Electromagnetic pulses are applied to the sensor and the reflections are recorded with a time domain reflectometer.
在传感器上施加电磁脉冲，通过时间域反射计记录反射数据。
Abstract: The principle of distributed temperature sensor system based on Raman Scattering and optical time domain reflectometer (OTDR) is explained.
摘要：阐述了基于拉曼背向散射和光时域反射(OTDR)技术的分布式光纤测温系统的原理。
By using wavelength division multiplexing, optical switch and optical time domain reflectometer (OTDR) technology, networks can be supervised automatically.
该方案将光波分复用技术、光开关和OTDR技术相结合，实现了对光纤通信网的自动在线监测。
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