变抽样率处理技术及性能

提出了一种处理线性调频信号的方法，该方法可有效地从强地杂波中检测出目标信号，并应用于分辨多运动目标。文中对变抽样率处理技术的检测性能和多运动目标分辨能力进行了分析和仿真，认为影响其分辨能力的因素除了地杂波之外，主要是变抽样率处理后剩余多普勒频率所造成的旁瓣影响小目标的分辨。仿真结果表明该方法是可以在强地杂波中检测出目标信号，并分辨多运动目标的。

The Performance and Method of Changeable Sampling Ratios

An processing method of chirp signal is proposed . Using this method, the moving targets can be detected and the multiple moving targets can be distinguished form the strong ground-clutter effectively. Analysis and simulation for detecting performance and the multiple target resolution are also given. It is evident that not only the resolution is affected by ground-clutter, but also the distinguishing of small targets is influenced by the sidelobes of the residue Doppler frequency after the processing of changeable ratio sampling. Simulation results demonstrate that using the proposed method, target signals can be detected from strong ground-clutter and multiple targets can be distinguished effectively.