摘要
对于宽带数字阵列雷达,可以利用通道均衡技术减小通道内部的幅相起伏和通道之间幅相不一致所带来的性能恶化,然而常规的方法对噪声的影响较为敏感。本文首先提出了一种宽带通道频率响应特性测试的有效方法;其次讨论了标准通道选择方法和均衡滤波器特性提取方法,进而提出了一种改进的基于傅立叶变换法的均衡滤波器系数设计方法;最后提出了噪声条件下通道均衡效果评估方法。通过对均衡结果的分析,验证了本文方法的有效性。
As to the wideband digital array radar （ DAR）, the fluctuation of amplitude and phase in channel and the inconsistency among channels can be reduced by channel equalization, whereas the normal method is too sensitive to noise. Firstly, it puts forward an effective testing method for frequency response characteristics of wideband channel. Then the methods of choosing standard channel and feature-extracting of equalization filter are discussed. Then it brings forward an improved designing method for coefficients of equalization filter based on Fourier Transform. Finally an evaluating method for channel equalization effect in noise conditions is brought forwards. The effectiveness of above methods is validated through analyzing of equalization result.
出处
《信号处理》
CSCD
北大核心
2010年第3期453-457,共5页
Journal of Signal Processing
