一种超低副瓣非线性调频脉压信号的性能分析

Performance Analysis of an Ultra-Low Side Lobe Non-Linear Frequency Modulation Signal for Pulse Compression

根据非线性调频函数的调频曲线,拟合出一种新的调频函数曲线,使该函数在定义域内的值及其一、二阶导数与调频S曲线高度一致。据此提出调频函数的假设数学模型,将线性调频信号与非线性调频信号统一起来。采用Matlab软件对该模型的脉压过程进行了仿真,同时对基于该函数的脉压性能进行了分析和讨论。最后,简单介绍了这种信号在空管雷达领域的应用。

In this paper, we present a new frequency modulation function on the basis of features of traditional non-linear frequency modulation signal. This function is in accordance with S-type curves in function values, first derivative and second derivative. This model function unifies linear and non-linear frequency modulations. Next, this paper gives the processing algorithm and simulation results using a typical S-band air traffic control radar as an example. In the end, this paper discusses the application of the model function to the air traffic control radar.