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Intercalibration method for underwater three-dimensional mapping laser line scan systems

机译：水下三维测绘激光线扫描系统的互标方法

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摘要

I present a method to calibrate absolutely a new family of underwater bathymetric laser scanner systems that use a single target range. Depth is calculated by triangulation among the source, the receiver, and the instantaneous position of a single spot produced by a highly collimated laser beam scanned across the target. For calibration, the refractive index of seawater is used to modulate the triangulation parameters rather than use of different target ranges to calibrate for extended range operation. Exploitation of a unique triangulation configuration allows the receiver characteristics to be ignored initially so that the scanner parameters can be determined. This allows the accurate positioning of the laser spot so that the receiver, in turn, can be calibrated. This intercalibration method provides high-resolution parameterization of the source-receiver characteristics and their geometric layout within the system so that an absolute bathymetric calibration can be realized in situ. In addition, a theoretical model derived to develop the methodology can be used to characterize and optimize future designs.
机译：我提出了一种绝对校准使用单个目标范围的新型水下测深激光扫描仪系统系列的方法。深度是通过三角测量源，接收器以及在目标上扫描的高度准直的激光束产生的单个光斑的瞬时位置来计算的。为了进行校准，海水的折射率用于调节三角测量参数，而不是使用不同的目标范围进行校准以进行扩展范围的操作。利用独特的三角测量配置可使接收器特性最初被忽略，从而可以确定扫描仪参数。这样可以精确定位激光点，从而可以对接收器进行校准。这种相互校准方法可对源-接收器特性及其在系统内的几何布局进行高分辨率参数化，从而可以在原位实现绝对水深校准。此外，为开发该方法而衍生的理论模型可用于表征和优化未来的设计。

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