Results 1 - 7 of 7 results out of about 446 pages. (0.16 seconds)

FirstTime . . . 6 matches
...ally adjusted, its location will be much more accurate than you can measure with your [[GPS]] receiver. If the mark is horizontally scaled, its location will be off by as much as ...

5.9k - rev: 7 (current) last modified: 2009-03-21 21:03:18

Glossary . . . 2 matches
...DOT]], [[drilled hole]], [[DSFILES]], [[DSWIN]] ---- . <<Anchor(E)>> . E<<BR>> [[EasyGPS]], [[eccentric]], [[elevation]], [[Ellipsoid|ellipsoid]] ---- . <<Anchor(F)>> . F<<B...

3.0k - rev: 25 (current) last modified: 2009-03-21 21:03:19

triangulation . . . 1 match
... then the lengths of the other two sides can be computed. Prior to the advent of the [[GPS|Global Positioning System]], triangulation was the only practical way of surveying over...

0.9k - rev: 3 (current) last modified: 2009-03-21 21:03:19

elevation . . . 1 match
... to a [[vertical datum]]. Elevation can be measured by [[differential leveling]], by [[GPS]] measurements, or by [[triangulation]] if the point measured is inaccessible, such as ...

0.3k - rev: 3 (current) last modified: 2009-03-21 21:03:18

datum . . . 1 match
...has improved, and better measurements have allowed datums to be refined. The NAVSTAR [[GPS|Global Positioning System]] that was developed by the US Military in the 1980's and 90'...

1.9k - rev: 9 (current) last modified: 2009-03-21 21:03:18

beacon . . . 1 match
...sm.addr.com/ndb-nav-adf-1.htm|ADF / NDB Radios]], [[VORTAC]] stations, and eventually [[GPS]]! Obviously, Airway Beacon sites had to be accurately located, and so their locations...

4.1k - rev: 11 (current) last modified: 2009-03-21 21:03:18

VORTAC . . . 1 match
...At some future time, they might all be obsolete, being replaced by much more accurate [[GPS]] navigation, but that could be many years away. Below is a typical VOR (or VORTAC) st...

2.0k - rev: 14 (current) last modified: 2009-03-21 21:03:19