Satellite positioning coordinate confidentiality conversion method and system

• Main Author: PAN GUOFU
• Format: Patent
• Language: English
• Published: 21.01.2015
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses a satellite positioning coordinate confidentiality conversion method and system. The method includes the step of obtaining position information uploaded by a user terminal, wherein the position information comprises position coordinates and user identification codes, the step of querying and obtaining practical conversion parameters from a database according to the user identification codes and obtaining terminal pseudo-conversion parameters corresponding to the user identification codes, the step of converting the terminal pseudo-conversion parameters and the practical conversion parameters into second pseudo-conversion parameters through a preset conversion model and carrying out coordinate conversion on the position coordinates by using the second pseudo-conversion parameters to generate virtual coordinates, and the step of sending the virtual coordinates and the terminal pseudo-conversion parameters to the user terminal for coordinate conversion so that local coordinates can be obtained. The practical conversion parameters are not involved in the coordinate conversion process, even if the practical conversion parameters are illegally captured and decoded, only the terminal pseudo-conversion parameters, rather than the practical conversion parameters, can be obtained, the practical conversion parameters are prevented from being illegally captured, and security and confidentiality of the practical conversion parameters are guaranteed.