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一、引言应用遥感技术对森林生态系统进行探测研究,首先要在遥感图象中进行地物识别和分类。目前,不论是目视还是通过一定仪器来量测或识别遥感图象中的物体,都是根据目标物体对电磁波的各种响应特性进行的,亦即是物体对电磁波辐射波谱特性、空间特性、辐射的偏振特性及时间特性来感知和认识。所以,研究物体的辐射光谱特性既能为林业最佳遥感仪器和最佳传感器波段的选择提供依据,又能为遥感数据判读分析打下基础,而且解译理论
I. INTRODUCTION The application of remote sensing technology to forest ecosystem research and exploration must first carry out object recognition and classification in remote sensing images. At present, measuring or identifying objects in remote sensing images, whether visual or through certain instruments, is based on various response characteristics of the target object to the electromagnetic wave, that is, the object has characteristics of spectral characteristics of the electromagnetic radiation, spatial characteristics, Polarization characteristics of radiation and time characteristics to perceive and recognize. Therefore, the study of the radiation characteristics of objects not only provide the basis for the selection of the best forestry remote sensing instrument and the best sensor band, but also lay a foundation for the interpretation analysis of remote sensing data, and the interpretation theory