| 主权项 |
1. A wind speed measurement device, comprising:
a first laser diode configured to emit a laser beam, referred to as the emitted beam, focusing means for focusing the emitted beam at a predetermined focal distance between 5 centimeters and 2 meters, receiving means for receiving a reflected beam produced by an air particle reflecting the emitted beam, the receiving means being associated with the first laser diode by self-mixing and configured to provide an interference signal corresponding to an interference occurring between the emitted beam and the reflected beam by the self-mixing; a signal processing means configured to deduce a speed of the particle; and transmission means for transmitting the interference signal to the signal processing means, the signal processing means being configured to: select a first portion of the interference signal, the first portion having an amplitude or a power exceeding a threshold corresponding to an amplitude or a power of a signal obtained by a measurement in a windless location, remove a second portion of the interference signal having an amplitude or a power that does not exceed the threshold corresponding to the amplitude or the power of the signal obtained by the measurement in the windless location, and deduce the speed of the particle based on an analysis of only the first portion of the interference signal. |
