The dominant frequency position´s influence on FFT spectrum leakage

When the FFT spectrum leakage was discussed before, the dominant frequency position was not considered. In fact, the FFT spectrum is the convolution between the real time series and the window function in the frequency domain, the dominant frequency position influence on the leakage should not be ignored. The leakage regularity of different dominant frequency position was deduced for the fundamental wave FFT spectrum, and a correction method was also put forward.