世界物联网-物联与传感的门户网站！ 关键词: 射频、自动识别、零中频检测、反射调制 [gap=830]Keywords: radio frequency, automatic identification, multichannel homodyne, reflection modulation
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Reflection modulation technique 反射式调制技术
reflection modulation techniques 反射式调制技术
The mathematical expression of reflection modulation function is derived in this paper. The detection principles of two kinds of structures in the optic fiber colour mark sensor are presented.
文中导出了反射光调制函数的数学表达式，并介绍两种结构的光纤色标传感器的检测原理。
The principle and experimental results of phase modulation optical heterodyne detection technique for measuring reflection of optical cavity are described.
本文叙述了用位相调制光外差技术探测光学谐振腔反射特性的原理及实验结果。
Dynamic modulation of laser and laser bean, and offset to target reflection coefficient: laser bean is shaped and collimated to round and slender beam by using of the semiconductor laser.
激光器件及激光束的动态调制，目标反射系数补偿：采用半导体激光器，经过整形、准直成圆细光束。
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