heterodyne detection

基本解釋

Proposed is a double-sheet-metal structure FBG temperature sensor system based on heterodyne detection.
提出了一種基于外差探測的雙金屬片結(jié)構(gòu)光纖布拉格光柵（FBG）溫度傳感系統(tǒng)方案。
Frequency offset locking technology is widely applied in laser heterodyne detection and laser radar, which is of great value.
偏頻鎖定技術(shù)廣泛應(yīng)用于激光的外差探測、激光雷達(dá)等方面，具有重要應(yīng)用價(jià)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.
計(jì)算和分析了紅外聚焦光探測系統(tǒng)中光限制材料的幾何排布對光限制效應(yīng)的影響，給出了優(yōu)化的幾何分布。

外差探測
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傳統(tǒng)單元外差探測更加靈敏,信噪比更高,更能有效地利用信號光和本振光的能量。
相干探測
外差檢測

外差檢測
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.
設(shè)計(jì)了一套外差檢測式光纖溫度和應(yīng)變同時(shí)傳感系統(tǒng),以電光調(diào)制器性能測試為依據(jù),優(yōu)化了系統(tǒng)參數(shù),實(shí)現(xiàn)了采用聲光調(diào)制的背向散射時(shí)域波形的測量。
外差探測
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技術(shù)基于低相干干涉原理,集成了激光技術(shù)、外差探測、精密機(jī)械控制和計(jì)算機(jī)圖像處理,在生物醫(yī)學(xué)成像領(lǐng)域中有著巨大的應(yīng)用前景。
物理學(xué)
差拍探測