Product Manual

6
RADAR CHARACTERISTICS
FREQUENCY MODULATION
The radar is an FMCW radar where the Frequency Modulation (FM) characteristics give the radar a transmit
bandwidth of 44MHz. The FM is such that it is symmetric about the centre frequency of the band it is operating in.
The change in transmit bandwidth with temperature is measured to be typically 30KHz/˚C. The stability of the
bandwidth over time is anticipated being better than 3% in the first year and lower for each subsequent year.
Bandwidth control over temperature
The bandwidth control over temperature (44MHz at 24.125GHz) has been specifically designed to minimise any
range error over the working temperature range.
This performance ensures correct range to target measurement of the radar under the operating conditions.
The following graph illustrates the performance of a typical unit over the temperature range of -30 to +60
degrees.
% RANGE ERROR OVER TEMPERATURE
10
5
-20 0 20 40 60 80
-5
-10
Ambient Temperature (ºC)
Range Error (%)