Method for the automatic three-dimensional geolocation of SAR targets and simultaneous estimation of tropospheric propagation delays using two long-aperture SAR images each providing a resolution below two meters, comprising a) two SAR acquisitions with long aperture acquired with different geometry providing as input to the method, b) point target detection in both images, c) providing a defocus analysis for all point targets in both images, wherein for each point target a relationship between an estimated height and a tropospheric delay is established, d) one of two images is selected as master image and the other as slave, e) then, for every point target of the master image the following sub-steps are performed: e1) the point target is mapped onto the slave image taking into account its height estimation from step c) at a reference zenith path delay and its range and azimuth position, e2) a search looking for candidates in the slave image which may refer to the mapped point target from the master image and identifying the position of a candidate in the slave image, wherein more than one candidate may be found, and e3) thereafter, for each candidate an equation system composed of four equations is solved, wherein two equations are related to the range and azimuth differences ΔR g and ΔA z between the position of the point target mapped from the master image and the position of a found candidate in the slave image and wherein the other two equations refer to the relation established in step c) between height and tropospheric delay for the mapped point targets of the master image and a found candidate of slave image, and f) statistical estimations of the tropospheric delay are performed to identify for all point targets the most likely candidates to be associated to the respective mapped point targets of master image. a) two SAR acquisitions with long aperture acquired with different geometry providing as input to the method, b) point target detection in both images, c) providing a defocus analysis for all point targets in both images, wherein for each point target a relationship between an estimated height and a tropospheric delay is established, d) one of two images is selected as master image and the other as slave, e) then, for every point target of the master image the following sub-steps are performed: e1) the point target is mapped onto the slave image taking into account its height estimation from step c) at a reference zenith path delay and its range and azimuth position, e2) a search looking for candidates in the slave image which may refer to the mapped point target from the master image and identifying the position of a candidate in the slave image, wherein more than one candidate may be found, and e3) thereafter, for each candidate an equation system composed of four equations is solved, wherein two equations are related to the range and azimuth differences ΔR g and ΔA z between the position of the point target mapped from the master image and the position of a found candidate in the slave image and wherein the other two equations refer to the relation established in step c) between height and tropospheric delay for the mapped point targets of the master image and a found candidate of slave image, and e1) the point target is mapped onto the slave image taking into account its height estimation from step c) at a reference zenith path delay and its range and azimuth position, e2) a search looking for candidates in the slave image which may refer to the mapped point target from the master image and identifying the position of a candidate in the slave image, wherein more than one candidate may be found, and e3) thereafter, for each candidate an equation system composed of four equations is solved, wherein two equations are related to the range and azimuth differences ΔR g and ΔA z between the position of the point target mapped from the master image and the position of a found candidate in the slave image and wherein the other two equations refer to the relation established in step c) between height and tropospheric delay for the mapped point targets of the master image and a found candidate of slave image, and f) statistical estimations of the tropospheric delay are performed to identify for all point targets the most likely candidates to be associated to the respective mapped point targets of master image.