一种基于成型滤波器的信号源补偿方法

针对主动声纳信号源输出信号畸变影响参数估计问题，提出了一种基于成型滤波器的信号源补偿方法。该方法首先求取信号源中功率放大器非线性变换传递函数；然后根据该传递函数构造成型滤波器；最后由成型滤波器对信号源生成信号进行补偿修正，得到未畸变的输出信号。理论分析和仿真结果表明，在仿真条件下，该方法可有效解决信号源输出信号畸变问题，提高信号源输出信号在主动声纳应用中的鲁棒性，使频带宽度估计准确率提高40%以上。

A compensation method of signal source based on the wave filter

For the problem of the signal distortion of active sonar signal source output signal, a compensation method of signal source based on the wave filter was proposed. First the nonlinear transfer function of power amplifier was acquired. Then the wave filter was constructed via the nonlinear transfer function. Finally, the output signal source signal without distortion was corrected according to the wave filter. Theoretical analysis and experimental results show that, under the condition of this paper experimental, the method can effectively solve the problem of the signal distortion of active sonar signal source output signal, improve the robust of signal source output signal in active sonar, and the estimation accuracy of frequency bandwidth is improved more than 40%.