Notions on continuous radars
Radars - Detection of mobiles in the clutter

In cases where we are only interested in target speed :

• speed control ;

• doppler navigation ;

• detection of the presence of fixed echoes in a medium.

The simplest solution is to emit a continuous wave of a specific frequency, and measure the difference between the frequency of the received wave and the frequency of the emitted wave.

The schematic diagram, shown in figure 34, uses a coherent transmit-receive chain and two separate antennas.

These radars are simple in design, limited to measuring the Doppler effect of the signal. They emit continuous power, which is much lower for the same energy than...