摘要
星载激光高度计能够获取高精度的地面高程信息,可作为卫星光学遥感影像三维测图的补充。星载激光高度计的高程测量精度很高,但是平面精度较低。为了能够更有效的利用星载激光测高数据,需要研究星载激光高度计几何定位的误差源及其对定位精度的影响。文章从星载激光高度计几何定位模型出发,推导了星载激光高度计定位误差传播模型,得到影响星载激光高度计测高数据定位精度的主要误差源,并分析了各误差源对定位精度的影响,可以为星载激光高度计的设计和应用提供一定参考。
As a way of acquiring elevation with high accuracy, space-borne laser altimeter improves the capability of 3-dimensional cartography of satellite optical remote sensing imagery. However, the plane accu-racy of space-borne laser altimeter is not so high as its elevation accuracy. Accordingly, the error sources and their influences on space-borne laser altimeter geometric positioning are studied in this paper. The geometric positioning of space-borne laser altimeter is first modeled, then error propagation of the model is studied, and the main error sources of space-borne laser altimeter geometric positioning are obtained. Finally the influences of each error sources on space-borne laser altimeter geometric positioning are analysed, which can be as the references for space-borne laser altimeter designing and application.
出处
《航天返回与遥感》
2014年第2期81-86,共6页
Spacecraft Recovery & Remote Sensing
基金
国家科技支撑计划(2011BAB01B03)
国防973项目(61321001)
关键词
星载激光高度计
误差传播
几何定位
定位精度
space-borne laser altimeter
error propagation
geometric positioning
positioning accuracy
