| 雷达距离超分辨降噪技术及残留噪声统计特性分析 |
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| 引用本文： | 刘晟,向敬成.雷达距离超分辨降噪技术及残留噪声统计特性分析[J].系统工程与电子技术,1998(9). |
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| 作者姓名： | 刘晟 向敬成 |
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| 作者单位： | 电子科技大学电子工程学院 |
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| 摘 要： | 基于高分辨阵列处理算法估计雷达目标回波时延较常规的模糊图技术可获得增强的距离分辨力。本文对我们最近提出的一种针对线性／非线性调频（ＬＦＭ／ＮＬＦＭ）雷达脉压的降噪算法及残留噪声的统计特性进行了分析，并在此基础上提出了有效的距离超分辨处理方法。计算机模拟验证了分析的正确性并表明这一降噪预处理技术可大大降低雷达距离超分辨处理的ＳＮＲ门限。
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| 关 键 词： | 雷达目标，图像分析，信号分析，噪声控制 |
Denoising Technique on Radar Range Super Resolution and Statistical Analysis of Its Residual Noise |
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| Abstract: | An efficient denoising algorithm for LFM/NLFM signals is presented with large time bandwidth product (TB), which can greatly lower the SNR threshold for radar super resolution in range domain statistical characteristic of the residual noise is mainly investigated and a novel method is suggested to achieve the range super resolution estimation at low SNR. Monte Carlo experiments prove the conclusion, and further illustrate the improved performance achieved by the proposed method. |
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