It shows that under certain measurement errors and certain frequency scope, a constant, 8/3 or 64/9 is effective to modify one-dimensional or two-dimensional PSD value after applying Hanning window.

• 结果表明，在一定的波前频率及误差范围内，对加汉宁窗后1维功率谱密度的计算结果乘上一个常量8/3即可实现简单有效地修正。