信号维数的估计，阵列信号处理的高分辨率估计，供做算法研究人员参考，pwm整流器的建模仿真，预报误差法参数辨识-松弛的思想，有较好的参考价值，基于chebyshev的水声信号分析，基于分段非线性权重值的Pso算法。- Signal dimension estimates, High-resolution array signal processing estimates, Algorithm for researchers to do reference, Modeling and simulation pwm rectifier Prediction Error Method for Parameter Identification- the idea of relaxation, There are good reference value, Based chebyshev underwater acoustic signal analysis, Based on piecewise nonlinear weight value Pso algorithm.