A method for positioning a moving target on a radar image representing the reflectivity echoes of an area illuminated by a radar beam, said radar being installed on a moving carrier, said method comprising at least the following steps: - a first step of acquisition of two radar images simultaneously, one radar image representing the reflectivity level and the phase of the reflectors positioned in the illuminated area as a function of their distance relative to the reception paths and their Doppler frequency, the first and the second radar images being acquired respectively on a first and a second azimuth reception path of the radar, - a second step of calculation, executed on the basis of the first and the second radar images, of a mapping table correlating, for a given distance, a measurement of a phase difference between the two reception paths with a position on said radar images, - a third step of supplying a moving target present in the first and second radar images and defined at least by its distance relative to the reception paths and its Doppler frequency, - a fourth step of calculation, executed on the basis of the first and the second radar images, for the moving target, of the phase difference between the first and the second radar images and of the distance relative to the reception paths, - a fifth step of positioning the moving target on the radar image on the position of the pixel defined, in the mapping table, by the same phase difference and the same reflector distance as said moving target, characterized in that the calculation second step comprises the following substeps: - calculation of a first image representing a phase difference measured between the first and second reception paths as a function of the distance and Doppler data of the reflectors, - calculation of a second image representing a theoretical phase difference from the acquisition geometry and from the characteristics of the reception paths, - calculation of a third image representing the residual phase difference error between said first image and said second image, - parametric estimation of the residual phase difference error, by rephrasing of the echoes of the reflectors on this third image. - a first step of acquisition of two radar images simultaneously, one radar image representing the reflectivity level and the phase of the reflectors positioned in the illuminated area as a function of their distance relative to the reception paths and their Doppler frequency, the first and the second radar images being acquired respectively on a first and a second azimuth reception path of the radar, - a second step of calculation, executed on the basis of the first and the second radar images, of a mapping table correlating, for a given distance, a measurement of a phase difference between the two reception paths with a position on said radar images, - a third step of supplying a moving target present in the first and second radar images and defined at least by its distance relative to the reception paths and its Doppler frequency, - a fourth step of calculation, executed on the basis of the first and the second radar images, for the moving target, of the phase difference between the first and the second radar images and of the distance relative to the reception paths, - a fifth step of positioning the moving target on the radar image on the position of the pixel defined, in the mapping table, by the same phase difference and the same reflector distance as said moving target, - calculation of a first image representing a phase difference measured between the first and second reception paths as a function of the distance and Doppler data of the reflectors, - calculation of a second image representing a theoretical phase difference from the acquisition geometry and from the characteristics of the reception paths, - calculation of a third image representing the residual phase difference error between said first image and said second image, - parametric estimation of the residual phase difference error, by rephrasing of the echoes of the reflectors on this third image.