Central South Dakota Airborne Lidar Validation - Field Survey Data

U.S. Geological Survey (USGS) scientists conducted field data collection efforts during the time periods of April 25 - 26, 2017, October 24 - 28, 2017, and July 25 - 26, 2018, using a combination of surveying technologies to map and validate topography, structures, and other features at five sites in central South Dakota. The five sites included the Chamberlain Explorers Athletic Complex and the Chamberlain High School in Chamberlain, SD, Hanson Lake State Public Shooting Area near Corsica, SD, the State Capital Grounds in Pierre, SD, and Platte Creek State Recreation Area near Platte, SD. The work was initiated as an effort to evaluate airborne Geiger-Mode and Single Photon light detection and ranging (lidar) data that were collected over parts of central South Dakota. Both Single Photon and Geiger-Mode lidar offer the promise of being able to map areas at high altitudes, thus requiring less time than traditional airborne lidar collections, while acquiring higher point densities. Real Time Kinematic Global Navigational Satellite System (RTK-GNSS), total station, and ground-based lidar (GBL) data were collected to evaluate data collected by the Geiger-Mode and Single Photon systems.

美国地质调查局（U.S. Geological Survey, USGS）的科研人员分别于2017年4月25日至26日、2017年10月24日至28日以及2018年7月25日至26日开展野外数据采集工作，综合运用多种测绘技术，对南达科他州中部5处场地的地形、构造及其他地貌特征进行测绘与验证。这5处场地分别为南达科他州尚佩恩的尚佩恩探险者体育综合体和尚佩恩高中、南达科他州科西卡附近的汉森湖州立公共射击区、南达科他州皮尔的州议会大厦场地，以及南达科他州普莱特附近的普莱克里湖州立休闲区。本次工作旨在评估在南达科他州中部部分区域采集的机载盖革模式与单光子激光雷达（light detection and ranging, lidar）数据。相较于传统机载激光雷达采集作业，单光子与盖革模式激光雷达均可实现高空区域测绘，不仅作业耗时更短，还能获取更高的点云密度。本次采集了实时动态全球导航卫星系统（Real Time Kinematic Global Navigational Satellite System, RTK-GNSS）、全站仪（total station）以及地基激光雷达（ground-based lidar, GBL）数据，用于对盖革模式与单光子激光雷达系统采集的数据进行验证评估。