On Parsing of NMEA0183 Protocol

The module,parsing NMEA0183 protocol,is a critical part in the guiding system software.The robusticity and efficiency of the module affect the performance of the guiding system directly.The deep analysis of the NMEA0183 protocol structure and the compilation technology characteristic leads to the method for parsing NMEA0183 protocol using the compilation technology.The whole process is composed of four phases:lexical analysis,syntax analysis,semantic analysis and code generation.Now,the method has been used in the GPS guiding system product.The corresponding module works stably in practice,and meets the request of the product level.