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, <EOS>