A COLLECTING METHOD AND SYSTEM OF GPS COMPLEMENTARY NAVIGATION MESSAGE

摘要

The present invention relates to a method for effectively collecting a complementary GPS navigation message and to a collecting system which supplies the GPS complementary navigation message collected using the same to a joint direct attack munition. The method for collecting a GPS complementary navigation message according to an embodiment of the present invention comprises: a page identification step of identifying a page with a satellite information identifier transmitted from a GPS satellite; a page checking step of checking whether the page identified in the page identification step corresponds to a required page; a week day number checking step of checking whether the information generation time of the checked page matches a week day number; a list changing step of changing information about the GPS satellite in a valid satellite list based on a checking result of the week day number checking step; a valid satellite determination step of determining whether the GPS satellite is included in the valid satellite list; a data maintaining step of maintaining page data for a valid satellite determined in the valid satellite determination step; a data determination step of determining whether the page data of the valid satellite includes data for all the required pages; and a data storage step of storing the page data for the valid satellite determined in the data determination step.