【摘要】 测试动态系统脉冲反应时,选择不同类型的输入信号会产生不同的测试精度。在输入信号的功率和非线性的约束条件下,白噪声序列为一个最优输入信号。在实际系统中,白噪声没有周期性,幅值不易控制,常以具有周期性的伪随机二位式序列(PRBS)来取代。本文介绍用n=2-25级移位寄存器产生最大长度N=2~n-1的PRBS的方法(称M序列)及其应用实例。更多还原

【Abstract】 Testing dynamic systems for impulse response with input signals of different types will produce results different in accuracy. Under constraints of power and nonlinearity the white noise sequence is an optimal input signal, which, in actuality, is often replaced by the pseudo random binary sequence (PRBS) of periodicity, as the former is not periodic and is hard to control its magnitude. In this paper a method of generating PRBS of the maximum length N=2~n-1 by means of an n-stage (n=2-25) shift register and application examples are introduced.更多还原