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7 Direction Finding Mode
150
IDA - 3106 Narda
7.7.8 Determining the transmitter location
(Average Position)
Direction Finding • Map
The
Average Position
function is used to find the location of a transmitter
by triangulation based on the bearings taken. You can find more information
about this method under
Localizing a signal source (Outdoor)
on page 139.
To find the location:

Bearings are available in an open localization or a saved localization has
been recalled.
1.
Press the
Map
softkey.

The bearings are displayed.
2.
Press the
Average Position
softkey.

A red cross marks the calculated position. A red circle around the
cross indicates the possible location area taking the measurement
uncertainties into account (see
Measurement uncertainty
(Bearing Uncertainty)
on page 153).
Figure 29: Bearings from three locations showing the calculated position.
NOTE:
You can use the
All Transmitters
softkey to display all transmitter locations
for all frequencies simultaneously as different colored circles. Measurement
locations and bearings are not then displayed.
Details (e.g. geo-coordinates) are displayed in each case for the transmitter
that you highlight.