Product Manual

7
RADAR PERFORMANCE
RADAR PERFORMANCE
Signal to Noise (Detection Range)
A series of radar techniques have been used in the 317 to maximise the signal to noise ratio for a given target.
The range performance of the 317 is tested at manufacture by simulation over the range 6 to 70m.
Range Measurement
The range resolution is largely a function of the bandwidth. The range is reported in units of metres. The range
of a target is reported to the nearest 0.1m. The range accuracy of any particular measurement is dependent on
the signal to noise ratio of the received signals. These can vary by a large amount.
Speed Measurement
The speed measurement is fully instrumented over the range 12 to 300km/hr in both directions. The speed
measurement is reported to the nearest 0.1km/hr and is corrected for the 22° mounting angle as its default
setting. The angle can be adjusted with the appropriate command. The speed is reported in Km/hr and there is
an option to convert the speed reading to mph with the appropriate command.
Frame Rate
The frame rate of the radar is the rate at which the radar takes speed and range measurements, it is fixed
at 48 frames/sec.
Typical Radar Output
The following image shows the typical output from the 317 displaying the ‘Target detect’ and ‘Heart-beat’
messages.