摘要
相控阵卫星跟踪系统是一个庞大、复杂的闭环系统,主要包含卫星及其发射信号、相控阵接收天线、基带信号处理单元、波束指向控制四个部分。为了解决卫星自跟踪系统在实验中对实时性的要求,降低测试成本和测试难度,设计了一套运动平台卫星自跟踪闭环实验系统。上位机完成了运动目标建模和波束指向控制功能,基于FPGA的四通道硬件板完成接收信号的产生,自跟踪基带数字板完成基带信号的搜索、测角和跟踪滤波,各部分之间通过SMA或串口进行连接。对每一部分作了理论分析和硬件设计描述,并在最后给出了测试结果,表明了演示系统的可行性和有效性。
Phased array satellite tracking system is a large and complex closed-loop system,which consists of four parts：satellite and its transmitting signal,phased array receiving antenna,baseband signal processing unit and beam pointing control.In order to solve the real-time requirement of satellite auto-tracking system in experiment and reduce the cost and difficulty of testing,this paper designs a set of motion platform based satellite auto-tracking closed loop experiment system.The host computer completes the moving target modeling and beam pointing control function.The FPGA-based four-channel hardware board performs the received signal generation.The auto-tracking baseband digital board carries out the baseband signal search,angle measurement and tracking filtration.These parts are connected by SMA or serial interface.The theoretical analysis and hardware design of each part are given.Finally,the test results are given,which shows the feasibility and effectiveness of the demonstration system.
出处
《雷达科学与技术》
北大核心
2017年第4期421-426,432,共7页
Radar Science and Technology
关键词
相控阵
演示系统
上位机
自跟踪
phased array
closed loop experiment system
host computer
auto tracking
