satellites in video or intermediate frequency under the UCB (Unified C-band) and USB (Unified S-band) measurement and control systems. It is an essential uplink and downlink channel in satellite testing. [0003] With the development of aerospace technology, the ground measurement and control test system of communication satellites requires high reliability, multiple functions, high integration and miniaturization of the system, and the baseband equipment currently used in satellite testing has redundant functions, complex connection relationships, and...

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