基于卡尔曼滤波算法的短波降噪系统设计

Research on Short Wave Noise Reduction Technology Based on Kalman Filtering Algorithm

为提升短波信号传输的质量和稳定性,提高无线短波信号信噪比,笔者将卡尔曼滤波算法应用于短波降噪技术,提出了基于卡尔曼滤波算法的短波降噪系统。系统采用DSP模块和音频解码模块相结合的框架结构,给出了DSP模块和音频模块的连接方式。该系统结构紧凑,利用DSP处理器的数字信号高速处理能力,将卡尔曼滤波算法实际应用于短波数字信号处理,实现了对信号噪声的抑制。

In order to promote shortwave signal transmission quality and stability,improve SNR short-wave radio signals,the Kalman filtering algorithm used in short wave noise reduction technology,and put forward the framework for Kalman filtering algorithm design,by adopting the combination of DSP and audio decoding module frame structure,the connecting way of DSP and audio module is presented.The system has a compact structure,and the Kalman filtering algorithm is applied to the short-wave digital signal processing by using the DSP processor's high-speed digital signal processing capability,so as to suppress the signal noise.