Cartographers rely on the authority of maps to communicate locations, guide navigation at sea, and shape people’s perceptions ...

General Atomics AeroTec Systems has added a new sensor option to its Do228 NXT aircraft, widening its role in search rescue, maritime patrol, disaster response and law enforcement missions. The new ...

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Abstract: In the coordinate registration of skywave over-the-horizon radar (OTHR), errors arising from ionosphere modeling and parameter estimation are the main sources. We propose reducing these ...

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Carpet installation cost explained. See average price per sq ft, labor charges, material costs, and tips to get the best deal ...