For high order QAM ( Quadrature Amplitude Modulation) signals, the residual square error of CMA ( Constant Modulus Algorithm) is unacceptably large and the convergence rate of MMA ( Multi Modulus Algorithm) is too slow. 对于高阶QAM信号,常数模算法的收敛误差不为零,而多模算法的收敛速度慢。
Through constructing a function which makes the values to be zero in the amplitude value points of QAM signals, CF algorithm improves the convergence speed and accuracy by using exact information of QAM signals. 该算法通过构造一个函数,使得QAM信号幅度取值点为该函数的零点,再充分利用QAM信号的确定信息,提高算法的收敛速度和精度。
An revealed that the thermal error calibration mechanism can guide the design of calibration control system and genetic algorithms of optimizing amplitude parameters have an advantage of quick convergence. 实例研究表明,热误差校正控制机理对变形校正控制系统的设计具有指导作用,遗传优化热控制源幅值参数具有快速全局收敛的优点。
Aerodynamic parameters and the projectile body parameters mainly decide the size of amplitude of the limit coning motion and the speed of angle of attack convergence. 气动参数与弹体参数主要决定极限圆运动的振幅大小和攻角收敛快慢。