谭建伟,程春泉

• 1:中国电建集团江西省电力设计院有限公司
• 2:中国测绘科学研究院

摘要(Abstract)：

针对星载激光测高数据难以直接提取建筑区精确高程值的问题,该文提出一种利用渐进剥离全波形分解的建筑区影像高程控制点提取方法。首先,利用光斑区高分辨率遥感影像和数据质量属性参数挑选出高质量激光测高点;然后,通过渐进剥离全波形分解与整体拟合方法充分分解建筑区的复杂回波波形,并建立子波分量与建筑物不同平面层的精确对应关系;最后,结合激光测高和全波形激光脚点几何定位原理解算特征点的绝对高程值,作影像高程控制点使用。实验结果表明,3个回波波形经全波形分解和拟合后与原始回波信号之间整体的均方根误差、相关系数、决定系数和残差内积均值分别为0.023 7 V、0.978 3、0.957 0和0.332 9,制作的建筑影像高程控制点高程中误差为0.79 m,能够满足1∶50 000比例尺航空摄影测量对高程控制点的精度要求。

关键词(KeyWords)： 星载激光测高;渐进剥离;全波形分解;遥感影像;影像高程控制点

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 谭建伟,程春泉

DOI: 10.16251/j.cnki.1009-2307.2021.08.001

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