학술논문
Non parametric methods for multidimensional wavefront estimation
Document Type
Conference
Author
Source
IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120) Geoscience and remote sensing Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International. 2:705-707 vol.2 2000
Subject
Language
Abstract
In active remote sensing applications the time of delay (or phase) of backscattered wavefield recorded by arrays of sensors is useful to get information about the target and/or the propagating medium. The authors propose two methods for non-parametric estimation of the time of delay (or phase) function. Both methods are suitable for the wavefront estimation when the arrangement of sources and receivers are rather complex and non-regularly spaced. In addition, the estimate is carried out simultaneously on the (n+1)-dimensional the space of measurements (n/spl ges/1) thus avoiding the extraction of lower dimensional subsets. Examples from SAR interferometry and reflection seismology demonstrate the potentialities of the methods.