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7.5 Localizing a signal source (Outdoor)
Narda IDA - 3106
141
Step 2: Saving bearings in a localization
1.
Tune the receive frequency Fcent and channel bandwidth CBW to the
bearing signal.
NOTE:
You can take bearings on several frequencies one after the other and save
them in a localization. Multiple frequency bearings are much easier to do if
you use a transmitter table.
2.
Determine the direction of the signal source by direction finding and save
the result by pressing the
SAVE
key.
3.
Determine the direction from different locations, saving the results each
time with the
SAVE
key.
Step 3: Display the localization and calculate the
transmitter location
1.
Press the
Map
softkey to switch to the Map menu.

The bearings are displayed.
2.
Press the
Average Position
softkey to calculate the transmitter location
and display it.

The location is determined automatically from the existing bearings
and indicated on the map. The location coordinates are shown in the
header line. Repeat the direction determination as given in Step 2 if
necessary until the position of the transmitter is shown accurately
enough.
3.
To complete the localization, press the
Localization
softkey followed by
the
OK
key.
A warning message is shown if you press
OK
before you complete the
localization.
NOTE:
You can find the description of the Map menu under
The Map menu
on page 143.
Transferring results from other instruments
Measurements can be made simultaneously from different locations with
several instruments and the results transferred instead of using only one
instrument and changing your location. The bearing results from the other
instruments can then be entered into one instrument. You can find
information about this under
Exchanging bearings between instruments
on page 142.