The method can realize time variant merging automatically, result in simultaneous corrections both for phase and amplitude and avoid the influence of noise.
此方法可自动实现时变拼接，达到相位和振幅同时校正，而且能避免噪声的影响。
2
First, the generation mechanism, components and frequency characteristic of radiated noise of naval ships are studied. There exists periodical modulation for the amplitude of propeller noise.
首先讨论了舰船辐射噪声的产生机理、构成和频率特性，指出螺旋桨噪声的振幅存在周期性调制。
3
Some realization ways of measurement are discussed, including the maximum output power, output amplitude and noise bandwidth.