Performance analysis and error budget for gravity-measuring satellite

The aim of the gravity-measuring satellite, like GOCE, is to provide accurate model of the Earth´s gravity field and of the geoid with high accuracy and spatial resolution. To achieve this goal, it is necessary to provide the classification of the error sources affecting the gravity field measurements and allocate performance requirements to the identified errors, which is an important task during all design phases and even beyond. The detailed study of the errors affecting the gravity-measuring satellite is complex, however a complete scheme of error analysis and allocation has been developed in this paper. Moreover, a simulation platform is designed based on simulink, which is served as the test bed for the performance analysis and error budget method of gradiometric satellites, providing good interaction and extensibility. Overall, the numerical simulation results, based on the well-established platform, clearly establish that error budget on the GGT trace is compliant with the specified requirements. It is illustrated sufficiently that the established platform is helpful for performance analysis and error budget of gravity-measuring satellite.