Remote sensing

Photogrammetry: Which is better, grid flight or ROI?

Photogrammetry: Which is better, grid flight or ROI?

“At our most recent sUAS mission we utilized the Mission Planner ROI (Region of Interest) feature to capture aerial images of the subject. The ROI datum allows the user to create a fixed centroid position to orient the camera and figure an equal distance from a point for the flight path. Our goal was to solve some of the distortion ...

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Light Detection and Ranging (LiDAR) Returns

Light Detection and Ranging (LiDAR) Returns

This animation demonstrates how a discrete return LIDAR system records information as light travels through an object, like a tree. The NEON project will collected and offer free discrete return and full waveform LiDAR data for 30 years across it’s field sites. It will also offer derived data products like canopy height models and elevation data.

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PHOTOGRAMMETRY: Eyes in the Sky

PHOTOGRAMMETRY: Eyes in the Sky

When Hurricane Irene hit North Carolina, the Photogrammetry Unit of the N.C. Department of Transportation knew it would be called into action. When the storm passed, the Photogrammetry Unit took to the skies from Raleigh-Durham International Airport in a Beechcraft C-90 aircraft mounted with a high-resolution digital camera. The group has flown missions at about 7,500 feet from Ocracoke to ...

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Remote Sensing of Environmental Conditions

Remote Sensing of Environmental Conditions

Accurately measuring environmental conditions is critical for natural resource planning, estimation of agricultural conditions, weather forecasting and a number of essential scenarios affecting our everyday life. Emerging Science joins Christian Skalka, assistant professor of computer science at the University of Vermont, as he explains how scientific advances in gathering and transmitting environmental data are giving us a better understanding of ...

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LiDAR – Introduction to Light Detection and Ranging

LiDAR – Introduction to Light Detection and Ranging

This video presents LiDAR of light detection and ranging, an active remote sensing system that uses laser energy, to measure the heights of objects like trees and buildings and even the ground. This video was developed by the National Ecological Observatory Network

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Aerial Photogrammetry with Hexakopter

Aerial Photogrammetry with Hexakopter

In short, we placed Ground Control Points (GCPs) around a man-made ponding area at roughly ten meter intervals (40 x 30 m in total area). The GCPs were shot in with a deferentially-corrected GPS (0.1 m horizontal and 0.2m vertical resolution) and with a Total Data Station (0.03m vertical and horizontal resolution). We then flew the Hexakopter at 40m above ...

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Introduction to Ocean Remote Sensing

Introduction to Ocean Remote Sensing

Fully updated, with significant new coverage of advances in satellite oceanography and results from new satellite missions, the second edition of this popular textbook introduces students to how remote sensing works, how to understand observations from Earth-observing systems, and the observations’ importance to physical and biological oceanography. It provides full explanations of radiative transfer, ocean surface properties, satellite orbits, instruments ...

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