UAV imagery over K-sector of the Greenland Ice Sheet on 8 August 2014

Digital imagery acquired by a Sony NEX-5N digital camera vertically mounted inside a fixed-wing UAV. The UAV surveyed a 25 km east-west transect dissecting the dark zone of the K-sector of the Greenland Ice Sheet on 8 August 2014. The camera has a 16 mm fixed focus lens (53.1 by 73.7° field of view) yielding an image footprint of approximately 525 x 350 m during the autonomous sortie. The camera was preset with a fixed shutter speed of 1/1000 s, ISO 100 and F-stop of 8. The images have a pixel footprint of approximately 11 cm. A corresponding csv file provides the UAV geolocation and attitude data for each image. The data were logged by an Arduino navigation and flight computer in real-time by a 10 Hz data stream comprising of a GPS, magnetometer, barometer and accelerometer.

本数据集包含由垂直朝下安装于固定翼无人机（Unmanned Aerial Vehicle, UAV）舱内的索尼NEX-5N数码相机采集的数字影像。该无人机于2014年8月8日，沿横跨格陵兰冰盖K区段暗区的东西向25千米样带开展测绘作业。该相机搭载16mm定焦镜头（视场角为53.1°×73.7°），在自主飞行任务中，单幅影像的地面覆盖范围约为525×350米。相机预设固定拍摄参数：快门速度1/1000秒、ISO感光度100、光圈F8。单像素对应的地面分辨率约为11厘米。配套的CSV格式文件包含每幅影像对应的无人机地理位置与姿态数据。上述导航与飞行数据由集成GPS、磁强计、气压计与加速度计的Arduino导航飞行计算机以10Hz的数据流实时记录。