基于罗兰C磁天线的高精度数字移相算法研究  

Research on signal synthesis of Loran-C omni-directional h-field antenna with high-precision digital phase shift algorithm

作　　者：崔国恒[1] 许江宁[1] 曹可劲[1] 朱银兵[1] 

机构地区：[1]海军工程大学导航工程系,湖北武汉430033

出　　处：《计算机工程与设计》2011年第4期1513-1516,共4页Computer Engineering and Design

摘　　要：在介绍罗兰C全向磁天线设计方法和接收特性的基础上,针对全向磁天线信号合成中的数字移相环节,设计了一种高精度数字移相算法,该算法突破了传统数字移相算法移相精度受信号采样率限制的缺陷,实现了信号的高精度数字移相。利用罗兰C标准脉冲信号对移相算法进行了仿真计算,并用实际采集的罗兰C信号进行了验证,结果均表明了算法的正确性和优越性。该算法具有计算过程简单,易于采用高性能硬件逻辑可编程芯片FPGA/CPLD来实现,在罗兰C全向磁天线设计中获得了较好的应用效果。The process of designing omni-directional H-field antenna is introduced and the characteristic of omni-directional H-field an-tenna is analyzed.With the problem of digital phase shift in signal synthesis,a new algorithm is designed.The new algorithm has more advantage than traditional algorithm.It can achieve high-precision digital phase shift without high speed hits.Both simulation results and actual signal experiments indicated that the high-precision digital phase shift algorithm is right and efficiency.The calculate process of the algorithm is simple and can be implemented easily in FPGA/CPLD.The algorithm gained good effect on omni-directional H-field antenna designing.

关 键 词：罗兰C 全向磁天线 高精度 数字移相 信号合成 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]