雄穗对玉米冠层热辐射方向性的影响分析

摘要

A realistic computer model was used to simulate the tassel effect on the thermal emission direetionaly of corn canopies, which was further validated by ground measurement. It is found that thetassel contributes little ( mostly ＜ 6％ ) on the total directional birghtness temperature. That means tassel can be omitted during modelling or inversion of the surface leaving thermal radiance.%通过三维计算机模型TRGM模拟分析了抽穗期雄穗对玉米冠层热辐射方向性的影响,并利用高架车平台和热像仪进行了地面遥感观测验证.结果表明,雄穗的存在对整体冠层的热辐射方向性特征影响较小,在建模和反演过程中可以忽略.