基于DSP的短波宽带接收机信道化的实现

The Implementation of HF Broadband Receiver's Channelization Based on DSP

传统短波宽带接收机以硬件划分信道为主,无法实时处理大量的宽带信号。本文提出软件结合硬件来实现宽带信号中子信道划分,采用多相滤波算法实现信道化,它具有动态范围大,实现效率高等优点。并利用专用的DSP软件进行信道化仿真,显示了多相滤波器组对较理想多个信号的信道化效果。并对所得到的结果进行了分析。文中还介绍了短波宽带接收机信道化实现的硬件平台,对软件信道化DSP数据流处理模块的设计及功能作了说明,并从接收机整体结构上描述这种基于DSP的短波宽带接收机信道化的工作流程。

The traditional HF broadband receiver mainly uses the hardware for channelization, and can't process many broadband signals timely. The paper presents that software is combined with hardware for the HF Broadband Receiver's channelization, adopts the arithmetic of multi-phase filter that has wide dynamic range and efficient implement, uses special DSP software for simulation of channelization, shows the channelization results of several ideal signals by the multi-phase banks arithmetic, gets and analyzes the result. The paper introduces the hardware platform of HF broadband receiver's channelization, explains the design and function of the software-channelized DSP data-flow processing module, and describes the working process of HF broadband receiver's channelization based on DSP from the whole frame.