Electromagnetic pulses are applied to the sensor and the reflections are recorded with a timedomainreflectometer.
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。
2
The principle of Brillouin optical timedomainreflectometer (BOTDR) is introduced and its application to the strain monitoring of the strain distribution of the reinforced concrete beam is studied.
At the same time, it discusses the elements influencing the test accuracy of optical timedomainreflectometer (OTDR) and measures for eliminating test error.