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This paper presents the results of a German research project aiming at improving Urban Search And Rescue (USAR). It comprises two wireless search technologies for the detection and localization of trapped or buried unconscious victims and auxiliary assisting technologies. Victims can be localized through their cellular phone (GSM) if it is active, but it might be out of order. Results detecting inactive...
SAW tags and sensors often operate in 2.45 GHz ISM band using relatively narrow frequency Band = 82.5 MHz available there. The characteristics of these devices can be improved using the ultra wide band (UWB) technology. We have developed prototype devices operating in 200 MHz-400 MHz and 2000 MHz–2500 MHz UWB frequency ranges. The UWB reader operating in continuous wave radar mode for 2 GHz range...
Many applications of passive RFID labels (tags) require a reading range larger than 10m compounded with the limited to 10mW power radiated by the interrogation system. In this paper it is shown that SAW-tags operating in 2.45 GHz ISM band can meet such criteria. The losses in a “D7” SAW-tag with 24 bit of code (∼1.7∗107) were minimized to a record level of about 37dB for code responses by using a...
Within a running project, I-LOV1, wireless communication channel model for mobile communications is developed based on measurements in reconstructed disaster and salvage scenarios. Due to complex environment in ruins, great multipath interference can take place, which strongly impacts communication quality and localization accuracy. Besides numerous measurements investigated in environments such as...
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