Abstract:We discuss the downward continuation of the horizontal component in airborne vector gravimetry using input output system, and the east component is taken as an example for a simulation test. Under different noise levels, the continued results of single-input single-output systems and double-input single-output systems are compared. The results indicate that steady downward continuation of the high precision east component can be realized using both input methods, while that of the lower precision east component can only be achieved by double-input single-output system.