| 三步相关法确定伪随机码超声波测距的相关峰值 |
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| 引用本文： | 李增志,黄峰. 三步相关法确定伪随机码超声波测距的相关峰值[J]. 传感器世界, 2009, 15(7): 27-29,26 |
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| 作者姓名： | 李增志 黄峰 |
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| 作者单位： | 解放军理工大学气象学院,南京,211101;解放军理工大学气象学院,南京,211101 |
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| 摘 要： | 本文分析了伪随机码超声波扩频测距的原理,针对超声波伪随机码的特点,提出了一种分三步快速确定伪随机码相关峰值的方法.相对直接相关和分两步相关大大减小了运算量,有利于快速测量和减小硬件复杂度.
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| 关 键 词： | 超声波 伪随机码 三步相关法 |
Three-step correlation approach to finding correlation peak value in pseudo random code modulated ultrasonic distance measurement |
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| LI Zeng-zhi,HUANG Feng. Three-step correlation approach to finding correlation peak value in pseudo random code modulated ultrasonic distance measurement[J]. Sensor World, 2009, 15(7): 27-29,26 |
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| Authors: | LI Zeng-zhi HUANG Feng |
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| Affiliation: | LI Zeng-zhi,HUANG Feng (The PLA University of Science & Technology,Nanjing 211101,China) |
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| Abstract: | The theory of the pseudo random code modulated ultrasonic distance measurement is analyzed in this paper. A new method for finding correlation peak value based on three-step correlation approach is given ,considering the characteristics of the ultrasonic pseudo random code. Compared with the direct correlation and the two-step correlation approach ,the new method reduces the calculatedamount greatly,and is helpful to rapid measurement and reducing the hardware complexity. |
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| Keywords: | ultrasonic pseudo random code three-step correlation approach |
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