摘要
本文从理论分析出发,在合理的假设条件下确立了航空扫描仪响应值与地面有效反射亮度成线性的数学模式并给出有关参数的确切物理含义。 在野外测试条件下,解决了绝对参量(即太阳在地面的反射辐射亮度)的测量方法,并使同步测量实际可行。 根据金海湖、高阳、安新县等地区的航空飞行中所获得的空—地多光谱同步数据,经回归分析得到不同地区、不同时期、不同高度和不同探测角度条件下的各波段地一空遥感数据回归方程,共59个。经相关系数r和t检验表明相关性显著或十分显著。相关系数绝大部分大于0.98,最小也不小于0.93。并就不同因素对回归系数的影响及反射亮度影像和波段反射率影像生成等有关内容进行了探讨。
According to the theory analysis, mathematical mode showing the lineal relationship between the response of airborne scanner and the effective reflected brightness of targets has been established under the reasonable assumption, exact physical significance for related parameters is given.The measuring method of absolute parameters i.e. solar reflected radiance distribution function on the ground, has been solved under the condition of the field measurement, and it makes the sychronous measurement become practible.Based on the airborne and field data obtained in Gold-Sea Lake, Gaoyaing and Anxing counties, 59 regressive equations were obtained by regressive analysis at different area, temporal, height and detective angles.t test and r test show that the correlations are obvious or quite obvious. The correlative coefficient are almost larger than 0.98, the remainder are not smaller tthan 0.93, various factors influence on the regressive coefficient, the formation of the reflected brightness image and band reflectance image have been researched.
出处
《环境遥感》
CSCD
1992年第3期226-235,T001,共11页
