Patent ID: 6263281
Filing Date: 2001-07-17
Classification: G01S

Abstract:
A GPS positioning apparatus which determines a position of an unknown point on the basis of a plurality of observation amounts obtained by receiving radio waves from the plurality of GPS satellites, said apparatus comprising:an input unit which inputs position information of a known point;an approximating unit which approximates the plurality of observation amounts obtained at the known point as approximate expressions using a time as a variable, respectively;a predicting unit which predicts, on the basis of the plurality of approximation expressions, a plurality of observation amounts at the unknown point at time at which a plurality of observation amounts are obtained at an unknown point as a plurality of observation amount prediction values; anda positioning unit which calculates the position of the unknown point on the basis of the position information of the known point and the plurality of observation amount prediction values from results obtained by correcting error components of the plurality of observation amounts at the unknown point.