Estimation of the spatio-temporal evolution of a wave elevation field derived from the X-band radar image shown in the previous image. (from: Nieto Borge, J.C., Rodríguez, G., Hessner, K., and Izquierdo, P., 2004, “Inversion of marine radar images for surface wave analysis”. Jour. of Atmos. and Ocean. Technology. Vol. 21, No. 8, pp. 1291-1300).