高分辨率频谱分析仪的设计

Design for High Resolution Spectrum Analyzer

分析目前FFT频谱仪的缺陷以及实现的难点,提出了一种新型基于数字信号处理技术的频谱分析系统;使用先进的数字信号处理器,缩减了分立元件的数量,提高了系统的稳定性和扫频的速度;采用数字下变频的FFT算法,提高了频谱的分辨率。

Analyzing the defect and difficulty of implementation of the current FFT spectrum analyzer, a new spectrum analyzer based on digital signal processing technology is proposed. This system has adopted the algorithm of digital down convert FFT, so the frequency resolution is improved greatly. At the same time, the advanced DSPs are adopted to reduce the amount of separate device and promote the stability and scanning velocity of the system.