摘要
在相位噪声理论模型的基础上,推导出反映相位噪声导致的相参积累损失因子和信噪比。结合单/双基地合成孔径雷达(SAR)的信号收发关系,给出了单/双基地条件下回波相位噪声的关系式,并以典型机载SAR参数进行相噪对聚焦性能的仿真分析。结果表明,相位噪声对双基地SAR的影响明显大于单基地。该分析方法也可应用于其他类型相参雷达的积累性能分析。
Based on the analysis of phase noise model, the expression of integration loss factor （ILF） which is denote to evaluate the effect of phase noise on coherent integration and signal noise ratio （SNR） are given. Using the character of phase noise, the phase noise model of the monostatic and bistatic radar are analyzed and discussed. The simulation experiments of typical airborne synthetic aperture radar （SAR） system have been carried out and the results verify that phase noise has more remarkable effect for bistatic SAR. The approach can be applied to performance analysis of other kind of coherent radar.
出处
《现代雷达》
CSCD
北大核心
2012年第5期5-7,13,共4页
Modern Radar
关键词
相位噪声
合成孔径雷达
相参积累
phase noise
synthetic aperture radar
coherent intergration
