2. Cooperative target architecture

2.1 Cooperative target: the elastic surface wave transducer

Strategies for differentiating the sensor response from the electromagnetic environment fundamentally condition the design of a passive RF component used as a cooperative target (figure 2 ). Reflective structures around the RADAR will generally have a much larger effective cross-section than that of the sensor: we therefore need to play on the time parameter to decorrelate the sensor response from that of the environment.

The most naïve approach is to delay the signal beyond the furthest echo perceptible by the RADAR, given the noise of its receiver and the power emitted: this approach was successfully...