| 高分辨率雷达中带宽对信号检测影响的研究 |
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| 引用本文： | 王彩云,许小剑,毛士艺.高分辨率雷达中带宽对信号检测影响的研究[J].宇航学报,2006,27(5):915-919. |
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| 作者姓名： | 王彩云 许小剑 毛士艺 |
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| 作者单位： | 北京航空航天大学电子信息工程学院,北京,100083 |
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| 摘 要： | 利用单脉冲单元平均恒虚警（CA-CFAR）滑窗检测方法，对不同波段高分辨率雷达（VHF和l波段）的实测数据进行了目标检测仿真，并分析了雷达绝对带宽与相对带宽对信号检测的影响。结果表明，波段选择对信号检测影响较小，绝对带宽对信号检测影响较大。检测概率为90％时，带宽25MHz和200MHz的所需输入信噪比相差5dB。在能量一定的情况下，高分辨率雷达的检测性能优于低分辨率雷达。
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| 关 键 词： | 高分辨率雷达 带宽 信号检测 |
| 文章编号： | 1000-1328（2006）05-0915-05 |
| 收稿时间： | 05 15 2006 12:00AM |
| 修稿时间： | 2006-05-152006-07-20 |
The Impact of Bandwidth on Target Detection in High Resolution Radar |
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| WANG Cai-yun,XU Xiao-jian,MAO Shi-yi.The Impact of Bandwidth on Target Detection in High Resolution Radar[J].Journal of Astronautics,2006,27(5):915-919. |
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| Authors: | WANG Cai-yun XU Xiao-jian MAO Shi-yi |
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| Institution: | School of Electronic and hfformation Engineering, BeiHang University, Beijing 100083, China |
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| Abstract: | The detection performance with high resolution radar(HRR) is of great importance for target recognition and imaging.This work addresses the problem of target detection using different bands(VHF and L) with different bandwidths.Single-pulse and non-coherent integration methods are used.The impact of both frequency band and the waveform bandwidth on HRR target detection is analyzed.Simulation results demonstrate that the radar bandwidth performs much more important roles than the frequency band.With the detection probability of 90%,bandwidth 25MHz and bandwidth 200MHz comparing,and the required inputting signal-to-noise ratio(SNR) differs 5dB.It is also shown that,with equivalent total energy,detection performance of the HRR is superior to conventional LRR. |
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| Keywords: | High-resolution radar Bandwidth Radar signal detection |
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