基于卫星定位技术的森林步道长度测量模型

Study on length measurement model of forest trail based on satellite positioning technology

本文对卫星定位测量森林步道长度的方法进行探讨,用模拟卫星轨迹线和步道线叠加后在纵向切面与横向水平面分别作对比分析,阐述卫星轨迹采集的长度与森林步道的实际长度差距大的原因,以及用实测数据,利用回归方法对森林步道长度随坡度变化的关系建模,最后确立森林步道长度计算模型:S=√D2+H2×{1.021+[tan-1(H/D)÷0.01745]×0.00759}。

The method of measuring the length of forest trail by satellite positioning is discussed in this paper.The reason why the distance between the length of satellite track and the actual length of forest trail is large is expounded by comparing the vertical section with the horizontal section after the superposition of simulated satellite track and trail line.With the measured data and regression method,the relationship between the length of forest trail and the gradient is modeled.Finally,the calculation model of forest trail length is established:S=√D^2+H^2×{1.021+[tan-1(H/D)÷0.01745]×0.00759}.