Microwave Doppler Sensors Measuring Vehicle Speed and Travelled Distance: Realistic System Tests in Railroad Environment
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چکیده
A high-performance 24 GHz microwave Doppler sensor system for non-contact ground speed measurement is presented. Its potential for positioning tasks, as well as slippage control in railway applications has been demonstrated in extended measurement campaigns. The microwave front-ends are based on highly stabilised dielectric resonator oscillators and low-cost patch antennas. Employing model based algorithms implemented on signal processor an accuracy of about 1 % for the speed measurement and of about 2 m / 1000 m for the distance measurement has been obtained.
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تاریخ انتشار 2000