| 基于摆动式单波束探测的微地形高程数据平滑算法研究 |
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| 引用本文： | 罗柏文,赵前程,夏毅敏,卜英勇,刘平. 基于摆动式单波束探测的微地形高程数据平滑算法研究[J]. 湖南科技大学学报(自然科学版), 2010, 25(1) |
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| 作者姓名： | 罗柏文 赵前程 夏毅敏 卜英勇 刘平 |
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| 作者单位： | 1. 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,湖南,长沙410083 |
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| 基金项目： | 湖南省教育厅项目，国家自然科学基金资助项目 |
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| 摘 要： | 在摆动式超声单波束探测水下微地形中,高程数据的随机误差不可避免地影响地形绘制质量及未测地形预测精度.结合摆动式单波束探测特点,提出了一种改进型中值滤波算法,即根据背向超声波的地形坡面无法被探测的特点,首次引入地形坡度变化小于的经验准则确定跃变点最小间隔,再利用最小间隔判断测点是否为跃变点.在实际应用中,利用6条测线的高程数据,由标准中值滤波与改进型中值滤波进行比较.结果表明:改进型中值滤波算法能更好地保护地形特征点.
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| 关 键 词： | 单波束 微地形 高程 中值滤波 地形特征点 |
Study on elevation data smoothing algorithm based on micro-terrain detection with pendulum single beam |
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| LUO Bo-wen,ZHAO Qian-cheng,XIA Yi-min,BO Ying-yong,LIU Ping. Study on elevation data smoothing algorithm based on micro-terrain detection with pendulum single beam[J]. Journal of Hunan University of Science & Technology(Natural Science Editon), 2010, 25(1) |
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| Authors: | LUO Bo-wen ZHAO Qian-cheng XIA Yi-min BO Ying-yong LIU Ping |
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| Affiliation: | LUO Bo-wen1,ZHAO Qian-cheng,XIA Yi-min2,BU Ying-yong2,LIU Ping1 (1. College of Electrome chanical Enginerning,Hunan University of Science , Technology,Xiangtan 411201,China,2. School of Mechanical , Electrical Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | In the pendulum single beam bathymeter to detect underwater micro-terrain,the random errors of the elevation data inevitably affect the quality of terrain mapping and terrain prediction accuracy is not measured.Used the characteristics of pendulum single beam detection,an improved median filtering algorithm was proposed.Based on ultrasonic integrated backscatter of the terrain surface characteristics could not be detected,for the first time the introduction of changes in the terrain slope was less than of t... |
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| Keywords: | single beam micro-terrain elevation median filter terrain feature point |
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