Verifying High Points

The Google Earth photograph displays high points on the link path as “Hp1”, “Hp2” and so on. These are points at which the link path is very close to the ground and so prone to obstruction. It is therefore vital to obtain the most accurate possible survey data at these high points. The planner needs to answer the following questions:

• Does the path profile (from the Path Profiler) show the correct ground height near the high points?

• Are there any obstructions near the high points?

To obtain approximate answers, use a map and Google Earth(TM): an example is described in Verifying a High Point Using a Map.

To obtain more reliable answers, visit and survey the high point: an example is described in Verifying a High Point Using a Survey.