摘要
推导了存I/Q通道相位误差的情况下的LFM脉冲压缩输出信号的表达式,定量分析了I/Q通道相位不一致性对LFM脉冲压缩性能的影响,为雷达接收机系统设计中I/Q通道相位误差的控制提供了理论的参考依据。理论分析和计算机仿真表明,在采用加窗方式抑制脉冲压缩输出旁瓣的情况下,I/Q通道的相位误差会脉冲压缩输出的主副比性能产生严重影响。
This paper presents an expression of pulse compressed Linear Frequency Modulation （LFM） signal with I/Q phase error. The influence of the error on the performance of LFM digital pulse compression is analyzed in detail, a theoretical reference for controlling I/Q phase error in radar receiver designing is provided. The theoretical analysis and the simulating result show that the I/Q phase error will badly influence on the ratio between mainlobe and sidelobe of LFM digital pulse compression with window function for restraining the sidelobe.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2007年第4期696-698,702,共4页
Journal of University of Electronic Science and Technology of China
关键词
I/Q通道
线性调频
相位
脉冲压缩
I/Q channel
linear frequency modulation
phase
pulse compression
