Study On A Bathymetric Survey Method For Near-shore Shallow Water With Wave Motion

Shallow water detection is a very important field in the application of hydrology.Shallow water detection includes detection of water depth,underwater types,and obstacles in water.Shallow water detection has many important applications,and it has great application needs and value in military and civilian fields.With the release of the national strategic plan,the demand for near-shore shallow water detection has greatly increased.In order to serve the Hong Kong-Macao Bay Area,Pearl River Delta World-class port groups and strategic plans such as “Blue Bay” and “Smart Ocean”,based on the effects of waves on underwater detection,this paper focuses on the characteristics of near-shore shallow water detection and studies a shallow water scanning method.At the same time,based on this method,a high-efficiency underwater detection system suitable for shallow water detection is developed,which has certain engineering significance for improving efficiency and accuracy of shallow water detection.The main work of this paper is as follows:1.This paper studies a shallow water scanning detection method.Shallow water echo time and surface wave action is exploited to analyze the depth of wave detection process,and attitude monitoring is used to perform sounding point correction.It can improve detection accuracy,increase detection range,and achieve the detection effect with the wave scan.2.Since the attitude monitoring in the sweep detection method is realized by the sensor,so the attitude monitoring error is introduced.This paper studies the error of the attitude monitoring and its effect on the correction result of the sounding point.3.Based on shallow water detection requirements and scene characteristics,a small-scale,low-cost,highly-efficient and flexible underwater detection system is developed.The system proposes a design scheme in which the front-end detection side and the back-end processing side are separated from each other to implement motion detection and remote detection.I am mainly responsible for the design and implementation of the background processing and implement the follow-wave scanning detection method in the data processing of the background processing end.4.The shallow water depth detection experiment and result analysis are carried out using the developed system.The experiment verifies the accuracy and feasibility of the wave-guided scanning detection method studied in this paper.At the same time,the reliability of the developed shallow water detection system is also verified.