Author(s):
Shalini Kashyap, Amit Birwal, Kamlesh Patel

Abstract:
In this work, the performance of OmniPreSense Module OPS243-C has been studied for range and speed detection, at 24 GHz, whose results are obtained using Fast Fourier Transform (FFT) commands using a MATLAB script and verified with the physical range of objects used. Four custom-made scenarios have been created, two using stationary objects namely a stand and a tripod for their range at two different distances, and two using moving objects, a person and a ceiling fan for their respective speed. A total of 10 observations for range detection are taken inside an anechoic chamber and reported with a range of percentage errors, which varies for objects and their range. The mean values of the tripod and stand range are detected at 4.06 m and 0.42 m, respectively, in scenario 1 whereas in scenario 2, the mean values of the tripod and stand range are found to be 2.56 m and 1.53 m, respectively. The standard deviations in these observations are found from 0.09 to 0.12 m for range detection. In scenario 3, the speed of a moving person is found to be varied from 2.0 m/s to -2.1 m/s for Inbound and Outbound directions from the module at a distance of 4.62 m. For scenario 4, a variation in the speed of the rotating fan is observed at the knob positions (0 to 4) from the OFF to ON condition of the fan and is found to be varied from 0.1 m/s to 4.9 m/s at different knob positions. In both scenarios 3 and 4, the speed data is found with a standard deviation less than 0.5 m/s from 10 observations. In this analysis, results confirm that the OPS243-C can detect stationary and moving objects successfully.

Pages: 82-90

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