Surveyed Positions of Ground Control Points and Photos of In-Place Features Used as Ground Control Points Associated With Images Collected During Unmanned Aerial Systems Flights Over Town Neck Beach, in Sandwich, Massachusetts on January 9, January 25, February 14, March 16, April 28, May 4, and September 18, 2017 (Text Files and Photos)

Low-altitude (80-100 meters above ground level) digital images of Town Neck Beach in Sandwich, Massachusetts were obtained from a camera mounted on a small unmanned...本数据集包含美国马萨诸塞州桑威奇镇汤恩尼克海滩的低空数字图像，拍摄高度为地面以上80至100米，图像由搭载于小型无人设备的相机采集所得。