摘要
在振幅和差单脉冲体制对目标进行角度测量的条件下,讨论了采用宽带信号的和差波束接收通道的幅相特性不一致。当幅度误差<14 dB、相位误差<0.27 rad的通道误差模型时,针对宽带信号提出了一种对和差通道幅相进行校正的算法。通过计算机仿真表明,校正后的测角精度有明显提高,满足了系统设计的要求。
This paper discusses the inconsistency between the sum and difference channels, which will affect angle measurement if the amplitude-monopulse angle measurement technique is employed. When wide band signal is in use, the channel amplitude and phase property cannot be treated as constants, which, in fact, are variables to frequency. The amplitude and phase imbalances of monopulse sum and different channels are analyzed based on a mathematical model in which amplitude imbalance <14 dB and phase imbalance <0.27 rad. A method of calibrating amplitude and phase imbalances between the two channels is introduced along with the computer simulation results. The results prove that after calibration, the angle measurement抯 precision is within the system requirement.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2003年第1期5-9,共5页
Journal of University of Electronic Science and Technology of China
基金
总装备部十五预研基金资助项目
