Ultra-high speed time-frequency fourier laser velocimetry method and system
US12366659B2 · kind B2 · utility
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Key dates
| Filing date | Nov 17, 2021 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | May 23, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0057
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laser velocimetry method and system are provided. In the method, an ultrashort pulse laser is subjected to temporal broadening, beam splitting and spectrum broadening in sequence to from a three-dimensional measurement space. When an object moves in the measurement space, a first signal light s_1, a second signal light s_2, a third signal light s_3 are generated, based on which velocity components vy, vx, and vx of the target object can be obtained, respectively, so as to obtain the velocity of the object in accordance with a formula of v=vx·i+vy·j+vz·k.
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