摘要
传统单脉冲分布式光纤拉曼温度传感器(DOFRTS)脉冲宽度的增加能够提高信噪比、温度分辨率,但同时会降低空间分辨率。使用互补码光脉冲作为DOFRTS的探测脉冲,联合相关技术和数字平均对信号进行处理,可以大幅提高DOFRTS的性能。在不降低空间分辨率的前提下提高温度分辨率,减少测量所需时间。
Increasing pulsewidth of the probe pulse can improve the SNR and temperature resolution of a conventional singlepulse distributed optical fiber Raman temperature sensor （DOFRTS）, but will degrade the spatial resolution of the DOFRTS. Combined with using correlation technique and digital averaging technique to process signal, employing Golay complementary codes as the probe pulse of the DOFRTS can significantly enhance the performance of the DOFRTS, so that the temperature resolution can be increased, and the time necessary for the measurement can be decreased, while the spatial resolution will not degrade.
出处
《光纤与电缆及其应用技术》
2007年第1期19-23,共5页
Optical Fiber & Electric Cable and Their Applications
