Positioning system and terminal

The invention discloses a positioning system and a terminal. The positioning system comprises a cloud server and a terminal, the terminal comprises a software development kit (SDK) and a resolving module; the cloud server is configured to provide a high-precision product of a server; the SDK is set as follows: during initialization, a data type identifier is broadcasted to a cloud server according to a terminal positioning calculation model so as to subscribe global correction data of all areas; according to the initial position of the user, matching a grid ID of an area in a preset range; sending a data request to a cloud server to obtain atmosphere product information corresponding to the matched grid ID from the high-precision product; broadcasting the matched atmosphere product information to the user equipment; the resolving module is configured to calculate a user initial position of the user equipment and feed back the user initial position to the SDK; and carrying out positioning calculation according