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排除影响地物热辐射方向性三因子以外的噪声，即消除热红外传感器随着测 量角度的变化所接收到的组分变化所引起的噪声；消除前后测量的时间差里地表热量 平衡变化所引起的噪声，这是多角度遥感测量中的难题，长期以来一直没有得到解决． 提出利用“热像仪－定面积法”和“双传感器－同步法”进行测定．试验结果表明，以前 的几种方法所观测到的数据离散、无规律，而利用本方法获取的数据，呈现出相当有规 律的方向性分布．从而揭示了影响地物目标热辐射方向性的主要因子和它们各自的影 响程度．
Excluding the three factors affecting the thermal radiation direction of the noise, that is, to eliminate the thermal infrared sensor with the measurement of the angle of the received component changes caused by the noise; eliminate the time difference between before and after the measurement of surface heat balance caused by changes in Noise, which is a difficult problem in multi-angle remote sensing, has not been solved for a long time. Proposed the use of “camera - area method” and “dual sensor - synchronization method” for determination. The experimental results show that the data observed by several previous methods are discrete and irregular, while the data obtained by this method show quite regular directional distribution. Which reveals the main factors affecting the direction of the target thermal radiation and their respective degree of influence.