| 摘要: |
| 海尖峰是一种离散、高幅值、极化特性强、类似小目标的海杂波，对高分辨率雷达探测海面小目标会造成严重影响。围绕海尖峰的判别介绍Posner判别准则，讨论幅度阈值、最小间隔时间、最小持续时间这3个参数的不同取值方法以及优缺点，找出Posner判别准则存在的问题并进行分析；然后在海尖峰Posner判别准则的基础上，提出采用滑窗脉冲积累的方法改进该判别准则；最后对改进前后的两种Posner判别准则的处理结果进行对比，验证了改进后的海尖峰判别准则使得海尖峰判别更加准确，减少了“毛刺”的出现，提高了海尖峰的判别精度。 |
| 关键词: 海尖峰 Posner判别准则 脉冲积累 幅度阈值 |
| DOI：10.3969/j.issn.1672-2337.2018.05.014 |
| 分类号:TN957.51 |
| 基金项目: |
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| A New Method Based on Posner Identification Criterion for Sea Spikes |
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CHEN Zeming
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CEC Jinjiang Info Industrial Corporation, Ltd, Chengdu 610051, China
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| Abstract: |
| Sea spike is such a kind of sea clutter that is characterized by discrete distribution, high amplitude, strong polarization feature, and similarity to small target. It has severe influences on the sea small target detection of high resolution radar. Based on the introduction to the Posner identification criterion for sea spikes, the different value methods of amplitude threshold, minimum interval time, and minimum duration and their advantages and disadvantages are discussed. The problems of the Posner identification criterion are found out and analyzed. Then, the slide window impulse integration method is used to improve the identification criterion. Finally, a comparison between the new Posner identification criterion and the old Posner identification criterion is made. The result shows that the improved sea spikes identification criterion has higher identification accuracy and reduces the appearance of burrs. |
| Key words: sea spike Posner identification criterion pulse integration amplitude threshold |
