CONSTRUCTION OF SENSING UNIT MOUNTED ON A CAR AND ITS EVALUATION BY MEASUREMENT EXPERIMENTS

Abstract

 Mobile Mapping System (MMS) is used for maintenance of civil infrastructures such as roads and rivers, and generation of high precision three-dimensional map for autonomous driving. However, it is difficult for all local govenments to use MMS because it is very expensive. Though we designed vehicle-mounted sensing unit with commercially available and non-expensive sensors, the unit had problems in the unit shaking and sensors installation position. In this research, new unit designed and constructed for generating high-precision three-dimensional spatial data. It solves problems of the existing unit. And, we devised analyzing method for generating three-dimensional spatial data by proposed unit. Through measurement experiments, we confirmed that the proposed unit can generate high-density point cloud data within the catalog specifications of laser scanner and GNSS.