heterodyne detection

基本解释

Proposed is a double-sheet-metal structure FBG temperature sensor system based on heterodyne detection.
提出了一种基于外差探测的双金属片结构光纤布拉格光栅（FBG）温度传感系统方案。
Frequency offset locking technology is widely applied in laser heterodyne detection and laser radar, which is of great value.
偏频锁定技术广泛应用于激光的外差探测、激光雷达等方面，具有重要应用价值。
A novel approach to the imaging system by scanning with the advantages of both the confocal scanning mode and the optical heterodyne detection method are scanned.
计算和分析了红外聚焦光探测系统中光限制材料的几何排布对光限制效应的影响，给出了优化的几何分布。

外差探测
Balanced heterodyne reception is more sensitive than the traditional unit heterodyne detection, with higher signal-to-noise ratio and more effective use of energy of signal light and local oscillation light.
平衡外差接收方式比传统单元外差探测更加灵敏,信噪比更高,更能有效地利用信号光和本振光的能量。
相干探测
外差检测

外差检测
A Brillouin distributed sensing system for simultaneous temperature and strain measurement with heterodyne detection is proposed. Based on the performance measurement of electro-optic modulator, the working parameters of the system are optimized.
设计了一套外差检测式光纤温度和应变同时传感系统,以电光调制器性能测试为依据,优化了系统参数,实现了采用声光调制的背向散射时域波形的测量。
外差探测
Based on the low-coherence interferometry, OCT technology, which integrated the laser technique, optical heterodyne detection, precision machinery control and computer image processing, enjoys a tremendous prospect in the field of biomedicine imaging.
OCT技术基于低相干干涉原理,集成了激光技术、外差探测、精密机械控制和计算机图像处理,在生物医学成像领域中有着巨大的应用前景。
物理学
差拍探测