一种通用卫星通信调制解调模块的设计

A Universal Modulation and Demodulation Module Board Design of Satellite Communication

为了研制一种可供多种卫星通信设备使用的基带处理模块,采用模块化设计和数字化设计的方法,设计了一种通用的、宽带数字调制解调模块。该产品在一个通用的硬件平台上实现了扩频码钟为3~4 Mc/s、信息速率为2.4~9.6 kb/s的扩频信号解调,以及信息速率为0.5~110 Mb/s的宽带信号BPSK、QPSK调制,根据速率和编译码方式及调制体制可配置为4种工作模式,且工作模式可通过监控指令控制切换。经过工程应用表明,该模块通过加载不同的FPGA程序,完全可以适应多个卫星通信设备的基带处理需求,是一个通用的产品。

For developing a baseband disposal module used by multiple satellite communication device, an universal and wideband digital modulation and demodulation module is designed with modularization and digital method. Based on an universal hardware, the developed product supports spread spectrum signal demodulation with spread spectrum clock of 3 - 4 Mc/s and message rate of 2.4 - 9.6 kb/s, and wideband BPSK/QPSK modulation with message rate of 0.5 -110 Mb/s. In addition, 4 working mode can be configured in accordance with rate, coding and modulation, which switched by control command. Project application indicates this module is an universal product completely suitable for baseband disposal need of multiple satellite communication devices.