PANORAMIC RADAR METHOD OF DETERMINING PARAMETERS OF STATE OF OCEAN SURFACE LAYER FROM SATELLITE

摘要

FIELD: physics.;SUBSTANCE: knife-edge beam of the antenna is rocked relative the vertical in a direction perpendicular to the direction of motion and each probe pulse is used to illuminate a 14x355 km spot on the water surface (at altitude of 800 km). Reflected pulses are received using time gating on the range based on the Doppler shift sign to select in said 14x355 km spot elementary scattering cells (ESC) measuring, for example, 14x14 km. Using a synthesis procedure along the direction of motion of the satellite, the backscattering section is determined and the water surface slope dispersion in each ESC is reconstructed. Further, by selecting the azimuth angle, the water surface slope dispersion along said direction is reconstructed and, by analysing the azimuth dependency of slope dispersion in each ESC, the direction of wave propagation in each cell is determined. The speed of surface wind V in each ESC is determined using an algorithm obtained using a regression method. In a special case of the method, average values of the rough sea and wavelength of a big wave are also determined.;EFFECT: high accuracy of determining parameters of the state of the ocean surface layer.;2 cl, 2 dwg