The measurement of the full polarimetric matrix at microwave frequency of the road surface permits the acquisition of the information about the presence of ice on the road. This acquisition must be carried out in the automotive scenario with high reliability. False alarms can be avoided if the system would acquire only the road scattering. To this aim the system must acquire a radar reflectivity diagram of the scenery and filter out only the signal component due to the road surface thanks to the knowledge of the car speed from the tachometer. Further, for the feasibility, the application requires a smart system with cheap components in order to reduce cost. In the system proposed a consumer CW transceiver at 24 GHz is used and in order to show the feasibility of the system a set-up has been realized. the preliminary tests have shown that the system can measure the polarimetry matrix of targets moving at different speeds. This could make it possible to measure the road backscattering even in the presence of high echoes coming from other obstacles normally present on the road.
Road surface monitoring by means of a microwave dual band coherent polarimeter and velocity gating
Überwachung der Straßendecke mit Hilfe eines Mikrowellen-Dualband-Kohärenzpolarimeters und durch Geschwindigkeitsaustasten
2000
7 Seiten, 5 Bilder, 9 Quellen
Aufsatz (Konferenz)
Englisch
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