[关键词]
[摘要]
研制了一种基于DDC芯片的直接中频数字化雷达正交接收机 ,分析了I/Q通道的增益误差和正交误差对解调输出信号的影响。结果表明 ,设计的接收机通道间误差对解调输出的影响完全可以忽略。最后对接收机性能进行了测试 ,得到了理想的解调结果。
[Key word]
[Abstract]
An IF signal direct sampling radar quadrature demodulation receiver based on DDC chip is developed. The effect of the gain and phase errors between I and Q channel on demodulation output is investigated, and the results indicate that the effect of the gain and phase errors can be entirely ignored in the system. Finally the performance of the receiver is tested, and the demodulation output is found perfect. [
[中图分类号]
TN911 TN957
[基金项目]
国家 8 63基金资助项目 ( 2 0 0 2AA73 113 0 )
