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NGS revises NOAA report on working in the modernized NSRS
By David Zilkoski
The National Geodetic Survey (NGS) has revised an important technical document on the modernized National Spatial Reference System (NSRS). Zilkoski explores a use case on flood mapping, discussing an Elevation Certificate example, Flood Insurance Rate Map and Flood Insurance Study.
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UAVs take flight: Commercial and industrial applications
Commercial applications continue to grow, with unmanned aerial vehicles (UAVs) — known as drones in the vernacular — gathering data and observations for agriculture, mining, utility inspections, natural resources, historical preservation, security, and many more applications.
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Diving into UAV lidar surveys
The worlds of unmanned aerial vehicles (UAVs), lidar and surveying overlap, with UAV-based lidar able to shed light on places that are difficult or dangerous to access by other means.
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A new angle on mapping cliffs on California’s shore
Cliff surveys are traditionally performed with fixed-wing aircraft that collect nadir photos. However, a photogrammetry company accurately triangulated oblique images and mapped them in 3D stereo, developing a new technique in the process.
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