弹道 FFT频谱分析器研究

文中基于频域测速的基本原理,研究一种弹道FFT分析器系统。在给出该系统基本结构后,研究了在强地物杂波干扰环境中保证测频精度、分辨率和动态范围的基本方法。文中还着重介绍了用于这种频谱分析系统的可编程高速A/D数据采集系统和以TMS32010为主体的高速FFT协处理器系统。它们与IBM/PC和加权ZFFT分析软件共同构成了一个完整的频谱分析系统。

Study of a Trajectory FFT Frequency Spectrum Analyzer

Based on the fundamental principles of velocity measuring in the frequeucy domain, a trajectory FFT spectrum analyzer is studied. First of all, the const- ruction of the system is given. Then, some basic algorithms,which can improve the frequency precision, resolution and dynamic range under the circumstance of strong clutter interference are studied. The paper also put emphasis on the design of a programmable A/D data acquisition system and a high speed FFT co-operation system which iS based on TMS32010. An IBM/PC microcomputer, the weighted ZFFT analyzing software and the above two systems form the whole frequency spectrum analyzing system.