Patent ID: 9234760
Filing Date: 2016-01-12
CPC Classification: G01C,G01S

Claim Text:
1. A method for implementation on a mobile transceiver device, comprising: determining a position of a mobile transceiver device based on received GPS signals; detecting, at the mobile transceiver device, inadequacy of a received GPS signal to update the position of the mobile transceiver device; wirelessly receiving, at the mobile transceiver device from a vehicle in which the mobile transceiver device is located, dead reckoning inputs, wherein the dead reckoning inputs include speed data, accelerometer data, and heading data of the vehicle; in response to the detecting inadequacy of the received GPS signal, using, at the mobile transceiver device, the speed data, the accelerometer data, the heading data, and a last GPS determined position to calculate a trial estimated position of the vehicle, wherein the trial estimated position is calculated by modeling variation of speed of the vehicle based on the accelerometer data to account for delay jitters, integrating the speed of the vehicle over predetermined time intervals, and incrementing a last dead-reckoning based position; producing an estimated position of the vehicle for use in producing a navigation output, wherein the producing the estimated position of the vehicle comprises: rendering a display of a map with the estimated position of the vehicle based on the revised trial estimated position of the vehicle.