Method for utilizing lasers to conduct satellite borne clock measurement

A method for utilizing lasers to conduct satellite borne clock measurement includes the steps that a ground observation station emits laser pulse signals with certain wavelengths and pulse widths to a satellite at a certain time by certain frequency, a satellite borne laser reflector reflects the laser pulse signals in the incident direction, the laser pulse signals are returned to the ground and received by a ground astronomical telescope which is large in aperture, the emitting and receiving moments of the laser pulse signals are recorded, and satellite-to-ground precise distance measurement and track determination are achieved through resolving; meanwhile, a satellite borne laser time difference measuring device receives the ground laser pulse signals in a same frequency or frequency doubling mode, the clock difference between the moment when the laser pulse signals are received and a satellite borne clock is recorded, then the recorded clock difference information is downloaded to the ground observation station through a certain channel in an navigation message or telemetry information mode, and the clock difference between the satellite borne clock and a reference clock of the ground observation station is measured through comprehensive resolving. According to the method, the change law of the satellite borne clock relative to the reference clock of the ground observation station is resolved, and the method has the advantages of being high in accuracy, small in system error and the like.