用于阵列处理的多通道数据采集系统

Design of a Multi-channel High Speed Data Acquisition System for Array Signal Processing

介绍用于阵列处理的多通道数据采集卡的实现方案。数据采集卡具有8个采集通道,每个通道最高支持65 MS/s的采样率。该数据采集卡主要用于阵列接收机的中频采样、正交插值等信号处理,并具有对接收机及采集卡的通道幅相误差进行校正的功能以减小通道间的幅度和相位的差异。输出数据通过背板的LVDS接口和后面的信号处理板进行数据传输。

A concept of muhi-channel high speed data acquisition system used in antenna array signal processing is introduced. With 8 channel A/D converters, the DAQ card accomplishes data acquisition on intermediate frequency, and performs DDC, array gain and phase error calibration. Besides, it also uses LVDS interface to transfer data to the host array data processing board.