增强型罗兰信号周期检测方法.pdf

·18· 现代导航 2021 年
增强型罗兰信号周期检测方法
孙 晶 1，战兴华 1，陈俊喆 2
（1 中国人民解放军 91001 部队，北京 100036；2 中国电子科技集团公司第二十研究所，西安 710068）
摘要：增强型罗兰接收机的脉冲信号周期检测准确性直接影响其导航定位与定时精度。针对
现有周期检测方法的不足，以线性数字平均提高信噪比为基础，采用峰峰比检测法和极性判决法
实现对脉冲信号的联合检测，通过仿真验证了该方法的有效性和抗噪性能，为现代化数字增强型
罗兰接收机的高精度导航定位与定时奠定了基础。
关键词：增强型罗兰；周期检测；峰峰比检测
中图分类号：TN961 文献标识码：A 文章编号：1674-7976-(2021)-01-018-05
Detection Method of Enhanced Loran Signal Cycle
SUN Jing，ZHAN Xinghua，CHEN Junzhe
Abstract: The accuracy of pulse signal cycle detection of enhanced Loran receiver will directly affect its navigation,
positioning and timing accuracy. Aiming at the shortcomings of cycle detection method, based on the linear digital average to
improve the signal-to-noise ratio, the peak-to-peak ratio detection method and the polarity determination method are used to realize
the joint detection of the pulse signal. The validity and anti-noise performance of the method are verified by simulation, which lays
the foundation for high-precision navigation positioning and timing of modern digital enhanced Loran receiver.
Keywords: Enhanced Loran; Cycle Detection; Peak-Peak Ratio Detection