Depth reference plane geodetic height measuring method based on PPP (Point -to-Point Protocol) technology

A measurement method and geodetic height technology, applied in height/level measurement, measurement of the depth of open-air water sources, measurement devices, etc., can solve the problems of limited operating distance and increase user operating costs, so as to reduce operating costs, improve operating efficiency, The effect of ensuring measurement accuracy

Active Publication Date: 2014-06-18
THE CHINESE PEOPLES LIBERATION ARMY 92859 TROOPS
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Problems solved by technology

The application of the above technology in bathymetry has the following disadvantages: 1. At least two GPS receivers are

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  • Depth reference plane geodetic height measuring method based on PPP (Point -to-Point Protocol) technology
  • Depth reference plane geodetic height measuring method based on PPP (Point -to-Point Protocol) technology
  • Depth reference plane geodetic height measuring method based on PPP (Point -to-Point Protocol) technology

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[0017] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0018] A depth datum geodetic height measurement method based on PPP technology is aimed at the disadvantages of traditional bathymetry and GPS differential bathymetry operation modes, and proposes the use of PPP technology (precision single point positioning technology) for depth datum geodetic height measurement operations. The main equipment installed on the berth includes dual-frequency GPS antennas and receivers, depth sounders, electronic compasses, etc. The operation requirements are as follows:

[0019] 1. The transducer and the dual-frequency GPS antenna are installed in a straight line. Before measurement, measure the distance from the transducer to the GPS antenna and the static draft; if it is difficult to install the transducer and the dual-frequency GPS antenna in a straight line, then The relative distance (dx, dy) and vertical dist...

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Abstract

The invention relates to a depth reference plane geodetic height measuring method based on a PPP (Point -to-Point Protocol) technology. The depth reference plane geodetic height measuring method is mainly and technically characterized in that by arranging a GPS (global position system) control net, a tide station and a known control point are simultaneously observed; if the known control point is not available in a measuring region, precise point positioning observation is adopted on the tide station, so that the geodetic height of a depth reference plane of the tide station in the measuring region is accurately obtained; a transducer and a double-frequency GPS antenna are arranged on a straight line, the water depth measurement operation is performed, GPS observation data acquired by a measuring line is subjected to precise point positioning calculation, and the geodetic height of the depth reference plane of each measure point is calculated; the water depth value measured by a depthometer and the geodetic height of the depth reference plane are utilized to calculate a charted result water depth. The depth reference plane geodetic height measuring method provided by the invention has the advantages that the design is reasonable, only one double-frequency GPS receiver is needed and the PPP technology is adopted to calculate a three-dimensional position of a water depth measure line, the geodetic height of the depth reference plane is accurately measured, the measuring accuracy is guaranteed, the operation cost is reduced, and the operation efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of marine surveying, in particular to a method for measuring the geodetic height of a depth reference plane based on PPP technology. Background technique [0002] In bathymetry, the sea surface is affected by factors such as tides, and the bathymetry data of the same point measured at different times is different, so it needs to be corrected to a unified starting plane, that is, the depth datum. At present, the relative accuracy of bathymetry in the elevation direction depends on the accuracy index of the bathymetry equipment (such as echo sounder, multi-beam bathymetry system), and generally can reach centimeter level, but its absolute positioning accuracy has a great difference with its operation mode. connect. Water depth measurement can be divided into differential positioning and single point positioning in terms of GPS positioning methods of its three-dimensional position. The application of differen...

Claims

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Application Information

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IPC IPC(8): G01C5/00G01C13/00G01S19/14
CPCG01C5/00G01C13/008G01S19/14Y02A90/30
Inventor 李凯锋欧阳永忠陆秀平吴太旗徐广袖王耿峰
Owner THE CHINESE PEOPLES LIBERATION ARMY 92859 TROOPS
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