尺度问题作为对地观测的主要挑战和遥感科学的核心问题, 一直以来备受关注.国内外学者对这一问题进行了大量的基础理论研究和科学验证工作, 探讨和解决了许多与遥感尺度相关的核心问题.当然, 在遥感探测内容中, 发射率和温度遥感中也存在明显的尺度问题.以往混合像元发射率尺度问题的研究往往集中于地球表面, 幸运的是, 月球为我们研究这一问题提供了绝佳的对象.同时, 伴随着Diviner热辐射探测器月表测量数据的不断更新, 混合像元中发射率尺度问题的具体研究及其定量描述逐渐变为可能.本文以月表Diviner热红外测量数据为基础, 在充分研究和分析Diviner数据特征和发射率计算方法的前提下, 以不同尺度下的Apollo 15登月区或者登月点热红外发射率为研究对象, 依据混合像元发射率定义, 分析和研究了混合像元中发射率的尺度转换和尺度效应两个问题, 从发射率数值角度出发讨论和验证了尺度变换和尺度效应的一般规律, 并给出定量描述, 希望能够为尺度变换和尺度效应等问题的研究提供理论支持和实验依据.

The scale problem is the main challenge of Earth observation, and it is also the core issue that has been receiving attention in remote sensing science. A lot of basic theoretical research and scientific verification work have been done on this, and many core issues related to remote sensing standards have been discussed and solved. In remote sensing content, scaling issues including emissivity and temperature measurements are more reliable and less affected by the Earth’s atmosphere. At the same time, with the continuous update of the Diviner thermal radiation detector's monthly surface measurement data, the specific research and quantitative description of emissivity scaling problems in mixed pixels has gradually become possible. Based on Diviner's thermal infrared measurement data on the moon's surface, the thermal infrared emissivity of the moon landing area or moon landing point of Apollo 15 at different scales was studied under the premise of full study and analysis of Diviner data characteristics and emissivity calculation methods. Based on the definition of mixed-cell emissivity, two problems of emissivity scaling and scale effect in mixed pixels are analyzed and studied. From the emissivity numerical point of view, the general rules of scaling and scaling effects are discussed and verified. The given quantitative descriptions are hoped to provide theoretical support and experimental evidence for research on issues such as scale transformation and scale effects.