Method for correcting position information
AssigneeHa Yoon Song and Hongik University Industry- Academia Cooperatiob Foundation
InventorHa Yoon Song
Life of this patent
Estimating the term…
Abstract
As a method for estimating a true value of a location having an error when acquired at a position information acquiring device, the estimating method is disclosed wherein the true value is estimated by interpolating among the location values acquired prior to and after the location having the error, and when a second location value acquired consecutively from the location having the error also has an error, the second location value is calibrated in advance.
Claims8
-17. (canceled)
A method of processing information on a plurality of tuples comprising latitude, longitude, and timestamp collected from a position information collection device, the method comprising:
- if it is determined that an acceleration value [i+1] at timestamp [i+1] has an error, substituting a latitude [i+1] (lati−1) acquired at the timestamp [i+1] with a corrected latitude [i+1] which is created by adding a latitude [i] (lati) acquired at a timestamp [i] to a representative value (MAVlatitude) obtained from one or more latitudes acquired before the timestamp [i+1], and substituting a longitude [i+1] (loni+1) acquired at the timestamp [i+1] with a corrected longitude [i+1] which is created by adding a longitude [i] (ion) acquired at a timestamp [i] to a representative value (MAVlongitude) obtained from one or more longitudes acquired before the timestamp [i+1];
- and
- if it is determined that a tuple [i] (Pi) at the timestamp [i] (ti) has an error, estimating an estimated latitude [i] (lati) at the timestamp [i] by interpolating one or more latitudes acquired before the timestamp [i] with the corrected latitude [i+1], and estimating an estimated longitude [i] (loni) at the timestamp [i] by interpolating one or more longitudes acquired before the timestamp [i] with the corrected longitude [i+1].
A user device comprising:
- a location information collecting unit configured to collect information on a plurality of tuples comprising latitude, longitude, and timestamp;
- and
- a processing unit configured to process the information on the plurality of tuples,
- wherein, the processing unit is further configured to:
- if it is determined that an acceleration value [i+1] at timestamp [i+1] has an error, substitute a latitude [i+1] (lati+1) acquired at the timestamp [i+1] with a corrected latitude [i+1] which is created by adding a latitude [i] (lati) acquired at a timestamp [i] to a representative value (MAVlatitude) obtained from one or more latitudes acquired before the timestamp [i+1], and substitute a longitude [i+1] (loni+1) acquired at the timestamp [i+1] with a corrected longitude [i+1] which is created by adding a longitude [i] (loni) acquired at a timestamp [i] to a representative value (MAVlongitude) obtained from one or more longitudes acquired before the timestamp [i+1];
- and
- if it is determined that a tuple [i] (Pi) at the timestamp [i] (ti) has an error, estimate an estimated latitude [i] (lati) at the timestamp [i] by interpolating one or more latitudes acquired before the timestamp [i] with the corrected latitude [i+1], and estimate an estimated longitude [i] (loni) at the timestamp [i] by interpolating one or more longitudes acquired before the timestamp [i] with the corrected longitude [i+1].
Dependencies are inferred from the claim text.