Foundation navigation system time hopping signal matching method, system, equipment and terminal

• Main Author: TU HUIBIN
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING; TRANSMISSION

The invention belongs to the technical field of wireless signal detection, and discloses a ground-based navigation system time-hopping signal matching method, system, device and terminal, a time-hopping pattern of a to-be-detected pseudo satellite signal is pre-stored, and a to-be-matched sub-pattern sample is collected; and calculating a jump time slot distance between each element of the sub-pattern and the reference time slot element, and performing sliding matching on the sub-pattern and the element of the target pattern. The ground-based navigation system time-hopping signal matching method can adapt to missed alarm and false alarm conditions in the signal detection process, current matching search is not affected when individual missed alarm or even limited continuous missed alarm occurs, and the false alarm can be effectively recognized by the algorithm when the false alarm occurs. According to the method, a strategy of partial matching and jump time slot distance packet search is adopted, so that the