雷达目标有限频率响应数据的结构窗函数约束外推

本文针对目标成像与目标识别这一应用背景，提出了一种以目标距离结构窗函数为约束的限带频率响应数据的外推方法，这种方法首先根据常规的ＦＦＴ分析，获取目标的距离结构先验信息，然后根据误差能量逐步减少原则，对外推数据进行迭代求解；为改善抗杂波性能，利用结构窗函数对信号进行了准匹配滤波处理。与常规外推法相比，它具有稳健性好、外推误差小、抗杂波性能好等优点，适用于在发射波形带宽不足的情况下，进行高分辨成像。

Data Extrapolation Based on Band-limitted Frequency Response by Using Range Structure Window Function Restriction

This paper presents a method of data extrapolation of band-limitted frequency re-sponse by using target range structure window function restriction for target imaging and target iden-tification application. In the method, priori knowledge about target range structure is firstly obtained by conventional FFT spectrum analysis,then a iterative algorithm based on range structure function is found by using error energy theory. Matching Filtering processing is also used in order to suppress clutter and noise. The method has the advantages of robstness under clutter and noise background and reduction of extrapolation errors, and can be used for high range resolution imaging under the condition of narrow-banded transmitted waveform.