摘要
遥感卫星数传分系统主要负责对地传输星上有效载荷采集的数据。在没有星上有效载荷的情况下,为满足数传分系统在地面上的调试和测试需求,研究并设计了一种高速载荷数据模拟源,能够模拟输出4个通道的Ka波段最高300Mbps的连续数据流。设计以片内集成了PCIe硬核的Virtex-5系列的FPGA为核心控制器件,外围电路采用16片容量为8GB的非易失性NANDFlash作为高速数据缓冲单元,通过LVDS接口输出24路信号。实际应用表明,该高速载荷数据模拟源具有很好的通用性和灵活性,能够满足遥感卫星数传分系统的地面调试和测试要求。
The data transmission subsystem of remote sensing satellite is responsible for transmitting the data acquired by the payload.Without the payload of satellite,to satisfy the need of testing and debugging the data transmitting subsystem on the ground,a high-speed payload data source simulator is designed.It can continuously output 4channel Ka-band maximum 300 Mbps data stream.Virtex-5series FPGA integrated PCIe hard IP core as the centre control device,peripheral circuits adopting as many as 16chips of 8GB nonvolatile NAND Flash as high-speed buffer unit,the simulator sends the data to the data transmission subsystem through LVDS interface.The practical application shows that the high-speed payload data source simulator has good versatility and flexibility to meet ground testing and debugging requirements of the data transmission of remote sensing satellite subsystems.
出处
《电子测量技术》
2013年第8期115-118,共4页
Electronic Measurement Technology
