On SAR focusing of ocean waves

The effect of the focus setting on the image of a long ocean wave propagating (in an arbitrary direction)with its phase speed, and the effect on the (stationary) SAR impulse, response is examined. The analysisis carried out in the two limiting cases of vanishingly small resolutionor correlation length. The exact solution is obtained for an idealized periodic reflectivity pattern, thus obtaining quantitative statements on the focus effect in relation to system and ocean parameters.