3. Measurement electronics

Now that the architecture of the cooperative target has been defined, and its spectral and temporal characteristics determined, the next question is how to probe the response of this transducer via a radio-frequency link (figure 4 ). Short-range RADAR meets the requirement of characterizing the response of the cooperative target via a wireless link, without the need for an energy source in the vicinity of the sensitive element. The counterpart of the two main sensor architectures – resonators or delay lines – in terms of measurement electronics are variations in the time or spectral domains of measurement. We have already mentioned that these two measurement strategies are dual through the Fourier transform, and only technology and compliance with standards...