| Loran-C信号中直达波与反射波的提取方法研究 |
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| 引用本文： | 黄显良,戚浩,郁建芳,谢石文,王琐琛,杨波,夏仕安. Loran-C信号中直达波与反射波的提取方法研究[J]. 地震工程学报, 2017, 39(4): 662-666 |
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| 作者姓名： | 黄显良 戚浩 郁建芳 谢石文 王琐琛 杨波 夏仕安 |
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| 作者单位： | 安徽省地震局, 安徽 合肥 230031;大别山地震监测预报实验场, 安徽 六安 237001,安徽省地震局, 安徽 合肥 230031;大别山地震监测预报实验场, 安徽 六安 237001,安徽省地震局, 安徽 合肥 230031;大别山地震监测预报实验场, 安徽 六安 237001,安徽省地震局, 安徽 合肥 230031;大别山地震监测预报实验场, 安徽 六安 237001,安徽省地震局, 安徽 合肥 230031,安徽省地震局, 安徽 合肥 230031,安徽省地震局, 安徽 合肥 230031;大别山地震监测预报实验场, 安徽 六安 237001 |
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| 基金项目： | 地震科技星火计划（XH15021）；安徽省自然科学基金面上项目（1708085MD93）；中央引导地方专项资金科技惠民项目（2016080802D117） |
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| 摘 要： | Loran-C信号中直达波和反射波到时差的提取是利用其进行测距的关键所在。通过分析Loran-C信号实测波形与理论波形的特征,认为两者所包含的直达波信号一致。基于此特征,通过波形相减的方法从实测Loran-C信号中剔除理论直达波信号,并结合互相关方法求解出直达波和反射波的到时差。
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| 关 键 词： | Loran-C信号 到时差 互相关 |
| 收稿时间： | 2017-07-07 |
A Study on the Extraction Method of Direct Wave and Reflected Wave in Loran-C Signal |
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| HUANG Xian-liang,QI Hao,YU Jian-fang,XIE Shi-wen,WANG Suo-chen,YANG Bo and XIA Shi-an. A Study on the Extraction Method of Direct Wave and Reflected Wave in Loran-C Signal[J]. China Earthguake Engineering Journal, 2017, 39(4): 662-666 |
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| Authors: | HUANG Xian-liang QI Hao YU Jian-fang XIE Shi-wen WANG Suo-chen YANG Bo XIA Shi-an |
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| Affiliation: | Earthquake Administration of Anhui Province, Hefei 230031, Anhui, China;Dabieshan Earthquake Experiment Field, Lu''an 237001, Anhui, China,Earthquake Administration of Anhui Province, Hefei 230031, Anhui, China;Dabieshan Earthquake Experiment Field, Lu''an 237001, Anhui, China,Earthquake Administration of Anhui Province, Hefei 230031, Anhui, China;Dabieshan Earthquake Experiment Field, Lu''an 237001, Anhui, China,Earthquake Administration of Anhui Province, Hefei 230031, Anhui, China;Dabieshan Earthquake Experiment Field, Lu''an 237001, Anhui, China,Earthquake Administration of Anhui Province, Hefei 230031, Anhui, China,Earthquake Administration of Anhui Province, Hefei 230031, Anhui, China and Earthquake Administration of Anhui Province, Hefei 230031, Anhui, China;Dabieshan Earthquake Experiment Field, Lu''an 237001, Anhui, China |
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| Abstract: | Determining the difference in arrival time between direct waves and reflected waves in the Loran-C signal is crucial for effectively using it for ranging.Based on the analysis of waveform characteristics of the measured waves and theoretical waves in Loran-C signal, it is considered that the direct wave signal included in the measured Loran-C signal is consistent with that in the theoretical signal.Therefore, the theoretical direct wave signal can be removed from the measured Loran-C signal via waveform subtraction, then the difference in arrival time between direct waves and reflected waves can be calculated by using cross-correlation method. |
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| Keywords: | Loran-C signal arrival time difference cross-correlation |
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