新疆棉花遥感识别最佳时相的选择

Selection of the Optimum Temporal for Cotton Remote Sensing Identification in Xinjiang

棉花遥感识别最佳时相的选择是棉花遥感监测系统快速有效建立和正常运行的关键性、基础性环节之一,它必须兼顾作物遥感识别和监测系统中各模型对遥感时相选择的要求,综合考虑多方面的影响因素。从新疆三大棉区棉花和其它主要农作物的光谱差异和物候历的差异,同时参考太阳高度和土壤光谱噪声的变化以及棉花面积的代表性等方面,初步确定新疆三大棉区的棉花遥感识别最佳时相期,同时提出了最佳时相选择时还有待试验和解决的问题,以供进一步研究参考。

The selection of the optimum temporal for identification of cotton by using remote sensing is one of the key and basic links of cotton remote monitoring system to quickly and efficiently build normal operation.It must take into account of requirements of models which are connected with crop identification and monitoring of remote sensing systems,and must consider various influencing factors.In this study,according to spectral differences and phenological calendar differences,and reference the changes of solar altitude and spectral noise from soil in the cotton area,as well as the representation of cotton areas of the three major cotton growing areas in Xinjiang cotton and other major crops,the best period of cotton remote sensing identification in the three major cotton growing areas in Xinjiang was initially determined.