What is an ellipsoid? You need it with GPS surveying. Also when you do that with Apglos Survey Wizard: [ Ссылка ]

An ellipsoid is a model of the earth. The earth is not a perfect sphere. The distance from the north pole to the south pole is smaller than the distance from one point of the equator to the opposite point of the equator.

That is why there is an ellipsoid. And that is why we tell in this video what is an ellipsoid. With GPS surveying you need an ellipsoid to convert latitude and longitude to an X and Y coordinate or to a northing and easting.

An ellipsoid consists of two values. These are the ellipsoidal semi major axis and the ellipsoidal semi minor axis.

But most of the time in a projection the ellipsoidal semi major axis is given but not the ellipsoidal semi minor axis. In stead of that last value the inverse flattening is given.

But you can calculate the ellipsoidal semi minor axis with this inverse flattening. In this video I show you how.

Luckily Apglos Survey Wizard does all the calculations, so you can just focus on happy land surveying.

So we expect that after seeing this video you don't have to ask yourself anymore what is an ellipsoid.

You can download Apglos Survey Wizard from the Google Play Store:
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To connect a GNSS receiver to land survey app Apglos Survey Wizard we use the free app Apglos Config Wizard. You can download this free app from the Google Play Store:
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Apglos created this video. Apglos is a software development company. And we developed the easiest land survey app. It is Apglos Survey Wizard.

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