A Verification Method for The Correctness of Individual Format of Navigation Data Based on Self-checking

Aiming at the need of evaluating the correctness of navigation data in non-general format when navigation equipment is upgraded and updated, a correctness checking method is proposed to overcome the problem of relying on spacecraft data and lack of flexibility in the original technology. The method uses the observation error equation of each satellite in the navigation and positioning calculation to determine whether the equipment data is consistent, so as to quickly verify the correctness of the data interface. The example indicates the effectiveness of the method. Compared with previous technologies, the new method can realize data structure transformation and parameter mapping customization, simultaneously process data from different sources and interfaces, and judge the self-consistency of all data of shipboard navigation equipment. In the past three years, this method has been applied in the upgrade, modification and replacement of shipboard navigation equipment, and many data interface problems have been found.