User manual

Code: ENIGMA III User Manual
Edition: 1 Revision: 4
Date: 19/12/2008
Page: 96/97
8. Start the Frog/Muran system on the radar computer by calling “/etc/init.d/muran
start”
10.3 Antenna alignment
As part of the installation of a radar system, the antenna has to be leveled and aligned to true north.
Usually this is done mechanically. The ENIGMA III signalprocessor has the ability to correct the azimuth
and elevation TAGS. The parameter AzimuthAbsoluteOffset and ElevationAbsoluteOffset are used for
this. The configured angles will be added to the TAGS before any processing. Commands sent to the
RCC also need to be corrected. The Frog/MURAN software can either handle the offsets by software or
send the appropriate commands to the RCC.
AzimuthAbsoluteOffset: calibration offset for antenna alignment
ElevationAbsoluteOffset: calibration offset for antenna alignment
Some systems work with separate synchro encoders to provide the TAGS. These can be calibrated with
the following two parameters.
AzimuthSynchroOffset: calibration offset for encoder/synchro difference
ElevationSynchroOffset: calibration offset for encoder/synchro difference
10.4 Setting prf limits
1. In signal processor Enigma PRF limits are set by following:
2. Open a console in a Frog host
3. type “telnet enigma3 5555”
4. type “auth Secondary”
5. type “set PrfLimits lowprf0 lowprf1 lowprf2 lowprf3 highprf0 highprf1
highprf2 highprf3” where lowprf and highprf are the minimum and maximum prf values.
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