Abstract
This experiment involves a newly developed measuring system of the ground surface. The new system can measure the relative distance between the sensor and the ground surface, and it can easily record the profile data using a personal computer. In this experiment, we analyzed the measurement error of the laser sensor, onforest ground surfaces. It was found that the measurement error was less than 2mm throughout the measuring range of the laser sensor. It was also found that there was a relationship between the measuring error and the wetness of the ground surface; however, no relationship was found between the measuring error and changes in the ground surfaces colors. Results from the actual trial of the prototype device demonstrated the potential of the newly developed measuring system.
