高/低通复合多通道系统辨识的测试信号设计

从频域的角度研究了二进制多频序列(Muhifrequency Binary Sigal).从该信号的基本特点入手,通过对信号变化疏密的设计,调整信号的频谱分布.当已知待测系统的频谱集中在某些频段时,选取适当的二进制多频序列信号,能使测试信号的频谱也集中在那些频段,能充分地利用测试信号.大大提高了信噪比.设计出高频和低频复合的二进制多频序列信号.应用于一个通道是高通的,另一个通道是低通的二输入系统,能同时充分激励2个通道,取得较好的辩识效果.仿真算例可以看出有效性.

Test Signal Design for High/Low Pass Multivariable System Identification

The multifrequency binary sequence is discussed in terms of frequency domain. Based on the feature of this signal,the spectral distribution of the signal is adjusted by using the design for signal's distribution.Suitable multifrequency binary sequence is chosen when the spectrum of systems to be tested concentrates on some frequency bands,then the spectrum of test signal can be concentrated on the same frequency band.It could make full use of the test signal and raise signal-to-noise ratio rapidly.A multifr...