Depth sounding and width spanning performance calibration method of multibeam echosounder

A calibration method and multi-beam technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of self-calibration or comparison measurement results error, and the difficulty of ensuring the measurement reliability of multi-beam echo sounders.

Active Publication Date: 2018-12-18
TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Environmental factors such as tides, swells, profile sound velocity, and seabed undulations and topography introduce large errors to self-calibration or comparison measurement results, and it is difficult to guarantee the measurement reliability of multi-beam depth sounders

Method used

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  • Depth sounding and width spanning performance calibration method of multibeam echosounder
  • Depth sounding and width spanning performance calibration method of multibeam echosounder
  • Depth sounding and width spanning performance calibration method of multibeam echosounder

Examples

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Embodiment 1

[0085] A method for calibrating the sounding and span performance of a multi-beam echo sounder, characterized in that a total-station electronic speed measuring instrument is used as a measurement standard, and the measured value of the total-station electronic speed measuring instrument is used as an agreed true value. The electronic speed measuring instrument is placed on the control point on one side of the test pool, and the multi-dimensional operation control mechanism is set on the test pool. The test pool is a closed cuboid pool with a length of not less than 180m, a width of not less than 20m and a depth of not less than 8m. The multi-dimensional operation control mechanism is Realize the structure of multi-degree-of-freedom control of lifting, rotation, and horizontal displacement. The side wall of the test pool is used as a standard reflector. By comparing the measured value of the multi-beam echo sounder with the agreed true value, the sounding depth and span of the m...

Embodiment 2

[0115] In this embodiment, the seabat8125 multi-beam depth sounder is used as the tested equipment,

[0116] The total station type electronic speed tester is used as the measurement standard, the total station type electronic speed tester adopts the calibrated total station type electronic speed tester, and other instruments also use calibrated instruments, the total station type electronic speed tester measures The value is taken as the agreed true value, the total station type electronic speed measuring instrument is placed on the control point on the side of the test pool 4, and the multi-dimensional operation control mechanism is set on the test pool.

[0117] The multi-dimensional operation control mechanism includes a horizontal displacement part 5-15, a rotary part 5-16, a lifting part 5-17 and an adapter flange part 5-18, and the rotary part 5-16 is set on the horizontal displacement part 5-15, and the lifting One end of the part 5-17 is connected with the rotary part...

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Abstract

The invention relates to a depth sounding and width spanning performance calibration method of a multibeam echosounder. A total station electronic tacheometer is used as a measurement standard device,a measured value of the total station electronic tacheometer is used as a conventional true value, the total station electronic tacheometer is placed on a control point on one side of a test pool, aside wall of the test pool is used as a standard reflecting plate, a multi-dimensional operation control mechanism is arranged on the test pool, a multibeam echosounder to be tested is installed on the multi-dimensional operation control mechanism, and a calibration result of depth sounding and width spanning performance parameters of the multibeam echosounder is obtained by the comparison of themeasured value and the conventional true value of the multibeam echosounder. The depth sounding and width spanning performance calibration method provided by the invention has the beneficial effects that, the longitudinal depth sounding is replaced with underwater lateral ranging, full-range depth sounding performance calibration within the range of 175 m can be achieved by adjusting a transmitting horizontal sector of a transducer array to be perpendicular to a short side wall of the pool, full-width width spanning performance calibration under the condition of 16-m water depth can be achieved by adjusting the transmitting horizontal sector of the transducer array to be perpendicular to a long side wall of the pool, and the depth and width spanning calibration requirements of the multibeam echosounder in shallow water fields such as port and waterway, marine traffic engineering and near shores and the like can be met.

Description

technical field [0001] The invention belongs to the technical field of measurement of underwater surveying and mapping instruments, and in particular relates to a device and method for calibrating depth and span performance of a multi-beam depth sounder. Background technique [0002] Multi-beam echo sounder has become the mainstream sonar equipment for underwater terrain survey due to its unique advantages of full coverage and efficient sounding. The sounding performance calibration is the main means to ensure the accuracy and reliability of the traceability performance of the sounding value of the multi-beam echo sounder. [0003] At present, there are only a handful of laboratories in my country that can carry out the measurement and calibration of the sounding performance of multi-beam echo sounders. This is mainly because the calibration of multi-beam echo sounders requires the support of a large test pool. Due to the limited size of the pool, the calibration range is ge...

Claims

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Application Information

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IPC IPC(8): G01S7/52
CPCG01S7/52004
Inventor 曹玉芬窦春晖倪文军韩鸿胜柳义成曹媛媛周振杰高术仙张璇高辉赵晖李妍吴晓雪李绍辉
Owner TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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