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发明授权
CN106019249B 一种基于三角级数拟合的通道均衡滤波器设计方法 有权

一种基于三角级数拟合的通道均衡滤波器设计方法
摘要：
本发明涉及一种基于三角级数拟合的通道均衡滤波器设计方法，通过对各单元特显点回波数据采集，在频域与基准理想线性调频信号频谱相除，然后填充频谱边缘，再通过三角级数拟合获得均衡滤波器的频谱特性，然后经过IFFT获得均衡滤波器的时域单位冲击响应。相对于传统频域均衡方法，此方法能够有效降低频谱边缘的起伏，使得均衡滤波器逼近理想幅相特性，大大提高宽带数字阵列雷达空域及时域性能。
摘要（英）：

The invention relates to a channel equalization filter designing method based on trigonometric series fitting. The method includes the steps of acquiring salient point echo data of each unit, dividing a frequency domain by a referential ideal chirp signal frequency spectrum, filling the frequency spectrum edge, obtaining the frequency spectrum characteristics of an equalization filter through trigonometric series fitting, and obtaining time domain unit impact response of the equalization filter through IFFT. Compared with a conventional frequency domain equalization method, the method effectively minimizes fluctuating of the frequency spectrum edge, to allow the equalization filter approach to ideal amplitude phase characteristics. The broadband digital array radar spatial domain and time domain performance are substantially improved.

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