自由传播矢量图解法中90°相移的探讨

Studies on 90° Phase-shift in the Vector Graph Method Under Free Propagation

通过对自由传播矢量图存在的90°相移问题的分析,得到波面上各点发出的次波相对入射波相位超前90°的结论,并在此基础上讨论了利用矢量图解处理问题的2种方法.

The leading phase 90° of the subwave at each point in the waveplane tothe incident wave is given,based on the vectorgraph method under free propagation condition.Two useful methods about the 90°phase shifted are discussed.