Photovoltaic (PV) power generation facilities have been built on various scales due to rapid growth in response to demand for renewable energy. Facilities built on diverse terrain and on such a scale are required to employ fast and accurate monitoring technology for stable electrical production and maintenance. The purpose of this study was to develop a technology to analyze the normal operation and failure of solar modules by acquiring images by attaching optical and thermal infrared sensors to unmanned aerial vehicles (UAVs) and producing orthographic images of temperature information. The results obtained in this study are as follows: (1) a method of using optical and thermal infrared sensors with different resolutions at the same time is able to produce accurate spatial information, (2) it is possible to produce orthographic images of thermal infrared images, (3) the analysis of the temperature fluctuation characteristics of the solar panel and cell showed that the abnormal module and cell displayed a larger temperature change than the normal module and cell, and (4) the abnormal heat generation of the panel and cell can be accurately discerned by the abnormal state panel and cell through the spatial distribution of the temperature. It is concluded that the inspection method of the solar module using the obtained UAV-based thermal infrared sensor can be useful for safety inspection and monitoring of the rapidly growing solar power generation facility.Since the mid-1970s, the Republic of Korea has started to apply solar power to homes. In the early days, solar panels were mostly used for hot water. In 2000, solar PV applications diversified, extending to household, industrial, agricultural, lake, and reservoir applications. Republic of Korea has been mainly used to utilize mountainous areas, which occupy 63% of the entire country. Many solar power plants are generally operated by using large flat terrain, but many facilities have been applied to sloped terrain conditions. In recent years, the number of PV power generation facilities installed on the water, i.e., reservoirs and lakes, has increased. Facilities located on such terrain and water incur heavy cost and require a lot of manpower to check periodic monitoring and problematic solar panels, and there is a high risk of safety problems. In order to operate the solar power plant efficiently, it is necessary to have not only a solar panel but also equipment for monitoring and maintaining the solar power plant [4].PV power plants are affected by various factors that can damage or reduce their efficiency. Selecting an optimal location for a power plant, one that maximizes power generation efficiency, is important in reducing power-generation and maintenance costs [5]. Once installed, the first time damage occurs to any part, the cell will overload and cause abnormal heat generation. After that, the entire module is short-circuited, and the overall output is lowered. Defects and losses that can occur in solar panels are caused by various factors. Decrease of po...

The main goal of this paper is to assess application of UAV (Unmanned Aerial Vehicle) remote sensing and GIS based images in detection and measuring of rice field drought area in South Korea. Drought is recurring feature of the climatic events, which often hit South Korea, bringing significant water shortages, local economic losses and adverse social consequences. This paper describes the assesment of the near-realtime drought damage monitoring and reporting system for the agricultural drought region. The system is being developed using drought-related vegetation characteristics, which are derived from UAV remote sensing data. The study area is 3.07 km 2 of Wonbuk-myeon, Taean