Keyword Analysis & Research: nad83 10n

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What does NAD83 stand for?

The North American Datum of 1983 (NAD 83) is a unified horizontal or geometric datum and successor to NAD27 providing a spatial reference for Canada and the United States. NAD83 corrects some of the distortions from NAD27 over distance by using a more dense set of positions from terrestrial and Doppler satellite data.

What is nadnad 27 and NAD 83?

NAD 27 and NAD 83 provide a frame of reference for latitude and longitude locations on Earth. Surveyors now rely almost exclusively on the Global Positioning System (GPS) to identify locations on the Earth and incorporate them into existing geodetic datums. For example, NAD27, NAD83, and WGS84 are the most common geodetic datums in North America.

Is NAD83 geocentric?

However, NAD83 is not geocentric with an offset of about two meters. North American Datum of 1983 is based on the reference ellipsoid GRS80 which is physically larger than NAD27’s Clarke ellipsoid. The GRS80 reference ellipsoid has a semi-major axis of 6,378,137.0 meters and a semi-minor axis of 6,356,752.3 meters.

Can I change the default UTM zone for NAD83?

You may change the default UTM zone. The change is processed interactively once a lat-long is converted; DO NOT click the Submit button. Mapping of NAD83 realizations to HARN and FBN


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