欧米茄-K光束成型:替代配方的实际影响
Timothy M Marston1, Daniel S Plotnick2
1The Applied Physics Laboratory, University of Washington, Seattle, Washington 98105, USA.
JASA express letters
|July 21, 2023
概括
这就是Omega-K算法.
科学领域:
- 信号处理 信号处理
- 声学成像 声学成像
- 合成孔径雷达 (SAR) 和声纳 (SAS) 的使用
背景情况:
- 欧米茄-K算法是SAR和SAS图像的一个标准.
- 存在两种Omega-K光束成形形式,它们在匹配过和Stolt映射顺序上有所不同.
- 标准方法是在Stolt映射之前应用匹配过.
研究的目的:
- 为了研究Omega-K光束成型中匹配过顺序的影响.
- 为了识别由Omega-K标准配方引起的潜在文物.
- 提出一种替代的Omega-K配方,以减轻这些工件.
主要方法:
- 两个Omega-K算法配方的比较分析.
- 使用标准和替代方法进行模拟和/或实验数据处理.
- 对大光圈角度的图像质量和文物存在的评估.
主要成果:
- 标准的Omega-K方法 (在Stolt绘制之前匹配过器) 可以称声能.
- 这种别名对宽光圈角度特别有问题,引入图像工件.
- 替代配方 (匹配过器之前的Stolt映射) 成功避免了这些工件.
结论:
- 在Omega-K光束成型中的操作顺序显著影响图像质量.
- 在Stolt映射之后应用匹配过是一种优越的方法来减少文物.
- 这一发现有助于改进SAR和SAS图像.
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