精密单点定位技术在海洋测量中的应用研究

发布时间：2018-03-11 10:10

本文选题：精密单点定位　切入点：海洋测量　出处：《解放军信息工程大学》2013年硕士论文　论文类型：学位论文

【摘要】：本文对精密单点定位技术在海洋测量中的应用进行了深入研究，主要包括精密单点定位的原理与数学模型、解算结果的精度与可靠性评估以及该技术在海洋控制测量、无验潮水深测量和海洋重力测量中的应用等方面的内容。论文的主要工作和成果概括如下： 1.在分析精密单点定位技术原理及数学模型的基础上，比较了三种观测模型的主要区别，研究了影响精密单点定位精度的主要误差源及减弱和消除各种误差源的方法。 2.分别从内符合和外符合两方面对精密单点定位解算结果的精度进行了评估，深入研究了重复测量法、等价法和分半法三种精密单点定位解算结果的可靠性评估方法，结合实例对三种方法进行了比较分析，提出了提高精密单点定位解算结果精度和可靠性的措施。 3.将精密单点定位技术应用于海洋控制测量，，分析了不同观测时长和不同采样间隔对静态精密单点定位结果的影响，利用实测数据验证了精密单点定位在海洋控制测量中应用的可行性，重点探讨了远离大陆海岛礁的高等级控制测量应用问题。 4.将精密单点定位技术应用于无验潮水深测量，利用精密单点定位技术确定了验潮站的大地高，通过实测数据计算得到了高精度的水深测量成果，有效解决了传统差分定位方式作业范围受到距离限制的难题。 5.将精密单点定位技术应用于船载重力测量，通过比对基于精密单点定位测量模式和传统单点定位测量模式解算的交叉点不符值结果，验证了精密单点定位技术在船载重力测量中应用的可行性，解决了远海船载重力测量采用传统单点定位精度较低的问题。 6.将精密单点定位技术应用于机载海洋重力测量，通过分析比较几种速度、加速度测量方法的优缺点，结合海洋重力测量实际，确定了以位置差分法作为速度、加速度的测量方法。利用实测数据验证了精密单点定位技术在机载海洋重力测量中应用的可行性。
[Abstract]:In this paper, the application of precision single point positioning technology in ocean survey is deeply studied, including the principle and mathematical model of precision single point positioning, the accuracy and reliability evaluation of the solution results, and the application of this technology in ocean control measurement. The main work and results of this paper are summarized as follows:. 1. On the basis of analyzing the principle and mathematical model of precision single point positioning, the main differences of three observation models are compared, and the main error sources that affect the precision of single point positioning and the methods of weakening and eliminating all kinds of error sources are studied. 2. The accuracy of precision single-point positioning solution is evaluated from internal coincidence and external coincidence, and the reliability evaluation methods of repeated measurement, equivalence and split-half are studied in detail. In this paper, three methods are compared and analyzed with examples, and measures to improve the accuracy and reliability of the results of precision single point positioning are put forward. 3. The precision single point positioning technology is applied to ocean control measurement. The influence of different observation time and sampling interval on static precision single point positioning results is analyzed. The feasibility of the application of precise single point positioning in ocean control survey is verified by using the measured data, and the application of high grade control survey far away from continental islands and reefs is discussed emphatically. 4. The precise single point positioning technique is applied to the tidal depth measurement, and the geodetic height of the tidal station is determined by using the precision single point positioning technique. The high precision bathymetric results are obtained through the calculation of the measured data. It effectively solves the problem that the operating range of the traditional differential positioning method is limited by distance. 5. The precision single point positioning technology is applied to the shipborne gravity survey, and the results of intersection mismatch between the precision single point positioning measurement mode and the traditional single point positioning measurement mode are compared. The feasibility of applying precision single point positioning technology to shipborne gravity survey is verified, and the problem of low accuracy of traditional single point positioning in shipborne gravity survey is solved. 6. The precise single point positioning technique is applied to airborne marine gravity measurement. By analyzing and comparing the advantages and disadvantages of several velocity and acceleration measurement methods and combining with the actual marine gravity measurement, the position difference method is determined as the velocity. The feasibility of the application of precise single point positioning technique in airborne marine gravimetry is verified by using the measured data.
【学位授予单位】：解放军信息工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P229

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