AOR AR5001D User's Guide download pdf (Page 80)

SignalTrack User's Guide

TRACKING AN RF SOURCE

NETWORK CONTROL SITE

Once SignalTrack is configured, use the mouse to press the Run button . If radio modem

networked sites (fixed or mobile) are on the network, the SignalTrack at the Network Control Site

will begin sending poll messages to them. When each site receives a poll it registers itself with

SignalTrack. Once registered SignalTrack begins collecting data from these sites.

If fixed sites use telephone modems, pressing the Run button causes the originating modems to call

each of the sites. If for some reason the site cannot connect with the modem, then an error

message will be displayed.

Fixed sites connected by Ethernet or direct serial stay connected continuously.

The frequency monitored by a network of direction finders will depend on how you've setup

SignalTrack. If you want SignalTrack to control the frequency make sure you've selected None from

the RX Memory->Control Site menu. If you want a receiver at a site to control the network

frequency the select the site name from the same menu.

If you are using SignalTrack to control the frequency, 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 receivers at the DF locations to the

selected channel frequency and begins monitoring the direction finders for bearing data.

If you are using a site receiver to control the frequency, either manually tune the receiver to the

desired frequency or select the memory bank to scan from the RXMemory->Scan drop down

button.

The fixed direction finder sites will be displayed as colored squares on the map (see Figure below). If

a RF source is present at the channel frequency, lines of bearing will be displayed emanating from the

site location. If more than one site is receiving data, the SignalTrack will provide a real time estimate

of the source location and an average estimate of the source location. The estimates are displayed as

small circles. 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. The average estimate is displayed in a different user selectable color. 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. The Figure below demonstrates a typical display of the target location.

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AOR AR5001D User's Guide Page 80