基于时延估计的阵列信号辅助分析系统设计

Design of an Array Signal Time Delay Analysis System

为研究一种信号时延辅助分析系统,用于阵列信号的时延估计.进行了8通道数据采集系统设计并进行了目标信号采集试验.在选取了虚拟仪器作为辅助分析系统开发工具后,进行了包含信号波形回放、频谱分析、滤波分析、时延估计分析等模块在内的辅助分析软件设计.采用该分析系统进行了信号频谱分析、时延估计,并对时延结果进行了分析,研究结果表明该软件对阵列信号的时延估计研究具有很好的辅助作用.

To design a time delay auxiliary analysis system for array signal time delay estimation, a data acquisition system with eight channels is designed and signal acquisition experiment is carried out. A virtual instrument is selected as development tool for the analysis system design. The models included in the analysis system are waveform playback, spectrum analysis, filtering analysis and time delay analysis. Spectrum analysis and time delay estimation of the signal have been carried out with the system, and curve of the time delay vs. time is given. Research result reveals that the system is helpful in the research of time delay estimation.