论文部分内容阅读
为了验证微波调制激光技术进行速度测量的可靠性,构建了一套通过微波调制激光技术测速的实验系统。利用激光作为载波,微波作为模拟调制信号对激光信号进行强度调制,光电探测器对信号光强度进行直接探测。利用射频电路,获得多普勒频移数据反演发射端和接收端相对运动速度。同时通过测量运动距离和时间计算平均运动速度,作为第三方数据,用于与微波调制激光技术测速的数据进行比较。理论分析了这套系统的原理并对其进行了实验验证。实验结果表明,利用微波调制激光技术测速的数据与第三方数据平均偏差小于2.0%,符合性好。
In order to verify the reliability of the speed measurement of the microwave modulation laser technology, a set of experimental system for speed measurement by the microwave modulation laser technology was constructed. The laser is used as a carrier, the microwave is used as an analog modulation signal to modulate the intensity of the laser signal, and the photodetector directly detects the intensity of the signal light. The use of radio frequency circuits, Doppler frequency shift data obtained from the transmitter and receiver to retrieve the relative velocity. At the same time by calculating the distance traveled and the time to calculate the average velocity, as a third-party data for microwave modulation with laser technology to compare the speed data. The theory of this system is analyzed theoretically and experimentally verified. The experimental results show that the average deviation between the data measured by the microwave modulation laser technology and the third party data is less than 2.0%, and the compliance is good.