Obtain high-precision topographic data of key river sections during topographic survey of river sections, improve the accuracy of hydrological monitoring and forecasting, and meet the requirements of the "four pre-plans" measures of forecasting, early warning, rehearsal, and pre-planning. At this stage, the integration of water and underwater is an important measurement method. Compared with the traditional topographic survey of rivers, the integrated measurement of water and underwater has higher efficiency and more accurate data. The above-water and underwater integration means that the above-water part and the underwater part are topographically surveyed at the same time, and a unified map is formed through technical means. Hi-Target's underwater and underwater integration technology uses laser radar for the upper part, and multi-beam for the underwater part. The later data fusion uses a special software platform for data integration and management. Hi-Target uses PM1500 airborne lidar for the integration of water and underwater, which has high degree of automation, high data accuracy, high resolution, penetrability, and can be used in general terrain; at the same time, it cooperates with iBoatBS3 unmanned ship, iBoatBS3 unmanned ship adopts independent Open hole design, one boat can be used for multiple purposes, flexible and efficient, integrated ship control system, effective waterproof, stable and reliable; ducted propulsion device: effectively prevents entanglement, strong power. It can quickly generate topographic measurement results of water and underwater integration, and the accuracy of the results is better than 5 cm.
