Management Summary The Caribbean Island state of Grenada seeks to update its national geospatial data by procuring Lidar elevation models and color/infrared aerial imagery for the entirety of its 380 km2 territory. This document describes the technical specifications for the data capture mission and data deliverables. It outlines the detailed requirements for the expected data quality (accuracy, resolution, completeness, classification etc.), acceptance criteria and reporting standards. The key requirements are: Area of Interest Land mass of the islands of Grenada, Carriacou and Petite Martinique as well as the smaller islands; Total area of 380 km2. Main products: Topographic Lidar data Aerial color (RGB) photography Aerial near infrared (NIR) photography Resolution and accuracy Topographic Lidar: min. 8 points per m2, 10 cm vertical RMSE, 20 cm horizontal RMSE Orthophotos: 20 cm GSD, 3 pixel horizontal RMSE Deliverables Classified point cloud Interpolated topographic digital surface model (DSM) as 0.5 m grid Interpolated topographic digital terrain model (DTM) as 0.5 m grid DTM contours, 0.5 m interval RGB orthophoto mosaic with 0.2 m resolution Color infrared orthophoto mosaic with 0.2 m resolution DTM adjusted and combined with bathymetry data provided by the Contracting Authority Reference systems Delivery system 1: WGS84 datum, ITRF2008 reference frame, UTM Zone 20 North projection, orthometric heights over EGM2008 Delivery system 2: Grenada 1953 datum (Clarke 1880 ellipsoid), British West Indies Grid projection (EPSG 2003), orthometric heights over EGM2008. Precise datum transformation parameters and a detailed geoid model are in the process of being established under a parallel project and will be made available to the Contractor in due time. Measurement unit = meters
Management Summary The Caribbean Island state of Grenada seeks to update its national geospatial data by procuring Lidar elevation models and color/infrared aerial imagery for the entirety of its 380 km2 territory. This document describes the technical specifications for the data capture mission and data deliverables. It outlines the detailed requirements for the expected data quality (accuracy, resolution, completeness, classification etc.), acceptance criteria and reporting standards. The key requirements are: Area of Interest Land mass of the islands of Grenada, Carriacou and Petite Martinique as well as the smaller islands; Total area of 380 km2. Main products: Topographic Lidar data Aerial color (RGB) photography Aerial near infrared (NIR) photography Resolution and accuracy Topographic Lidar: min. 8 points per m2, 10 cm vertical RMSE, 20 cm horizontal RMSE Orthophotos: 20 cm GSD, 3 pixel horizontal RMSE Deliverables Classified point cloud Interpolated topographic digital surface model (DSM) as 0.5 m grid Interpolated topographic digital terrain model (DTM) as 0.5 m grid DTM contours, 0.5 m interval RGB orthophoto mosaic with 0.2 m resolution Color infrared orthophoto mosaic with 0.2 m resolution DTM adjusted and combined with bathymetry data provided by the Contracting Authority Reference systems Delivery system 1: WGS84 datum, ITRF2008 reference frame, UTM Zone 20 North projection, orthometric heights over EGM2008 Delivery system 2: Grenada 1953 datum (Clarke 1880 ellipsoid), British West Indies Grid projection (EPSG 2003), orthometric heights over EGM2008. Precise datum transformation parameters and a detailed geoid model are in the process of being established under a parallel project and will be made available to the Contractor in due time. Measurement unit = meters