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| 超声波测距中多径效应的仿真研究 | |
| 引用本文： | 金生龙,刘赞毅,黄峰,王瑾,朱福萌. 超声波测距中多径效应的仿真研究[J]. 传感器世界, 2011, 17(1): 29-31,5 |
| 作者姓名： | 金生龙 刘赞毅 黄峰 王瑾 朱福萌 |
| 作者单位： | 金生龙,刘赞毅,黄峰,朱福萌,JIN Sheng-long,LIU Zan-yi,HUANG Feng,ZHU Fu-yin(解放军理工大学气象学院,江苏南京,211101);王瑾,WANG Jin(95809部队,河北沧州,061036) |
| 摘 要： | 超声波测距中的多径效应严重影响其测量精度,研究了由同一伪随机码相对初始时刻延时0、T/4、T/2、T/4(T为码周期)所产生的4个序列,经载波调制后序列的时延对其它序列自相关峰值的影响.研究表明,序列的时延对其它序列自相关峰值影响呈现规律性,对于克服超声波测距中多径干扰有较高的参考价值. |
| 关 键 词： | 多径效应 伪随机序列 循环相关 |
Study on simulation of multipath effect of ultrasonic ranging |
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| JIN Sheng-long,LIU Zan-yi,HUANG Feng,WANG Jin,ZHU Fu-yin. Study on simulation of multipath effect of ultrasonic ranging[J]. Sensor World, 2011, 17(1): 29-31,5 | |
| Authors: | JIN Sheng-long LIU Zan-yi HUANG Feng WANG Jin ZHU Fu-yin |
| Affiliation: | JIN Sheng-long~(1,2),LIU Zan-yi~1,HUANG Feng~1,WANG Jin~3,ZHU Fu-yin~1 (1.Institute of Meteorology,PLA University of Science.& Technology,Nanjing 211101,China,2 NO.95920 Army,Gucheng 253801,3 NO.95809 Army,Cangzhou 061036,China) |
| Abstract: | Multi-path effect of ultrasonic ranging affects the measuring precision seriously.Four sequences are generated from a pseudo-random code delayed 0,-T/4,-T/2,-T/4(T for the code period) relative to initial time and modulated by carrier. Studies on the affection of time-delay on the autocorrelation peak show that the affection presents regularity and have a high reference value to overcome multi-path interference in ultrasonic ranging. |
| Keywords: | multi-path effect pseudo-random sequence |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |