A method for rapid positioning of lakebed basin and rapid determination of silt distribution and thickness

Abstract

The present invention relates to a technical field of target measurement, and discloses a method for rapid positioning of a lake bed basin and rapid measurement of silt distribution and thickness, including: a monitoring and early warning ship equipped with a dual-frequency depth sounder and a side-scan sonar cruises in the target area, The side-scan sonar and dual-frequency echo sounder send sound waves to the surroundings, and the interference suppression algorithm is used to strengthen the sound wave; the lake bed basin in the target area is located using the cross-location algorithm combined with dual-frequency echo sounder and side-scan sonar; Use the side-scan sonar to identify the silt sub-map around the lake bed basin, and use the closed-loop detection algorithm to detect the silt sub-map; use the silt probe to measure the depth of the lake bed and the thickness of the silt in the silt distribution area; analyze the data of the dual-frequency depth sounder Use surfer for quick mapping and generate a map of the survey results on the real geographic location. The invention also provides a system for quick positioning of lake bed basin and quick measurement of silt distribution and thickness. The invention realizes the rapid positioning and determination of the lake bed basin.

Description

technical field [0001] The invention relates to the technical field of target measurement, in particular to a method and system for rapid positioning of lakebed basins and rapid determination of silt distribution and thickness. Background technique [0002] At present, some reservoirs carry out various business activities for many years. There are many restaurants around the reservoirs, and fish cages on the water surface are densely covered. Due to the lack of supporting rain and sewage diversion facilities, the waste water from the catering industry distributed around the reservoir directly enters the reservoir, polluting the water body in the reservoir; when fish in cages are fed with feed and chemicals, feces and secretions will be dissolved and deposited. , bait leaching deposits, while causing pollution to the water body, these leaching deposits fall to the bottom of the silt reservoir, causing the water quality to decline year by year. [0003] Due to the long-term a...

AI Technical Summary

Problems solved by technology

Due to the lack of supporting rain and sewage diversion facilities, the waste water from the catering industry distributed around the reservoir directly enters the reservoir, polluting the water body in the reservoir; when fish in cages are fed with feed and chemicals, feces and secretions will be dissolved and deposited. , bait leaching deposits, while causing pollution to the water body, these leaching deposits fall to the bottom of the silt reservoir, causing water quality to decline year by year

[0003] Due to the long-term accumulation of pollution entering the reservoir, the silt at the bottom of the lake has a complex composition, containing organic pollutants, heavy metals and nutrients, which not only affects the water quality of the lake, but also has a negative impact on the surrounding environment of the lake and seriously damages the ecological environment.

In addition, reservoir siltation will cause a series of problems: it will lead to the loss of storage capacity, weaken the design function of the reservoir, and affect the normal benefit of the project; the burden of maintenance costs and hazards of reservoir siltation will continue to increase, which will accelerate the scrapping of the project; increase safety hazards, endanger engineering safety

[0004] The existing sonar-based lake bed basin positioning and silt distribution measurement algorithms need to establish multiple base stations. Due to the large number of stations in the multi-base, the amount of positioning information obtained is more, and there is also a large amount of redundant irrelevant information.

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