FPGA-based Multi-channel Information Processing Equipment for Testing of Digital Radar
基于FPGA的数字雷达测试多通道信息处理装置

摘要

与传统模拟相控阵雷达相比，数字雷达天线阵列的收发通道由模拟元件发展为数字TR元件，阵列回波数据由模拟信号变为经过数字处理的光纤信号，传统的以矢量网络分析仪为核心的正面测试系统已不能满足数字雷达正面测试要求。为了解决数字阵列雷达天线测试问题，本文设计了一种多通道信息处理装置，可实现多达72通道高速光纤数据的接收与处理。本文对该设备的硬件组成和软件功能进行了分析，给出了数字波束形成技术的理论推导，并对软件设计中数字波束形成算法实现、原始数据提取、BIT信息提取、数据网络传输等功能进行了分析。最后对应用效果进行了总结。

Abstract

Compared with the traditional analog phased array radar, the transceiver channel of the digital radar antenna array has developed from an analog component to a digital TR component, and the echo data of the array has changed from an analog signal to a digitally processed optical fiber signal. The traditional frontal test system with vector network analyzer as the core can no longer meet the frontal test requirements of digital radar. In order to solve the antenna test problem of digital array radar, this paper designs a multi-channel information processing device, which can realize the reception and processing of up to 72 channels of high-speed optical fiber data. In this paper, the hardware composition and software function of the equipment are analyzed, the theoretical derivation of digital beamforming technology is given, and the functions of digital beamforming algorithm implementation, the original data extraction, BIT information extraction, and data network transmission in software design are analyzed. Finally, the article gives a conclusion on the application effect.