摘要
针对快变化下的MTM和WOSA谱估计方法的性能进行分析和比较,并用仿真实例具体讨论它们的性能差异。最后,简单讨论WOSA相邻分段之间的相对偏移量对其泄漏性能的影响。通过分析可以得到:在计算量相当的情况下,使用合适的窗口数目时,MTM的估计性能较好;若不考虑计算量,WOSA的方差性能较好,而泄漏和分辨率比较差。
The analysis and comparison of the performances between MTM and WOSA are given when the spectrum of interest rapidly varies.The differences between their performances are discussed by an example.Finally,the influence of the relative shift between the neighboring WOSA segments on its leakage performance is simply discussed.It can be concluded that MTM has a performance advantage of WOSA with equivalent computational loads and appropriate number of the tapers.On the other hand,the variance performance of WOSA is better without taking account of the computational load,but the leakage and the resolution are worse.
出处
《计算机与数字工程》
2008年第3期16-17,24,共3页
Computer & Digital Engineering
