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- OFDR Optical Frequency Domain Reflectometer 光频域反射计
- optical frequency domain reflectometer 光频域反射计
- frequency domain reflectometer 频域反射仪
- The methods employ difference traces obtained from optical time domain reflectometer (OTDR) measurements. 识别方法利用由光时域反射计（OTDR）测量获得的差分迹线。
- The algorism for frequency domain use FFT to realize. 频域算法采用了快速傅立叶变换实现；
- This paper presents the principle of optic time domain reflectometer (OTDR) and the fault location of optic fiber cable line by OTDR. 介绍了光时域反射仪(OTDR)的测试原理及其对光缆线路中经常出现的光纤故障点进行了分析,并简述了用OTDR测量时应注意的问题。
- The frequency domain, the holograph and related concepts have all been used. 频率域、全息及有关的概念都已采用。
- Newly ones based on the time domain reflectometer (TDR), optical fiber sensing will make the probe and research works be more accurate, efficient and economical. 提出以同轴电缆时域反射、光纤传感的新一代技术将成为边坡稳定“无创”监测的发展方向。
- Finally, it is easy to move form the Laplace domain into frequency domain. 最后，从拉氏域转换到频率域也很容易。
- A comparison of IIL with OAI in theory and frequency domain is given. 从成像原理和频域范围的角度对IIL和OAI进行了理论研究、计算模拟和对比分析。
- A distributed optic fiber type strain sensing system based on optical time domain reflectometer and used for monitoring large scale structural strain and deformation state is studied in the paper. 研究了一种用于大型工程结构应变、变形状态监测的基于光时域反射技术的分布式光纤应变传感系统。
- A Wiener weighting adaptive time delay estimation algorithm based on frequency domain is presented. 提出了一种基于频域自适应滤波的维纳加权时延估计算法。
- To indicate the effect of gyro moment on the mount system, including frequency domain response and time domain response, the new system was analyzed. 对新的动力总成悬置系统动力学模型进行计算分析，研究了陀螺矩阵对频域、时域响应的影响。
- Frequency domain:total frequency components(TF),low frequency components(LF),high frequency components(HF). 频域分析:总频谱成分(TF),低频成分(LF),高频成分(HF)。
- Test methods of optical time domain reflectometer 光学时域反射计的试验方法
- It is better to group pilot tones together into clumps that are equispaced in the frequency domain. 可以证明，在快时变环境下，分组且每组等间隔分布于频域上的导频序列有着更好的系统性能。
- Mini Optical Time Domain Reflectometer 手持式光时域反射计
- The shift of sample area can be resolved by signal resample in frequency domain or time domain. 从理论上分析了如何 在频域和时域采用信号重采样区间偏移的问题。
- Our proposed high speed dark frame subtraction can solve this problem by analyzing patterns in frequency domain. 我们所提出的高效率暗电流消去法藉由分析频率空间图形可以解决上述问题。
- optical time domain reflectometer (OTDR)； 光学时域反射计(OTDR)；
