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1. 发明申请

US20220187158A1 METHOD AND APPARATUS OF FULL-FIELD VIBRATION MEASUREMENT VIA MICROWAVE SENSING 有权
公开(公告)号：US20220187158A1
公开(公告)日：2022-06-16
申请号：US17288264
申请日：2020-05-19
申请人： SHANGHAI JIAO TONG UNIVERSITY
发明人： Zhike PENG , Yuyong XIONG , Guang MENG
IPC分类号： G01M7/02 , G01S13/88 , G01S13/82 , G01S7/35
摘要： The present invention relates to a full-field vibration measurement method based on microwave sensing, which is characterized by comprising the following steps: step 1, repeatedly transmitting linear frequency modulated continuous wave microwave signals by means of one or more transmitting antennas; step 2, receiving reflected signals from targets and/or measurement points by means of a plurality of receiving antennas, and performing frequency mixing on received signals and local oscillator signals to obtain multi-channel intermediate frequency baseband signals; step 3, acquiring intermediate frequency baseband signals in various channels, and resolving and positioning targets and/or measurement points within the full field based on a joint range and angle dimension; and step 4, extracting vibration displacement time-domain information of targets to be measured and/or measurement points. By means of the full-field vibration measurement method based on microwave sensing provided in the present invention, synchronous vibration information measurement of targets and/or measurement points within the full field is achieved by positioning and resolving the targets and/or measurement points within the full field based on a joint range-angle dimension and tracking phase evolution, thereby solving the difficulties in the prior art that full-field vibration measurement and interference suppression cannot be achieved.

2. 发明公开

US20240151842A1 METHODS AND SYSTEMS OF SCANNING MICROWAVE VIBRATION AND DEFORMATION MEASUREMENT 审中-公开
公开(公告)号：US20240151842A1
公开(公告)日：2024-05-09
申请号：US18266339
申请日：2022-08-18
申请人： SHANGHAI JIAO TONG UNIVERSITY
发明人： Yuyong XIONG , Zhike PENG
IPC分类号： G01S13/42 , G01S7/28 , G01S7/35 , G01S13/34
CPC分类号： G01S13/426 , G01S7/2813 , G01S7/352 , G01S13/342
摘要： A scanning method and system for measuring microwave vibration and deformation include simultaneously transmitting linear-frequency-modulation continuous waves by using a plurality of transmit antennas and enabling a main lobe of a synthesized beam to be directed towards a specific angle direction; receiving echoes by using a plurality of receive antennas to obtain vibration and deformation displacement values of a single target or multiple targets in an angle direction 1 of a cycle; through the phase shift control on the plurality of transmit antennas, extracting vibration and deformation displacement values of a single target or multiple targets in an angle direction 2 of the cycle based on the foregoing method; according to a measurement requirement, measuring and extracting vibration and deformation displacement values of a single target or multiple targets in another angle direction of the cycle; and obtaining vibration and deformation displacement time sequence values of all scanned points.

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