PURPOSES : The purpose of this study was to quantitatively evaluate the variability of LiDAR performance indicators, such as intensity and Number of Point Cloud(NPC), according to various environmental factors and material characteristics.
METHODS : To consider the material characteristics of road safety facilities, various materials (Reference Material(RM), reflective sheet, matte sheet, granite, plastic, and rubber) were used in a darkroom, and the performance indicators of LiDAR were repeatedly measured in terms of changes in the measurement distance, rainfall, and angle of observation.
RESULTS : In the case of standard reflective materials, the intensity measurement value decreased as the measurement distance and rainfall increased. The NPC showed a tendency to decrease as the measurement distance increased, regardless of rainfall intensity. For materials with high-intensity values, it was found that rainfall intensity and color had negligible effect on the change in intensity compared with the measurement distance. However, for materials with low-intensity values, it was found that the measurement distance, rainfall intensity, and color all had a significant effect on the change in intensity.
CONCLUSIONS : For materials with high-intensity values, it was found that rainfall and color had negligible effect on change in intensity compared with the measurement distance. However, for materials with low-intensity values, the measurement distance, rainfall, and color all had a significant effect on the change in intensity value.

ABSTRACT
1. 서론
2. 선행연구 검토
3. 연구수행 방법
4. 분석 결과
5. 결론
REFERENCESHeinzler, R., Schindler,

• 최재륜(한국건설생활환경시험연구원 건설본부 연구원) | Choe Jae Ryun
• 조현우(한국건설생활환경시험연구원 건설본부 선임연구원) | Cho Hyun Woo
• 신홍철(한국건설생활환경시험연구원 건설본부 센터장) | Shin Hong Chol
• 정윤석(한국건설생활환경시험연구원 건설본부 수석연구원) | Chung Yoon Seok Corresponding author