【摘要】 根据多频高频地波雷达接收机的指标要求,基于软件无线电思想设计了一种新颖的模拟前端系统方案.从理论上计算了模拟前端的噪声系数、灵敏度、增益等性能参数,结果表明这些参数达到了指标要求,说明该设计方案是切实可行的,在海洋监测中具有很好的应用前景.更多还原

【Abstract】 A novel analog front-end scheme is presented based on the performance index of the multi-frequency HF ground wave radar receiver and the idea on software defined radio.Noise figure,sensitivity,gain are calculated theoretically,the results show that the parameters match the requirements of the performance index.The scheme is practical and has the good prospect of the applications in marine monitoring.更多还原