| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 342461000 | With speed determination | 8 |
| 20120086606 | DOPPLER AIDED INERTIAL NAVIGATION - Doppler Aided Inertial Navigation (DAIN) facilitates the determination of position, velocity and direction of mobile devices operating in highly obstructed GPS/GNSS environments. Delivering high precision, high resolution positioning information using signals of opportunity, the present invention measures the Doppler shift of a moving device using a variety of signals combined with inertial accelerometers and environmental sensors to deliver an autonomous positioning and navigation capability that does not require external infrastructure or a priori knowledge of signal sources. | 04-12-2012 |
| 20130147668 | SPEED ESTIMATION METHOD - A speed estimation method including a reference value establishing step, an actual value establishing step, an approximate location calculating step, a weight location calculating step, a weight location determining step and a speed calculating step is disclosed. The reference value establishing step determines a plurality of training locations and establishes a reference signal strength set for each training location. The actual value establishing step establishes an actual signal strength set of a communication device at a time point. The approximate location calculating step calculates a plurality of signal strength differences according to the actual signal strength set and the reference signal strength set, and generates a plurality of approximate locations. The weight location calculating step calculates a weight location of the communication device. The weight location determining step determines whether two weight locations are obtained. The weight location determining step calculates a speed of the communication device. | 06-13-2013 |
| 20130314282 | POSITIONING SYSTEM - The invention relates to a ground-based positioning system for determining a location of a mobile object ( | 11-28-2013 |
| 20140097988 | SPEED ESTIMATION USING DELTA RTT MEASUREMENTS AND AREA MAPS - Systems and methods for two-dimensional (2D) velocity estimation of an object in an area of interest are disclosed. The area of interest can correspond to an indoor or an outdoor environment. Round trip times (RTTs) of signals from two or more signal sources to the object are determined. The object is relocated and delta RTT values of the signals subsequent to relocation of the object within the area of interest are determined. Angles of arrival (AOAs) of the signals at the object also determined. The 2D velocity of the object is estimated by on solving a system of non-linear equations based on the delta RTT values and the AOAs. | 04-10-2014 |
| 20140266913 | PERFORMANCE ENHANCEMENTS FOR LOCAL NETWORK OF BEACONS - Described are systems and methods relating to localized networks of beacons. | 09-18-2014 |
| 20140368386 | KALMAN FILTER FOR INDOOR POSITIONING - A position estimation method for indoor positioning includes filtering an initial position estimate that includes a corresponding covariance that reflects the quality of the geometry of the reference points and a previous initial position estimate that includes a corresponding covariance that reflects the quality of the geometry of the reference points by a Kalman filter to generate an updated previous position estimate, analyzing the updated previous position estimate to determine if the value is outside of a range, and constraining the updated previous position estimate based on the value being outside of the range. | 12-18-2014 |
| 20160131751 | DOPPLER AIDED INERTIAL NAVIGATION - Doppler Aided Inertial Navigation (DAIN) facilitates the determination of position, velocity and direction of mobile devices operating in highly obstructed GPS/GNSS environments. Delivering high precision, high resolution positioning information using signals of opportunity, the present invention measures the Doppler shift of a moving device using a variety of signals combined with inertial accelerometers and environmental sensors to deliver an autonomous positioning and navigation capability that does not require external infrastructure or a priori knowledge of signal sources. | 05-12-2016 |
| 20180024224 | METHOD AND SYSTEM OF TIMING AND LOCALIZING A RADIO SIGNAL | 01-25-2018 |
