| 互相关函数法在海底微地形测量中的应用研究 |
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| 引用本文： | 周知进,卜英勇,罗柏文.互相关函数法在海底微地形测量中的应用研究[J].测绘科学,2009,34(1). |
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| 作者姓名： | 周知进 卜英勇 罗柏文 |
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| 作者单位： | 1. 中南大学机电工程学院,长沙,410083;湖南科技大学机电工程学院,湖南湘潭,411201
2. 中南大学机电工程学院,长沙,410083 |
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| 摘 要： | 根据主动式水下测距原理,采用超声波换能器向模拟海底微地形发射超声波。由于超声回波信号与参考信号具有强互相关的特性,求出两者的互相关系数以及最大互相关系数对应的采样点位置,从而获得超声波传播时间。通过试验研究表明,采用互相关方法应用于海底微地形测量具有较高的测量精度,能够满足水下微地形高程测量的需要。
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| 关 键 词： | 主动式水下测距 互相关函数法 最大互相关系数 微地形 |
Study on the utrasonic distance measurement system for seabed microtopography |
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| ZHOU Zhi-jin,BU Yin-yong,LUO Bo-wen.Study on the utrasonic distance measurement system for seabed microtopography[J].Science of Surveying and Mapping,2009,34(1). |
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| Authors: | ZHOU Zhi-jin BU Yin-yong LUO Bo-wen |
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| Abstract: | According to active underwater measuring location principle,the ultrasonic transducer is launched ultrasonic for simulating submarine terrain.Because the ultrasonic echo signal and reference signal have strongly inter-related characteristics,maximum relations to the sampling location would be gained.Utrasonic propagation time is obtained.Experimental results show that cross-correlation method for measuring seabed topography has highly accuracy.It will be able to meet the underwater Micro-topography measurement requirement. |
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| Keywords: | active distance measureme cross-correlation method maximum cross-correlation coefficient micro-topography |
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