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Combined positioning method for deepwater gravel foundation bed
The invention provides a combined positioning method for a deepwater gravel foundation bed. The combined positioning method comprises the following steps: acquiring absolute position data of a working platform through GNSS-RTK (Global Navigation Satellite System-Real-Time Kinematic); the mounting distance of the transmitting and receiving unit relative to the working platform and the mounting distance of a lower swing movable pulley on the side surface of the measuring tower relative to the working platform are obtained; the ultra-short baseline measurement system calculates the position of the underwater beacon relative to the transmitting and receiving unit; the ultra-short baseline measurement system calculates the relative position and direction of the leveling device; calculating the relative elevation of the leveling device; and the absolute plane position, direction and elevation of the leveling device are obtained. Plane measurement and elevation measurement are separated according to different precision requirements of plane measurement and elevation measurement, an ultra-short base line is adopted for the plane, and stay wire measurement is adopted for the elevation. High-precision measurement of deepwater elevation is achieved, and leveling of a hectometer-level deepwater foundation bed becomes possible. The fixed measuring tower is adopted as a measuring basis, and compared with a traditional shipborne measuring scheme, attitude and heading correcting instruments such as a motion sensor and an electric gyrocompass are not needed, so that the measuring precision is improved.
本发明提供一种深水碎石基床的组合定位方法，包括通过GNSS‑RTK获得工作平台的绝对位置数据；得到发射接收单元相对于工作平台的安装距离，以及测量塔侧面的下摆动滑轮相对工作平台的安装距离；超短基线测量系统计算水下信标相对于发射接收单元的位置；超短基线测量系统计算整平装置的相对位置和方向；计算整平装置的相对高程；获得整平装置的绝对平面位置、方向和高程。根据平面、高程测量精度要求的不同，将平面、高程测量分开，平面采用超短基线，高程采用拉线测量。实现了深水高程的高精度测量，使百米级深水基床整平成为可能。采用固定的测量塔作为测量基准，与传统船载测量方案相比，无需运动传感器、电罗经等航姿校正仪器，提高了测量精度。
Combined positioning method for deepwater gravel foundation bed
The invention provides a combined positioning method for a deepwater gravel foundation bed. The combined positioning method comprises the following steps: acquiring absolute position data of a working platform through GNSS-RTK (Global Navigation Satellite System-Real-Time Kinematic); the mounting distance of the transmitting and receiving unit relative to the working platform and the mounting distance of a lower swing movable pulley on the side surface of the measuring tower relative to the working platform are obtained; the ultra-short baseline measurement system calculates the position of the underwater beacon relative to the transmitting and receiving unit; the ultra-short baseline measurement system calculates the relative position and direction of the leveling device; calculating the relative elevation of the leveling device; and the absolute plane position, direction and elevation of the leveling device are obtained. Plane measurement and elevation measurement are separated according to different precision requirements of plane measurement and elevation measurement, an ultra-short base line is adopted for the plane, and stay wire measurement is adopted for the elevation. High-precision measurement of deepwater elevation is achieved, and leveling of a hectometer-level deepwater foundation bed becomes possible. The fixed measuring tower is adopted as a measuring basis, and compared with a traditional shipborne measuring scheme, attitude and heading correcting instruments such as a motion sensor and an electric gyrocompass are not needed, so that the measuring precision is improved.
本发明提供一种深水碎石基床的组合定位方法，包括通过GNSS‑RTK获得工作平台的绝对位置数据；得到发射接收单元相对于工作平台的安装距离，以及测量塔侧面的下摆动滑轮相对工作平台的安装距离；超短基线测量系统计算水下信标相对于发射接收单元的位置；超短基线测量系统计算整平装置的相对位置和方向；计算整平装置的相对高程；获得整平装置的绝对平面位置、方向和高程。根据平面、高程测量精度要求的不同，将平面、高程测量分开，平面采用超短基线，高程采用拉线测量。实现了深水高程的高精度测量，使百米级深水基床整平成为可能。采用固定的测量塔作为测量基准，与传统船载测量方案相比，无需运动传感器、电罗经等航姿校正仪器，提高了测量精度。
Combined positioning method for deepwater gravel foundation bed
一种深水碎石基床的组合定位方法
WU XUEFENG (author) / LIU XIUCHENG (author) / LI TAO (author) / LI XIANG (author) / WEN HUADONG (author) / XIAO HAO (author) / YANG JIA (author) / FAN CHENYANG (author)
2024-08-27
Patent
Electronic Resource
Chinese
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