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从理论上分析利用Ｆ－Ｐ标准具组实时测量被动入射激光波长的能量分布及信噪比，提供了计算公式及误差分析，给出了实验光路图、处理软件框图和一组实验照片；最后对给出的实验结果数据进行了讨论。
The energy distribution and signal-to-noise ratio of passive incident laser wavelength measured by F-P etalon group in real time are analyzed theoretically. The calculation formula and error analysis are provided. The experimental optical path diagram, the software frame diagram and a set of experimental photos are given. Finally, The experimental results given are discussed.