Using CDR Data from a TRACON Facility
This procedure assumes you are able to obtain data CDR data from an TRACON
facility into the computer. How this is done is beyond the scope of this
procedure. Radar ViewPoint supports both the 'TG' Target report and 'TD'
Track Data report formats. As a convention, the following extensions are
used: raw CDR data files used .CDR, Universal Radar Formatted files use
the .URF extension, and Radar ViewPoint database files use the .RAD extension.
These extensions are not required, but they are assumed by various programs
if not specified.
When first starting to use CDR data, you will need to edit the CDR2URF.INI
file. For each TRACON facility you will get CDR data from, radar subsystem
information must be added.. You will need to know the coordinates, sensor
altitude, and magnetic variation for each radar subsystem managed by each
TRACON facility. There is some samples within the CDR2URF.INI file, so
please look at them when you edit the file. Follow these guidelines when
adding a new facility:
- Start by adding the new facilities' three letter ident enclosed in brackets;
- Make up a unique number (between 0 and 999) for the facility and add a line like:
- For each radar subsystem, add a line with the following form:
where 'x' is the subsystem's number.
It is very critical that the coordinates
and magVariation are accurate. The radar data is oriented in reference to
magnetic north and it is vital that you use the value that the radar uses.
The altitude is not very critical unless the /SLANTRANGE option is used,
then this value should be within 100 feet of the actual altitude.
- If you will be using any particular facility more than others, you may
want to specify it as the default facility. Under the [Defaults] section of
the CDR2URF.INI file, change the 'Facility=...' line to 'Facility=xxx' where
xxx is your facility of choice.
Once the CDR data is loaded onto the system with Radar ViewPoint, there are
two basic procedures to perform to prepare the files for use within Radar
ViewPoint. These are: Within DOS or the DOS compatibility box...
- Convert the .CDR file to a .URF file (Universal Radar Format file) by
using the CDR2URF program.
- Convert the URF file to a RAD file by using the MAKERADR program.
A complete conversion of a file named USA56.CDR to USA56.RAD would look like this:
CDR2URF USA56.CDR /FACILITY=LAX
We just produced a USA56.RAD file with all the data within USA56.CDR.
Both CDR2URF and MAKERADAR have command line options available. Execute
each of the programs with the /HELP option to get a summary of the
additional features. Also, the record format layout of the Universal
Radar Format files (.URF) can be obtained by typing:
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