| 基于GPS PPK技术的远距离高精度验潮方法研究 |
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| 引用本文： | 汪连贺.基于GPS PPK技术的远距离高精度验潮方法研究[J].海洋测绘,2014(4):24-27. |
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| 作者姓名： | 汪连贺 |
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| 作者单位： | 天津海事测绘中心,天津300222 |
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| 摘 要： | 为实现远岸潮汐精确监测,基于GPS PPK技术开展了远距离高精度GPS验潮方法研究。研究给出了GPS潮位测量方法,其次联合GPS定位信息和IMU姿态信息,通过坐标转换原理得到瞬时水面的精确高程。在此基础上,研究利用基于FFT的低通滤波技术提取潮位信息。最后在烟台港进行了实际工程试验。试验结果表明,当GPS PPK验潮距离达98km时,潮位误差可控在!15cm以内,验潮精度仍可优于10cm。
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| 关 键 词： | GPS PPK 远距离 高精度 验潮 |
Research on High-precise Tidal Monitoring Method Based on GPS PPK Technique |
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| WANG Lianhe.Research on High-precise Tidal Monitoring Method Based on GPS PPK Technique[J].Hydrographic Surveying and Charting,2014(4):24-27. |
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| Authors: | WANG Lianhe |
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| Institution: | WANG Lianhe ( Tianjin Hydrographic Center, Tianjin 300222, China) |
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| Abstract: | To fulfill the precision monitoring of far-shore fide, this paper carries out the researches onhigh precise tidal observation and extraction over long distance based on GPS-PPK technology. Firstly, the method for longdistance GPS tidal observation is studied. Secondly, integratedwith the positioning information from GPS and attitude derived from inertial motion reference, the model for calculating the heightseries of instantaneous water surface is given out by studying the relationship between the coordinate systems. Based on the above, by studying the spectral characteristics of tidal level and wave and with help of Fast Fourier Transform technique, the method for tidal extraction is given out. And at last the related actual engineering test has been done in Yantai harbor. The practical engineering application shows that the precision of long distance GPS tidal measurement could achieved better than lOcm accuracy within 98km. |
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| Keywords: | GPS PPK long distance high precision tidal observation |
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