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Detection and localization of non-moving human targets by ultra-wideband radars (sensors) is becoming crucial in the last years. In contrast to a moving target localization this task is much more challenging. A movement of a static person caused by the respiratory motion is barely observable. In this paper, a new method of respiratory motion detection based on Welch periodogram is presented. The performance of this method is demonstrated on a scenario with real radar data obtained by a measurement at laboratory conditions. Moreover, a custom-made flat antipodal Vivaldi antennas are used. Despite of the conditions, one static person is succesfully detected and localized.

Static Person Detection and Localization Based on their Respiratory Motion Using Various Antenna Types