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1.发明公开公开(公告)号：US20240310479A1
公开(公告)日：2024-09-19
申请号：US18280110
申请日：2022-02-23
发明人： Lars Weisgerber , Mario Schuehler
CPC分类号： G01S7/2886 , G01S7/2883 , G01S13/0209 , G01S13/582 , H04L25/0212
摘要： An ultra-wideband sensor transmits impulse radio signals at different times and generates respective channel impulse responses that describe a respective reflected signal as a function of a path delay. The channel impulse responses are used to generate a time-variant channel impulse response in which the channel impulse responses are arranged according to the times of transmission of the respective associated impulse radio signals. At least one respective local maximum of the scatter function quantity, characterized by a respective Doppler frequency and a respective path delay, is detected in scatter functions of respective time windows. A predetermined selection method is used to select at least one local maximum as the respective observation maximum to be tracked for motion detection. A signal characteristic of the channel impulse response is generated for the respective observation maximum to be tracked and a predetermined motion detection method detects at least one predetermined movement.
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公开(公告)号：US20240151841A1
公开(公告)日：2024-05-09
申请号：US18280142
申请日：2022-02-23
CPC分类号： G01S13/0209 , G01S7/415 , G01S13/46 , G01S13/76 , G01S13/872 , G01S13/878 , G01S13/88
摘要： An ultra-wideband sensor transmits impulse radio signals over a predetermined time period, detects echo signals of the impulse radio signals by way of at least one sensor of the ultra-wideband sensor and generates a time-variant channel impulse response that describes the echo signals received by the at least one sensor as a function of a time at which the respective impulse radio signal of the predetermined time period was transmitted and a path delay, uses a predetermined selection method to ascertain at least one ascertained path delay, generates a signal characteristic of the time-variant channel impulse response for the at least one ascertained path delay, uses a predetermined comparison method to determine a similarity of the signal characteristic to a reference characteristic, and detects a predetermined movement pattern associated with the reference characteristic if the similarity meets a predetermined similarity criterion.
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