Patent ID: 8527234

Claim:
A locating method for a mobile device with an initial speed, the locating method comprising the following steps of: enabling a storage unit to store the initial speed as initial speed information; enabling a sensing unit to sense acceleration information and height displacement information, wherein the height displacement information is sensed by an altimeter of the sensing unit; enabling a low-pass filter (LPF) to adjust the height displacement information to reduce abrupt variations in atmospheric pressure within a short time; enabling a calculation unit to calculate temporary displacement information according to the initial speed information, the acceleration information and a predetermined time interval; enabling the calculation unit to calculate angle information according to the temporary displacement information and the modified height displacement information; enabling the calculation unit to calculate modified acceleration information according to the acceleration information and the angle information; enabling the calculation unit to calculate composite displacement information according to the initial speed information, the modified acceleration information and the predetermined time interval; and enabling a processing unit to generate location information according to the composite displacement information and the modified height displacement information.