AOR AR5001D Guida Utente Scaricare il pdf (Pagina 83)

Using SignalTrack

When using SignalTrack in a mobile installation, the current location will be shown as a triangle with

the point of the triangle oriented in the direction the mobile is heading. To track a signal press the

Run button

. After pressing the Run button, set the frequency by selecting the channel you wish

to monitor from the Channel menu, using the frequency display in the tool bar, or using the Receiver

Control dialog. Selecting the frequency sets the receiver to the selected channel frequency and

begins monitoring the direction finder for bearing data. If a RF source is present on the channel

frequency, a line of bearing will be displayed emanating from the site location. A site location and

bearing can be saved on the screen by pressing the Insert key. After a measurement is saved to the

screen, the line of bearing will be used to estimate the position of the signal using all saved locations

as well as the currently active location. Any saved location can be deleted by selecting it with the

mouse and pressing the Delete key. All saved sites can be deleted by pressing Shift + Delete.

Typically SignalTrack is configured in the Options dialog to display the most current estimate as well

as older estimates. The older estimates gradually fade away as new estimates become available.

Additionally, an uncertainty ellipse will be drawn. The uncertainty ellipse is calculated using the

uncertainty in the direction finder measurements. Under ideal conditions, the RF source has a 95%

probability of being within that ellipse.

When the mobile is operated as a slave, the Network Control Site will supply bearing data from the

fixed sites it is controlling. The sites will appear as black squares at the fixed site locations and the

measured bearings will be shown. These bearings are also used to update the estimated position.

The Network Control Site sends all bearings received over the interval since the last time it polled

the mobile site and SignalTrack in the mobile bleeds in this data over a 400 ms time period and then

it holds the last bearing received.

The figure below shows a display with a number of saved bearings and a fixed site.

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 119 120

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AOR AR5001D Guida Utente Pagina 83