Research on navigation data rule checking system based on ARINC424 specification

Airborne navigation data has an important impact on flight safety. In the ARINC424 specification, there are many constraints on navigation data record fields. The constraint rules in the ARINC424 specification also change from version to version. However, the traditional navigation data rule checking combines the business logic of rule checking with the production logic of navigation data, which makes the development and maintenance of navigation data production tools extremely difficult. Therefore, this paper researches navigation data rule checking system based on ARINC424 specification. The system is based on the rule engine, and adopts the rule definition mode of separating business from program to realize the rule constraint check of massive and complex navigation data, so as to ensure the quality of navigation data.