中文摘要：

时间同步技术是双基地SAR系统的关键技术之一.结合一站固定式低频超宽带双站SAR系统的工作特点,研究了其时间同步误差产生机理.在考虑了不同形式时间同步误差分量的基础上,分别建立了时间同步误差模型,从理论上推导分析了时间同步误差对一站固定式低频超宽带双站SAR成像质量的影响,并给出了量化的同步指标.最后通过仿真验证了理论分析的准确性.工作结果对于一站固定式低频超宽带双站SAR系统设计及同步方法的工程实践提供有力支撑.

英文摘要：

Time synchronization is one of key technologies for Bistatic SAR.Combining with the performance characteristic of one stationary low frequency UWB BiSAR,the mechanism of time synchronization error is studied based on the existing results.Then,the time error model is established with a consideration of the error components in various forms.Furthermore,we derive the expressions for the impact of time synchronization error and give the quantitative indicators in one stationary low frequency UWB BiSAR system.Finally,the simulation results are provided to illustrate the validity of the theoretical analysis.The con clusion offers powerful support for the engineering realization of one stationary low frequency UWB BiSAR system and the time synchronization subsystem.