US 12,436,259 B2
Methods and systems of scanning microwave vibration and deformation measurement
Yuyong Xiong, Shanghai (CN); and Zhike Peng, Shanghai (CN)
Assigned to SHANGHAI JIAO TONG UNIVERSITY, Shanghai (CN)
Appl. No. 18/266,339
Filed by SHANGHAI JIAO TONG UNIVERSITY, Shanghai (CN)
PCT Filed Aug. 18, 2022, PCT No. PCT/CN2022/113245
§ 371(c)(1), (2) Date Jun. 9, 2023,
PCT Pub. No. WO2023/201941, PCT Pub. Date Oct. 26, 2023.
Claims priority of application No. 202210428888.3 (CN), filed on Apr. 22, 2022.
Prior Publication US 2024/0151842 A1, May 9, 2024
Int. Cl. G01S 13/42 (2006.01); G01S 7/28 (2006.01); G01S 7/35 (2006.01); G01S 13/34 (2006.01)
CPC G01S 13/426 (2013.01) [G01S 7/2813 (2013.01); G01S 7/352 (2013.01); G01S 13/342 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A scanning method for measuring microwave vibration and deformation, comprising the following steps:
step S1: simultaneously transmitting linear-frequency-modulation continuous waves by using a plurality of transmit antennas, performing a phase shift control on transmit signals of the plurality of transmit antennas, and enabling a main lobe of a synthesized beam to be directed towards a measured specific angle direction;
step S2: receiving echoes by using a plurality of receive antennas to obtain multi-channel baseband signals, and performing a non-linear demodulation processing on the acquired multi-channel baseband signals to obtain vibration and deformation displacement values of a single target or point for inspection in an angle direction 1 of a cycle or obtain vibration and deformation displacement values of a plurality of targets or points for inspection in the angle direction 1 of the cycle;
step S3: offsetting an angle of the main lobe of the synthesized beam through the phase shift control on the plurality of transmit antennas, and extracting vibration and deformation displacement values of a single target or point for inspection in an angle direction 2 of the cycle based on the foregoing method or vibration and deformation displacement values of a plurality of targets or points for inspection in the angle direction 2 of the cycle; according to a measurement requirement, measuring and extracting vibration and deformation displacement values of a single target or point for inspection in another angle direction of the cycle or measuring and extracting vibration and deformation displacement values of a plurality of targets or points for inspection in the another angle direction of the cycle; and
step S4: according to the foregoing scanning method, at intervals of a specific cycle time, measuring vibration and deformation through circular scanning in angle directions, to obtain vibration and deformation displacement time sequence values of all scanned points or targets for inspection.