A sounding data processing method combining single beam and towed measurement
A data processing and single-beam technology, which is applied to surveying instruments, surveying devices, surveying and navigation, etc., can solve problems such as complex topography, harsh measurement conditions, and large changes in tidal flat area, and achieve the effect of meeting the needs of engineering surveys
Active Publication Date: 2022-02-11
山东省国土测绘院
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Problems solved by technology
Since the intertidal zone is located at the junction of the land and the ocean, the terrain is complex, the terrain is changeable, the tidal flat area changes greatly between high and low tide levels, the measurement conditions are harsh, and the measurement is quite difficult. Any single traditional measurement method (bathymetry and land measurement) ) cannot complete all-terrain data collection
[0003] Water depth measurement has experienced the development of pole measurement method, weight hammer method and echo sounding method. Nowadays, various advanced single-beam and multi-beam sounding systems have been able to achieve high measurement accuracy, but for shoals with a water depth of less than 1 meter, All kinds of sounding instruments are unable to measure water depth effectively
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[0061] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0062] combine Figure 1 to Figure 3 , a water depth data processing method combining single beam and towed measurement, comprising a sounding device, the sounding device includes a carrier vehicle 1, and the carrier vehicle is provided with a GNSS antenna 2, an inertial navigation system 3, an encoder and a single beam sounding system , the encoder is connected to a drag measurement system.
[0063] The water depth data processing method includes the following steps:
[0064] Step 1: Establish a local coordinate system;
[0065] Coordinate origin O P Located at the phase center of the GNSS antenna, the vertical axis is Y P The axis points to the instantaneous heading, and the horizontal axis X P Point to the starboard direction of the ship, Z P Axis perpendicular to X P OY P The plane is upward; the coordinate syst...
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The invention provides a water depth data processing method combining single beam and towed measurement, including establishing a local coordinate system, using elevation transfer to directly calculate the elevation of the measurement point, and transferring the coordinates of the measurement point acquired by the towed measurement system from the local coordinate system to the earth A coordinate system that integrates the calculated coordinates and elevations of measurement points with single-beam measurement data. The water depth data processing method combining single beam and tow measurement provided by the present invention, the method combines single beam measurement data and tow measurement data, can efficiently and quickly acquire topographic data of the entire intertidal zone, and meets engineering measurement needs.
Description
technical field [0001] The invention relates to the field of intertidal zone surveying and mapping, in particular to a water depth data processing method combining single beam and towed measurement. Background technique [0002] The intertidal zone is the area between high and low tides where a river's estuary or coast is affected by tides, submerged at high tide and exposed to water at low tide. Since the intertidal zone is located at the junction of the land and the ocean, the terrain is complex, the terrain is changeable, the tidal flat area changes greatly between high and low tide levels, the measurement conditions are harsh, and the measurement is quite difficult. Any single traditional measurement method (bathymetry and land measurement) ) cannot complete all-terrain data collection. [0003] Water depth measurement has experienced the development of pole measurement method, weight hammer method and echo sounding method. Nowadays, various advanced single-beam and mul...
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IPC IPC(8): G01C15/00
Inventor 钟全宝祝明然张金营王观鹏王琚刘永贵
Owner 山东省国土测绘院