Patent ID: 6204807
Filing Date: 2001-03-20
Classification: G01S

Abstract:
A portable GPS positioning apparatus for receiving a signal from a GPS satellite and measuring at least one of a position and a speed of the portable GPS positioning apparatus, the portable GPS positioning apparatus comprising:GPS receiving means for receiving a signal from a GPS satellite;movement pitch detecting means for detecting the pitch of a repetitive movement of a portion of a human body corresponding to ambulatory motion of the human body;timer means for determining an operating period at which to intermittently receive a signal from a GPS satellite to obtain positioning data used for determining the position of the GPS positioning apparatus;stride calculating means for calculating, at a respective operating period, a stride of the human body during said ambulatory motion in accordance with positioning data corresponding to two positions and a movement pitch detected by the movement pitch detecting means during receipt of the positioning data; andspeed/distance calculating means for calculating, at a respective operating period, a speed and a distance of the ambulatory motion based on the stride determined by the stride calculating means and the pitch detected by the movement pitch detecting means.