Hunting hunting is a phenomenon that can occur upon load changes in which the frequency or the voltage continues to rise above and fall below the desired value without reaching a steady - state value 游车游车是一种在负载变化引起的频率、电压高于或低于期望值,无法达到稳定的现象。
From simulation results , we get the following main conclusions : 1 ) the convergence performance can be improved with the ist - tap initialization strategy for the underwater acoustic channel established in this paper . 2 ) both the convergence rate and the steady - state value of the average squared error should be taken into account when choosing the step - size 得到的主要结论为:对于本文所建立的水声多径信道,盲均衡算法采用第一个抽头初始化方案其收敛性能较好;选取迭代步长时要兼顾收敛速度和稳态误差;在保证收敛性能的基础上,可选择阶数较小的均衡器。
Then we turned in the input laser to observe the decline of phase conjugate reflectivity . measuring dark storage time , we found that the phase conjugate reflectivity declined to 50 % of steady - state value when photorefractive crystal was in dark condition for 30 minutes . even after 9 hours , there still existed remaining reflectivity , which could n ' t be measured by our detector 因而研究了晶体内位相共轭光栅存储特性,即观察位相共轭光栅形成后在黑暗条件下能存储的时间,实验结果得出位相共轭光栅在黑暗中30分钟后,位相共轭反射率下降到原来的50 ,而在黑暗中9小时后,位相共轭光非常微弱,无法测出。