Coastal zone SBT-DEM construction method based on unmanned aerial vehicle and unmanned ship

• Main Authors: SHANG WEITAO, GAO ZHIQIANG, CAO BAOJIE
• Format: Patent
• Language: Chinese; English
• Published: 04.11.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GYROSCOPIC INSTRUMENTS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

The invention discloses a coastal zone SBT-DEM construction method based on an unmanned aerial vehicle and an unmanned ship, and the method comprises the steps: S1, carrying out the measurement of the landform and water depth of a coastal zone through an unmanned aerial vehicle laser radar and a depth-sounding unmanned ship in a coastal zone measurement region; s2, performing error correction, coordinate calculation and reference conversion processing on the original land point cloud data measured by the unmanned aerial vehicle and the water depth data measured by the unmanned ship to obtain land and seabed three-dimensional coordinate points of a measurement area in the same coordinate system; and S3, a geographic information system spatial data processing method is used to respectively obtain land DEM and seabed DEM, seamless mosaic processing is carried out, and a coastal zone SBT-DEM is obtained. The problems that in the prior art, the water depth precision of a coastal shallow water area is low, the spat