摘要
在分析最小二乘 ( LS)估计预报森林蓄积可能存在缺陷的基础上 ,提出采用岭估计研究蓄积估测 ,并利用样地总蓄积预报偏差相对误差最小的方法 ,通过计算机仿真确定岭参数。实例计算表明 ,当影响蓄积估测的 RS和 GIS信息间存在复共线性时 ,用岭估计预报森林蓄积将优于
In this paper, based on the analysis of possible limitation of u si ng LS estimation predicting forest volume, the ridge estimate is put forward. Me anwhile, by means of the method that makes the deviation of the total predicting volume minimum, the ridge parameter is obtained through computer simulation. Th e real example indicates that when there are some multi-collinearities between the RS and GIS information that effecting volume estimation, ridge estimate is p rior to LS estimate in forest volume predicting.
出处
《遥感技术与应用》
CSCD
2001年第3期168-172,共5页
Remote Sensing Technology and Application
