expoweb/handbook/survey/l/orthoheight.html

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<title>Orthographic Height - Geoid and Ellipsoid</title>
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<H1>Orthographic Height - Geoid and Ellipsoid</H1>
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<p>How the Ellipsoid height (which is what GPS reports) relates to the geoid height (definition of sea level) and the orthographic height (altitude above mean sea level). Though many GPS devices say they report height above sea level, they are probably lying.


  From <a href="https://support.virtual-surveyor.com/support/solutions/articles/1000261349-the-difference-between-ellipsoidal-geoid-and-orthometric-elevations-">support.virtual-surveyor.com/support/solutions/articles/1000261349-the-difference-between-ellipsoidal-geoid-and-orthometric-elevations-</a></p>

<p>See also:<br>

  <a href="/stations">Troggle report: UTM/G&amp;K entrance data</a><br>
  <a href="/entrances">Troggle report: entrances</a><br><br />
  <a href="handbook/survey/coord2.html">GPS and coordinate systems</a><br>
<a href="coord.htm">Basic Coordinate Systems</a>.<br>

  <a href="handbook/survey/lasers.htm">Geographical fixed points on Loser</a><br>
  <a href="/katast.htm">The Austrian Kataster areas</a><br /><br />
  
<p class="caption">Downloaded 2023-11-28</p>


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text ch - online edit of handbook/survey/l/orthoheight.html 2023-11-28 19:04:15 +00:00			`<title>Orthographic Height - Geoid and Ellipsoid</title>`
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			`<body>`
			`<H1>Orthographic Height - Geoid and Ellipsoid</H1>`
			`<div class="centre"><img alt="" src="/handbook/survey/i/orthoheight.jpg" />`
			`</div>`

text ch - online edit of handbook/survey/l/orthoheight.html 2023-11-28 19:04:15 +00:00			`<p>How the Ellipsoid height (which is what GPS reports) relates to the geoid height (definition of sea level) and the orthographic height (altitude above mean sea level). Though many GPS devices say they report height above sea level, they are probably lying.`
init - online adding of an image 2023-11-28 19:02:44 +00:00

edit - online edit of handbook/survey/l/orthoheight.html 2023-11-28 19:05:50 +00:00			`From <a href="https://support.virtual-surveyor.com/support/solutions/articles/1000261349-the-difference-between-ellipsoidal-geoid-and-orthometric-elevations-">support.virtual-surveyor.com/support/solutions/articles/1000261349-the-difference-between-ellipsoidal-geoid-and-orthometric-elevations-</a></p>`
init - online adding of an image 2023-11-28 19:02:44 +00:00
update - online edit of handbook/survey/l/orthoheight.html 2024-07-20 11:43:15 +01:00			`<p>See also:<br>`
edit - online edit of handbook/survey/l/orthoheight.html 2023-11-28 19:05:50 +00:00
update - online edit of handbook/survey/l/orthoheight.html 2024-07-20 11:43:15 +01:00			`<a href="/stations">Troggle report: UTM/G&K entrance data</a><br>`
			`<a href="/entrances">Troggle report: entrances</a><br><br />`
urls - online edit of handbook/survey/l/orthoheight.html 2024-07-20 11:44:26 +01:00			`<a href="handbook/survey/coord2.html">GPS and coordinate systems</a><br>`
update - online edit of handbook/survey/l/orthoheight.html 2024-07-20 11:43:15 +01:00			`<a href="coord.htm">Basic Coordinate Systems</a>.<br>`

urls - online edit of handbook/survey/l/orthoheight.html 2024-07-20 11:44:26 +01:00			`<a href="handbook/survey/lasers.htm">Geographical fixed points on Loser</a><br>`
update - online edit of handbook/survey/l/orthoheight.html 2024-07-20 11:43:15 +01:00			`<a href="/katast.htm">The Austrian Kataster areas</a><br /><br />`

edit - online edit of handbook/survey/l/orthoheight.html 2023-11-28 19:05:50 +00:00			`<p class="caption">Downloaded 2023-11-28</p>`
init - online adding of an image 2023-11-28 19:02:44 +00:00

text ch - online edit of handbook/survey/l/orthoheight.html 2023-11-28 19:04:15 +00:00			`<hr /></body>`
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