基于罗兰C磁天线的高精度数字移相算法研究

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。

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

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....