A geodesic measurement system having a geodesic measurement device - more particularly a theodolite or total station - and a plurality of target objects, which form a target object set, wherein each of the target objects is respectively assigned a unique identification code such that the target objects can be differentiated from one another on the basis of the identification code and wherein • the measurement device has ∘ distance and angle measuring functionality for determining the position of the target objects and ∘ at least one radiation source for emitting an optical beam in a defined spatial direction, more particularly a pivotable, vertically fanned-out laser beam, and • one of the target objects is embodied as a target unit and has ∘ a reflector and ∘ detector for receiving the beam, characterized in that • the measurement device is designed for emitting the beam in such a way that the identification code of a sought target object from the target object set can be modulated as a code (sID) to be sought on the beam, • the target object has ∘ an evaluation component connected to the detector and serving for checking a correspondence between the code (sID) modulated on the beam and the dedicated identification code of the target unit, and ∘ a transmitting component for the communication - effected upon correspondence - of a reactive confirmation signal to the geodesic measurement device, and in that • the measurement device has a processing component, which is designed for identifying the target unit from the target object set on the basis of the reactive confirmation signal, more particularly depending on a point in time of reception of the reactive confirmation signal. • the measurement device has ∘ distance and angle measuring functionality for determining the position of the target objects and ∘ at least one radiation source for emitting an optical beam in a defined spatial direction, more particularly a pivotable, vertically fanned-out laser beam, and ∘ distance and angle measuring functionality for determining the position of the target objects and ∘ at least one radiation source for emitting an optical beam in a defined spatial direction, more particularly a pivotable, vertically fanned-out laser beam, and • one of the target objects is embodied as a target unit and has ∘ a reflector and ∘ detector for receiving the beam, characterized in that ∘ a reflector and ∘ detector for receiving the beam, • the measurement device is designed for emitting the beam in such a way that the identification code of a sought target object from the target object set can be modulated as a code (sID) to be sought on the beam, • the target object has ∘ an evaluation component connected to the detector and serving for checking a correspondence between the code (sID) modulated on the beam and the dedicated identification code of the target unit, and ∘ a transmitting component for the communication - effected upon correspondence - of a reactive confirmation signal to the geodesic measurement device, and in that ∘ an evaluation component connected to the detector and serving for checking a correspondence between the code (sID) modulated on the beam and the dedicated identification code of the target unit, and ∘ a transmitting component for the communication - effected upon correspondence - of a reactive confirmation signal to the geodesic measurement device, and in that • the measurement device has a processing component, which is designed for identifying the target unit from the target object set on the basis of the reactive confirmation signal, more particularly depending on a point in time of reception of the reactive confirmation signal.