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密闭狭小环境中多径信号对码环的影响 被引量:3

Effect of multipath signals to DLL in confined environment
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摘要 基于提高北斗接收机在密闭狭小环境中定位效果的目的,通过建立密闭狭小环境中多径信号的数学模型,选取直视信号与6路反射信号组成的复合信号进行分析,使用归一化非相干超前减滞后幅值法对信号进行鉴相,得到密闭狭小环境中多径信号造成的码相位误差,分析误差产生的原因。提出了一种通过布置吸波材料来减小北斗多径信号造成的码相位误差的方法,使多径信号造成的码相位误差减少90%。 To improve positioning accuracy of Beidou receiver in confined environment, modeling multipath signals in confined environment, analyze the output of EML discriminator under LOS and 6 multipath signals, derive the code phase error and explain the reason for it. Finally, give a method to reduce the error to 10%by arranging wave-absorbing materials.
出处 《电子设计工程》 2015年第16期62-64,共3页 Electronic Design Engineering
关键词 北斗接收机 多径信号 码环 密闭狭小 Beidou receiver multipath signal DLL confined environment
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