| 浅海海底控制点水平坐标的简化计算方法 |
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| 引用本文： | 孙文舟,殷晓冬,马卓希,李树军.浅海海底控制点水平坐标的简化计算方法[J].海洋测绘,2018(4):31-33. |
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| 作者姓名： | 孙文舟 殷晓冬 马卓希 李树军 |
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| 作者单位： | 海军大连舰艇学院海洋测绘系;61363部队 |
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| 基金项目： | 国家重点研发计划(2016YFB0501701)；国家自然科学基金(41474015) |
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| 摘 要： | 提出了一种在声速剖面未知的条件下计算海底控制点水平坐标的方法,根据流体静力学方程将海底应答器的压力值转化为深度值,并以此深度值作为等效声速剖面法的参考深度,基于等效声速剖面法与船底换能器到海底应答器声波的传播时间计算各历元的测距值,通过圆走航利用距离交会法确定海底控制点水平方向的坐标。松花湖的实验表明,这种方法可以获得较高精度的浅海海底控制点水平方向的坐标。
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| 关 键 词： | 海底控制网 等效声速剖面法 压力传感器 圆走航 距离交会定位 |
Simplified Method for Horizontal Coordinates of Seafloor Control Points in Shallow Water |
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| SUN Wenzhou,YIN Xiaodong,MA Zhuoxi,LI Shujun.Simplified Method for Horizontal Coordinates of Seafloor Control Points in Shallow Water[J].Hydrographic Surveying and Charting,2018(4):31-33. |
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| Authors: | SUN Wenzhou YIN Xiaodong MA Zhuoxi LI Shujun |
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| Abstract: | A method for calculating the horizontal coordinates of seafloor control points without sound speed profile is put forward.The pressure is converted into depth based on the hydrostatic equation,which will be used as a reference depth for the equivalent speed profile method.The geometrical distance from the transponder on the seafloor and the transducer under the ship will be calculated by the equivalent speed profile method and propagation time.In addition,the horizontal coordinates of the seafloor control point are determined by using the distance intersection method.Finally,the experiment in Songhua Lake proved the effectiveness of this method. |
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