论文标题
在At-Insar速度束模型中的海面径向速度成像。一种功能性方法
Ocean surface radial velocity imaging in the AT-INSAR Velocity Bunching Model. A functional approach
论文作者
论文摘要
这项工作涉及估计海面高程的径向速度。该数据是沿轨道干涉合成孔径雷达（AT-INSAR）图像嘈杂的嘈杂。我们假设速度束模型。该模型将图像平面点的复合物AT-INSAR图像与海面散射点的径向速度相关联。该关系是通过非线性积分操作员将径向速度映射到AT-INSAR图像中的。因此，径向速度的估计等同于非线性积分方程的解决方案。我们的建议是通过牛顿在功能空间上的方法来解决后者，然后优化然后离散化方法。我们表明，此连续版本是准确的，并且比经典离散化更快，然后优化版本。还与干涉速度进行了物理比较。
This work is concerned with the estimation of radial velocities of sea surface elevations. The data, is a noisy along-track interferometric synthetic aperture radar (AT-INSAR) image. We assume the Velocity Bunching Model. This model relates the complex AT-INSAR image at a point in the image plane, with the radial velocity of a scatterer point in the sea surface. The relation is by means of a nonlinear integral operator mapping radial velocities into AT-INSAR images. Consequently, the estimation of radial velocities, amounts to the solution of nonlinear integral equations. Our proposal is to solve the latter by Newton's methods on function spaces, the optimize then discretize approach. We show that this continuous version is accurate, and faster than the classical discretize then optimize version. Also a physical comparison is carried out with the interferometric velocities.
