1：Experimental Design and Method Selection:

The experiment involved analyzing the reflective characteristics of artificial landmarks to propose two feature parameters for extraction. The methodology included statistical analysis of laser data collected at different incident distances and angles.

2：Sample Selection and Data Sources:

Laser data was collected from reflectors placed in the environment, with variations in incident distances and angles to ensure comprehensive samples.

3：List of Experimental Equipment and Materials:

A laser ranger, a mobile robot, and a reflector were used. The laser ranger's specifications included a measurement range of 0.1 to 30m, a wave length of 905nm, and a scan frequency of 10 to 20Hz.

4：1 to 30m, a wave length of 905nm, and a scan frequency of 10 to 20Hz. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: The laser ranger was fixed, and the reflector was placed on a mobile robot that moved backwards at a constant speed while rotating to vary incident angles. Data was collected at each distance and angle.

5：Data Analysis Methods:

The collected data was analyzed to determine the thresholds for reflected light intensity and the number of continuously collected points, and to measure the effective detection range of the laser ranger.