Near-bottom multi-beam coordinate conversion processing method
A technology of coordinate conversion and processing method, which is applied in the field of near-bottom multi-beam coordinate conversion processing, which can solve problems such as low precision, low correction efficiency, and errors, and achieve the effects of efficient data processing, accurate and fast acquisition, and improved reliability
Inactive Publication Date: 2021-03-23
SHANDONG UNIV OF SCI & TECH
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[0003] Due to the complexity of the ocean environment and the measurement environment, the bathymetry data collected by the multi-beam bathymetry system contains various errors. Real-time performance, model errors during acoustic ray tracking, etc., the single correction of the above errors is low in efficiency and accuracy, and cannot meet the editing requirements of large batches of multi-beam bathymetric data. Therefore, it is necessary to study an efficient and systematic A Near-bottom Multi-beam Coordinate Transformation Processing Method
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[0046] see Figure 1-6 , a near-bottom multi-beam coordinate conversion processing method, comprising the steps of:
[0047] S1. Using the multi-beam sounding homing algorithm of concentric hyperbola intersection, construct a virtual transducer coordinate system, record the instantaneous state vector of the multi-beam transceiver transducer, and migrate the two vectors to coincide with the transmitting beam and receiving beam: use the transducer to install The calculation of the state vector of the transmitting and receiving transducers by the deviation angle and the instantaneous attitude angle involves a total of 12 angles, which are the installation deviation angles of the 3 transmitting transducers, the installation deviation angles of the 3 receiving transducers, and the instantaneous attitude angles at the moment of 3 beam transmissions. And the instantaneous attitude angles at the receiving moment of the three beams;
[0048] see image 3 and Figure 4 , to calculate t...
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The invention discloses a near-bottom multi-beam coordinate conversion processing method, which belongs to the technical field of submarine topography observation, and comprises the following steps ofS1, constructing a virtual transducer coordinate system by adopting a concentric hyperbolic intersecting multi-beam sounding homing algorithm, recording an instantaneous state vector of a multi-beamreceiving and transmitting transducer, and migrating the two vectors to coincide a transmitting beam and a receiving beam, and S2, representing the energy of the transmitting wave beam and the receiving wave beam by two regular conical surfaces with the same vertex, wherein the wave beam footprint is an intersection point of two intersected hyperbolic curves formed by the projection of the two conical surfaces on the seabed. Accurate and rapid near-bottom multi-beam data acquisition, error correction and coordinate conversion are realized, a concentric hyperbolic curve intersection multi-beamsounding homing algorithm is adopted, correction of various errors is performed by combining a beam transmitting moment and a receiving beam moment, a data processing flow is more practical, the dataprocessing flow is more efficient, and the reliability of the near-bottom multi-beam sounding data result is improved.
Description
technical field [0001] The invention relates to the technical field of seabed terrain observation, and more specifically, relates to a near-bottom multi-beam coordinate conversion processing method. Background technique [0002] The near-bottom multi-beam bathymetry system is one of the most important detection methods in ocean exploration. It can give the water depth values of hundreds or even thousands of measuring points in a plane perpendicular to the route at one time. [0003] Due to the complexity of the ocean environment and the measurement environment, the bathymetry data collected by the multi-beam bathymetry system contains various errors. Real-time performance, model errors during acoustic ray tracking, etc., the single correction of the above errors is low in efficiency and accuracy, and cannot meet the editing requirements of large batches of multi-beam bathymetric data. Therefore, it is necessary to study an efficient and systematic A near-bottom multi-beam...
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IPC IPC(8): G01S15/46G01S7/53G01S7/534
CPCG01S15/46G01S7/53G01S7/534
Inventor 罗宇武亭施剑李倩倩
Owner SHANDONG UNIV OF SCI & TECH