【作者】 郑康煌； 欧晓丽； 孙博； 程恩；

【Author】 ZHENG Kanghuang OUXiaoli SUN Bo CHENG En Department of Communication Engineering, Xiamen Unveristy, Xiamen, Fujian, 361005

【机构】 厦门大学通信工程系；

【摘要】 针对水声跳频通信的鉴频系统要求较高的频率分辨率,本文提出了一种基于高Q数字带通滤波器的实现方法。简要介绍了鉴频系统的组成原理。根据给定的滤波器技术指标,分析比较了各种滤波器实现方法的优劣,确定采用最大误差最小化准则的等波纹逼近方法来设计FIR滤波器。通过Matlab 仿真得到FIR滤波器的系数,并应用TI公司的TMS320C5416数字信号处理器进行实现。更多还原

【Abstract】 Since underwater acoustic frequency-hopping (FH) communication system requires high resolution of frequency. This paper proposes an implementation method based on high-Q filter. Firstly, frequency demodulation system is briefly introduced. According to the given performance requests of the filter, implementation methods of the filter are compared, and the equiripple approximation method with maximal error minimization principle is used to design FIR filter. The coefficients of FIR filter are obtained through MATLAB simulation, and the digital signal processor TMS320C5416 of TI Co. is used to implement the filter.更多还原