1. A method for determining an actual position of a geodetic instrument comprising a global positioning system which is based on the reception of shadowable signals of the global positioning system and a dead range within which the propagation of the shadowable signals of the global positioning system are impaired in such a way that a direct determination of the actual position by means of the global positioning system is at least limited comprising the following acts: recording of a first piece of image information from a first known position determined by means of the global positioning system which is based on the reception of shadowable signals of the global positioning system and the dead range within which the propagation of the shadowable signals of the global positioning system are impaired in such a way that a direct determination of the actual position by means of the global positioning system is at least limited, the first piece of image information having at least two identifiable reference structures on a building which can be detected at least from a partial region of the dead range and measurement of at least one first distance from the first known position, the first distance being coordinated indirectly or directly with the said at least two identifiable reference structures on the building; recording of a second piece of image information from a second known position determined by means of the global positioning system, wherein the global positioning system includes a satellite-supported system, the second piece of image information having at least the said two identifiable reference structures on the building and measurement of at least one second distance from the second known position, the second distance being coordinated indirectly or directly with the said at least two identifiable reference structures on the building; recording of a piece of actual image information from the actual position, the actual image information having the said at least two identifiable reference structures on the building and measurement of at least one actual distance from the actual position, the actual distance being coordinated indirectly or directly with the said at least two identifiable reference structures on the building, wherein the recording of the first and second pieces of image information and the measurement of the first and second distances are carried out in an automated manner; and derivation of the actual position of the geodetic instrument by referencing relative to the said at least two identifiable reference structures on the building, wherein in the derivation of the actual position, a transformation is used which links the actual position via the said at least two identifiable reference structures on the building in the first and second image information to the first known position and the second known position, wherein the said at least two identifiable reference structures on the building are tracked and/or identified automatically.