| 摘要: |
| 针对动中通系统在跟踪状态下可能失去空中目标、纯机械扫描系统搜索速度慢等问题，设计了一种基于现场可编程门阵列（FPGA）的新型动中通地面系统。系统天线接收的信号经射频处理输入数字信号处理器，运算得到相关信息，以判断目标方位。上位机控制整个系统的工作状态，有良好的人机交互，系统可在失去空中目标后快速搜索或跟踪。水平方向上由直流电机驱动天线阵对360°方位扫描覆盖，俯仰方向上采用不同角度的波束切换，在短时间内依据能量准则定位空中目标方位，提高了动中通系统的运行效率。 |
| 关键词: 动中通 地面跟踪系统 能量准则 波束切换 方位跟踪 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（61561010）；广西自然科学基金资助项目(2013GXNSFAA019323);广西科学研究与技术开发计划项目（桂科攻14122006-6）；广西教育厅科研立项项目（KY2015LX096）;广西无线宽带通信与信号处理重点实验室主任基金项目（GXKL061506） |
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| FPGA implementation of surface tracking system for a satellite communication on the move terminal |
| JIANG Liubing,ZHAO Jikui,CHE Li,XIAO Zhitao |
| () |
| Abstract: |
| To solve the problem that mobile satellite communication system may lose spacial targets in the tracking state and the search speed of mechanical scanning system is slow,a new mobile satellite communication system based on field programmable gate array(FPGA) is designed.The signal received by system antenna is sent to the digital signal processor through radio frequency(RF) processing,then the digital signal processor estimates target’s orientation according to related information.The working state of the whole system which has a good man-computer interaction is controlled by the upper computer and system can quickly search or track after losing spacial target.The antenna array is driven by a direct current(DC) motor in the horizontal direction to achieve 360 degree azimuth scanning coverage and beam switching with different angles is used in the pitch direction. The system can locate the spacial target position according to energy criterion in a short time,and the operating efficiency of the satellite communication on the move terminal is improved. |
| Key words: satellite communication on the move terminal surface tracking system energy criterion beam switching azimuth tracking |
