Ground Control Monuments for 2016 King County/Puget Sound Lidar Consortium Lidar Project

For more information about this layer please see the GIS Data Catalog. All ground control monuments utilized for the PSLC King County Lidar dataset. Ground control monuments are used to provide redundant control within 13 nautical miles of mission areas for Lidar flights, as well as the collection of ground control points using real-time kinematic (RTK) and post-precessed kinematic (PPK) survey techniques. Data was processed in reference to NAD83 (CORS96), however the horizontal datum for this dataset is defined as NAD83 (HARN) as the difference is generally small and allows for greater ease of use with data in different datums. The vertical datum is NAVD88, Geoid 03, and the data is projected in Washington State Plane North. Units are in US Survey Feet. Quantum Spatial collected the PSLC King County LiDAR data for the Puget Sound LiDAR Consortium between 02/24/16 and 05/25/17.如需了解该图层的详细信息，请参阅地理信息系统（GIS）数据目录。本数据集为普吉特湾激光雷达联合会（PSLC）金县激光雷达（Lidar）数据集所用的全部地面控制基准标石。此类基准标石用于在激光雷达飞行作业区域13海里范围内提供冗余基准控制，同时采用实时动态（RTK）和后处理动态（PPK）测量技术采集地面控制点。本数据集的数据处理参考了NAD83 (CORS96) 基准，但水平大地基准定义为NAD83 (HARN)，二者差值通常极小，便于与不同基准下的数据集协同使用。垂直大地基准为NAVD88（Geoid 03），数据采用华盛顿州平面北坐标系投影，单位为美国测量英尺（US Survey Feet）。量子空间公司（Quantum Spatial）于2016年2月24日至2017年5月25日期间，为普吉特湾激光雷达联合会（PSLC）采集了该金县激光雷达数据集。