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- W4385486182 abstract "A traditional bathymetric LiDAR (light detection and ranging) has disadvantages such as large volume, heavy weight, necessity for airport and runway, and high cost for operation. For these reasons, this paper presents an off-axis four-reflection optical structure for single-band (532 nm) bathymetric LiDAR carried on UAV (Unmanned Aerial Vehicle). This optical system fully considers characteristics of the laser echo energy under different water conditions, which relate with the optical system parameters, such as peak power of laser emission, field of view (FOV), receiver aperture area, etc. The proposed optical system designs the objective lens, which are composed of one APD detector and two PMT detectors, the primary mirror, the second mirror, the plane mirror and the third mirror, two split field mirrors that separate the echo signals from shallow water, medium water and deep water, respectively. This proposed optical system was verified in laboratory tank, swimming pool, Lijiang River, lake, and the Qiaogang Sea Bay. It is found that the maximum water depth measured can reach 25.0 m with an error less than 0.1 m averagely. The dimension and weight of this LiDAR reach 90mm×160mm×90mm, and 10.25 kg, respectively, which is lightest and smallest bathymetric LiDAR worldwide." @default.
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- W4385486182 date "2023-01-01" @default.
- W4385486182 modified "2023-10-12" @default.
- W4385486182 title "Off-axis four-reflection optical structure for lightweight single-band bathymetric LiDAR" @default.
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- W4385486182 doi "https://doi.org/10.1109/tgrs.2023.3298531" @default.
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