coherence distance

基本解释

The spatial coherence of the beam is not relevant to its initial coherence for longer propagation distance.
長距離傳輸後，光束空間相乾性與光束初始相乾長度不再有關。
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Various parameters insisting of spectrum of source, imaging distance and spatial coherence can influence visibility of fringes. Their referential values were presented in this paper.
條紋對比度受光源譜分佈、成像距離、光源空間相乾性這些因素的影響，對蓡數的研究給出了它們的蓡考值。
As the PN-code high performance of long period and the coherence, the very long distance and high precision ranging can be reached at the same time. Multi-target TT&C can be reached by CDMA of PN.
由於偽隨機碼固有的測距能力——其長周期和互相關特性，使得在測距距離和精度方麪可以同時提高，採用碼分多址技術可以實現對多個目標同時進行測控。