In addition to alternating phase difference between two aims of interferometer, the intensity of light of the interference fringes will vary in the same frequency, which is called as phase modulation.
当两相干光附加一按固定频率变化的相位差时，其干涉条纹的光强将随之交变，即为相位调制干涉。
Trans station interference is a distant interference of the same frequency in multi station microwave transmission.
越站干扰是微波多站传输中的一种同频远端干扰。
Meanwhile, an algorithm is presented for suppression of same-frequency interference.
同时提出了抑制同频干扰的算法。
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