短波宽带接收机信道化的设计与仿真

短波宽带接收机是短波接收领域近年来研究的热点，接收信道化处理则是其中一个非常重要的环节。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。该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，并利用两种不同的软件进行信道化仿真，分别显示了普通滤波器组和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。在使用DSP仿真软件实现信道化时，要考虑到硬件的实际情况，可采用Visual DSP＋＋自带的代码性能分析工具来评价代码的性能，提高处理信号的实时性。

Design and Simulation of HF Broadband Receiver's Channelization

The HF Broadband Receiver is a focus of research in the domain of HF receiving in recent years, and the receivers channelization is one of the very important parts. The traditional HF Broadband Receiver mainly uses the hardware for channelization, and can't process many broadband signals timely. The paper presents a method, in which the software is combined with hardware for the HF Broadband Receivers channelizafion, adopts the arithmetic of multi-phase filter that has wide dynamic range and efficient implementation, uses two different software for simulatiing the channelization, shows the channelization results of several ideal signals by the general filter banks arithmetic and the multi-phase banks arithmetic, and analyzes the result obtained. When the DSP software simulates the channelization, the condition of hardware must be considered. The code performance analysis tools of VisualDSP + + estimate the performance of code, and improve the real-time signal processing.