Patent ID: 8009087
Filing Date: 2011-08-30
Classification: G01S

Abstract:
1. A positioning system, comprising: a dead reckoning module, estimating a first positioning data according to a measurement data of a current epoch, a third positioning data, and a feedback positioning data of a previous epoch, estimating a second positioning data according to the feedback positioning data of the previous epoch and the measurement data of the current epoch, and transmitting the second positioning data to a Global Navigation Satellite System (GNSS) module; the GNSS module, generating the third positioning data according to satellite communication or the second positioning data; a Geographic Information System (GIS) module, fitting the third positioning data to a map to generate a fourth positioning data taken as an output of the positioning system; and a calculating module, deriving the feedback positioning data of the current epoch from the fourth positioning data and the first positioning data according to predetermined weights, wherein the feedback positioning data of the current epoch is recursively fed back to the dead reckoning module for a next estimation.