Measurements of Directional Wave Spectra by the Shuttle Synthetic Aperture Radar
نویسنده
چکیده
During October 1984, measurements of directional ocean wave spectra in high sea states were made off the coast of Chile, near Tierra del Fuego, by a synthetic aperture radar aboard the space shuttle Challenger. Simultaneously, independent measurements of ocean wave spectra were made by a complement of airborne instruments. The results indicate that a low-altitude orbiting synthetic aperture radar would be a valuable supplement to existing operational wave forecasting models.
منابع مشابه
Simultaneous Observations of Ocean Surface Winds and Waves by Geosat Radar Altimeter and Airborne Synthetic Aperture Radar During the 1988 Norwegian Continental Shelf Experiment
Quasi-simultaneous measurements of the ocean surface by the Canada Centre for Remote Sensing (CCRS) Convair-580 (CV-580) synthetic aperture radar (SAR) were acquired on March 20, 1988, along an ascending pass of the Geosat radar altimeter as part of the prelaunch ERS-1 Norwegian Continental Shelf Experiment (NORCSEX '88). Over a region where the SAR look direction is parallel to the wind vector...
متن کاملOn the Retrieval of Significant Wave Heights from Spaceborne Synthetic Aperture Radar (ERS-SAR) using the Max-Planck Institut (MPI) Algorithm
Synthetic Aperture Radar (SAR) onboard satellites is the only source of directional wave spectra with continuous and global coverage. Millions of SAR Wave Mode (SWM) imagettes have been acquired since the launch in the early 1990’s of the first European Remote Sensing Satellite ERS-1 and its successors ERS-2 and ENVISAT, which has opened up many possibilities specially for wave data assimilatio...
متن کاملThe Sar Measurement of Ocean Waves: Wave Session Whitepaper
Remote sensing techniques enable the measurement of ocean wave fields with both high resolution and large coverage. As the acquisition of active radar data is independent of daylight and cloud conditions, these data are therefore believed to be most suited for operational use at weather centers and governmental agencies, as well as for many ongoing scientific investigations. In the present over...
متن کاملA nonlinear mapping from dual−polarization SAR image spectra to Ocean wave spectra
It is well known that ocean waves are an important component of upper ocean dynamics. The synthetic aperture radar (SAR) has been widely used to measure ocean surface wave spectra from space since the Seasat satellite was launched in 1978. Many papers have been published dealing with the imaging mechanism and retrieval methodology. Schuler and Lee proposed a method to improve the measurement of...
متن کاملMeasurement of wave crest length and groupiness from spaceborne Synthetic Aperture Radar
Most measurements of ocean surface wave variations are made in the temporal domain, i.e wave height or slope as a function of time. By contrast, a synthetic aperture radar (SAR) is capable of measuring waves in the twodimensional spatial domain at essentially a single instant. As a consequence, SAR imagery affords us a unique opportunity to examine some of the non-linear features of ocean surfa...
متن کامل