...
首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >Surface-Wavefield Estimation From Coherent Marine Radars
【24h】

Surface-Wavefield Estimation From Coherent Marine Radars

机译:相干船用雷达的表面波场估计

获取原文
获取原文并翻译 | 示例
           

摘要

One major impediment to using marine radars for real-time shipboard measurements of evolving ocean wavefields is the uncertainty in the transfer function that relates the radar cross section to sea-surface height. In this letter, a more direct approach is proposed to infer nonlinear sea-surface heights by using radial-velocity measurements from coherent marine radars. The radial velocities are initially integrated along range lines to obtain a scalar potential function. The velocity potential field is then differentiated with respect to time to yield the sea-surface height. Numerical simulations have been conducted to evaluate the sensitivity of the proposed scheme to sampling errors and noise. Under idealized conditions, the results demonstrate that the sea-surface elevation can be reliably estimated from the radial-velocity field provided that the antenna-rotation period is much smaller than a characteristic wave period.
机译:使用海洋雷达进行不断变化的海洋波场实时舰船测量的一个主要障碍是传递函数的不确定性,该函数将雷达横截面与海面高度相关联。在这封信中,提出了一种更直接的方法,即通过使用相干海洋雷达的径向速度测量来推断非线性海面高度。最初沿范围线对径向速度进行积分以获得标量势函数。然后将速度势场相对于时间进行微分,以得出海面高度。已经进行了数值模拟以评估所提出的方案对采样误差和噪声的敏感性。在理想条件下,结果表明,只要天线旋转周期比特征波周期小得多,就可以从径向速度场可靠地估算出海面高度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号