中文摘要：

使用现代雷达信号处理系统中广泛应用的数字脉冲压缩技术，在FPGA硬件平台上设计实现了电离层数字测高仪接收机模块中用于对13位巴克码进行解码的相关运算电路，解决了电离层数字测高仪中目标作用距离与距离分辨率之间的矛盾．实验结果表明：基于FPGA的相关运算电路处理速度快，精度高，实时性好，完全满足电离层数字测高仪对解码电路的性能指标和技术要求．

英文摘要：

By using pulse compression technology, which is widely used in signal processing of modern radar system, a correlation arithmetic circuit is designed for decoding 13-bit Barker code in receiver part of ionospheric digital ionosondes based on FPGA platform,which resolves the contradiction between the object＇s action range and range resolution in digital ionosondes. The experimental results show that the correlation arithmetic circuit based on FPGA has features of high processing speed, high precision and better real-time characteristics. This fully meets the demand of performance and technique specifications for digital ionosondes.