Patent Document ID: 9383432
Application ID: 14400944
Patent Flag: 1

Claim One:
1. A positioning and tracking device comprising one or more processors configured to: acquire observed values of a plurality of receiving stations for each of observation points leading from a tracking start point of a target to a tracking end point of the target; calculate a Jacobian matrix of observed values associated with all the receiving stations by using the observed values; calculate an evaluation index for positioning accuracy for said target by using the Jacobian matrix; calculate a covariance matrix of positioning errors by using both the Jacobian matrix and a preset nominal observation error parameter; calculate a covariance matrix of tracking errors from the covariance matrices of positioning errors at first two observation points; update the covariance matrix of tracking errors by using said nominal observation error parameter; calculate an evaluation index for tracking accuracy for said target by using both the updated covariance matrix of tracking errors and said nominal observation error parameter; and generate a map for presentation on a display, the map being based at least in part on the evaluation index for the positioning accuracy and the evaluation index for the tracking accuracy.