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一、前言 土壤遥感最佳工作波段的正确选择,有助于提高遥感技术的探测和解译水平。其选择的原则应该是各类地物之间的分异性最大,而同类地物不同个体间离散性最小。选择这样的波段作为土壤遥感的最佳工作波段,则获得的遥感资料,所包含的地物信息最丰富,信息之间的重叠干扰又最少。它可以根据实验室或野外地物目标波谱特性的测量数据选定,也可以直接通过多光谱遥感试验的方法来确定。 根据室内外地物波谱特性的测试数据选定最佳工作波段,通常有二种方法: 1、目视比较法 把目标物与背景物的波谱反射曲线进行直观比较,选择差异最大的波段,作为最佳波段。由于地面物体的波谱特性测定数据受到各种因素的影响(如观测角、照度、阴影、方向等)而略有变动,测得的曲
I. INTRODUCTION The correct choice of the best working band for soil remote sensing helps to improve the level of detection and interpretation of remote sensing technologies. The principle of selection should be the greatest difference between the various types of features, while the discrete nature of the same type of different entities the smallest. When such a band is selected as the best working band for soil remote sensing, the obtained remote sensing data contains the most abundant feature information and the least overlap interference between the information. It can be selected based on the measured data of the target spectral characteristics of laboratory or field objects or directly by the method of multi-spectral remote sensing. According to the indoor and outdoor spectral characteristics of the test data to select the best working band, there are usually two ways: 1, visual comparison method of the object and the background spectral reflectance curve intuitive comparison, select the most different band, as the most Good band. Since the spectral characteristics of the ground object measured by a variety of factors (such as observation angle, illumination, shadow, direction, etc.) and a slight change in the measured song