| 摘要: |
| 在太赫兹高分辨引信系统中，引信与目标的相对运动会引起高分辨距离像剧烈变形，从而严重影响目标的检测。针对太赫兹引信扩展目标检测问题，提出了一种基于波形对比度最优的扩展动目标恒虚警检测方法。该方法利用波形对比度最优准则来估计雷达与目标之间的相对运动速度，进而实现运动补偿和恒虚警率目标检测，从而显著提高了太赫兹引信的目标检测性能。该方法简单并且在低信噪比的情况下也能有很好的检测效果。仿真实验验证了所提方法的优点和有效性。 |
| 关键词: 太赫兹引信 高分辨距离像 恒虚警率检测 对比度最优 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（61302188，61372066） |
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| CFAR detection of moving range-spread target based on waveform contrast optimization |
| LI Zhao,LI Jiaqiang,WANG Haibin,CHEN Jinli |
| () |
| Abstract: |
| In a terahertz high resolution fuze system,relative motions between radar and target can induce high distortions of high-resolution range profiles. These distortions can lead to unacceptable performance deterioration in detection. To solve this problem,an algorithm for detecting moving range-spread targets based on waveform contrast is proposed. The proposed algorithm utilizes the waveform contrast optimization to estimate the relative velocity between radar and target,and then complete the motion compensation and the constant false alarm rate target detection. Therefore,the target detection performance of terahertz fuze can be improved significantly. It is simple and has a good detection effect even for low signal to noise ratio. Simulated experiments are carried out to verify the advantages and effectiveness of the proposed algorithm. |
| Key words: terahertz fuze high resolution range profile constant false alarm rate detection waveform contrast |
《电讯技术》编辑部 