摘要
文中提供了一种快速的地表粗糙度参数测量的仪器及测试方法。基于激光测距原理,将激光测距传感器旋转,依次投射出激光点到待测目标上,形成一条具有相同间距的激光点剖线,处理器读取激光测距传感器的测量距离,然后计算出对应各点的垂直高度,再根据粗糙度计算公式得到地表粗糙度参数。将该仪器进行了野外测试试验,粗糙度试验测量结果的最大偏差不超过0.8 cm.试验结果表明:该测量仪器且具有结构简单、便携性好、自动化程度高、不易受人为影响等优点,可以应用于微波遥感或者土壤测量等试验中。
Based on the principle of laser ranging,laser ranging sensor rotatesand projects a serial of laser points to the target surface. Those points form a profile line with the same pitch. It measured distance data by laser sensor was read by the processor, and calculated to get he vertical height of each point. Then according to the formula of roughness, it calculated the surface rough- ness parameters. Finally, field experiments were carried on with this instrument. The maximum of average comparative error for measurement result was 0. 8 cm. Experimental results show that, the measurement instrument can be used for surface roughness measurement with instead of plate, and has the advantages of simple structure, good portability, high degree of automation, can be used in microwave remote sensing or soil measurement.
出处
《仪表技术与传感器》
CSCD
北大核心
2014年第4期22-24,共3页
Instrument Technique and Sensor
基金
国家重点基础研究发展计划项目(2013CB733405)
