An information processing device comprising: - a reinforcement information adjustment unit which is adapted to reduce an amount of information in reinforcement information that is updated in a predetermined update cycle, includes a plurality of error values, and is used to correct a satellite positioning error; and - a reinforcement information output unit which is adapted to output, to a wireless network, the reinforcement information after being reduced in the amount of information by the reinforcement information adjustment unit, wherein the reinforcement information adjustment unit is adapted to reduce the amount of information in the reinforcement information by combining: - update cycle adjustment processing to set an update cycle of the reinforcement information to be an integer multiple being twice or more of the predetermined update cycle; - geographic interval error value adjustment processing to reduce the number of geographic interval error values by selecting from among a plurality of the geographic interval error values each of which is an error at every predetermined geographic interval in a plurality of grid points, out of the plurality of error values, a geographic interval error value at every geographic interval that is an integer multiple being twice or more of the predetermined geographic interval in each of a latitude direction and a longitude direction; and - bit count adjustment processing to reduce a bit count of the error value, for each error value relevant to a carrier wave, starting from a least significant bit, such that a bit count after reduction is smaller than a bit count before the reduction, characterized in that the reinforcement information adjustment unit is adapted to reduce the amount of information in the reinforcement information with which a positioning error on the order of centimeters is realized to convert the information into reinforcement information with which a positioning error on the order of decimeters is realized. - a reinforcement information adjustment unit which is adapted to reduce an amount of information in reinforcement information that is updated in a predetermined update cycle, includes a plurality of error values, and is used to correct a satellite positioning error; and - a reinforcement information output unit which is adapted to output, to a wireless network, the reinforcement information after being reduced in the amount of information by the reinforcement information adjustment unit, - update cycle adjustment processing to set an update cycle of the reinforcement information to be an integer multiple being twice or more of the predetermined update cycle; - geographic interval error value adjustment processing to reduce the number of geographic interval error values by selecting from among a plurality of the geographic interval error values each of which is an error at every predetermined geographic interval in a plurality of grid points, out of the plurality of error values, a geographic interval error value at every geographic interval that is an integer multiple being twice or more of the predetermined geographic interval in each of a latitude direction and a longitude direction; and - bit count adjustment processing to reduce a bit count of the error value, for each error value relevant to a carrier wave, starting from a least significant bit, such that a bit count after reduction is smaller than a bit count before the reduction,