The invention relates to an observation device having a location determination functionality for the high-accuracy determination of the spatial location and thus the position and orientation (for example, Euler angles: azimuth, elevation angle, and roll angle) of the observation device by analysis of a recorded camera image of the terrain surrounding the camera by means of the three-dimensional map information of a digital terrain model (DTM). For this purpose, the observation device comprises a camera having an objective lens and a camera sensor, a data memory, a sensor system, an analysis unit, and a display screen.

The invention relates to an observation device having a location determination functionality for the high-accuracy determination of the spatial location and thus the position and orientation (for example, Euler angles: azimuth, elevation angle, and roll angle) of the observation device by analysis of a recorded camera image of the terrain surrounding the camera by means of the three-dimensional map information of a digital terrain model (DTM). For this purpose, the observation device comprises a camera having an objective lens and a camera sensor, a data memory, a sensor system, an analysis unit, and a display screen.

A method and system for automatically updating a self-learning data repository. The method is executed in a processor of a server computing device to store a fingerprint map of an area in the self-learning data repository, the fingerprint map having positioning fingerprint data that includes magnetic spatial derivative fingerprint data, receive, at the self-learning data repository, at least one of mobile device signal data and mobile device sensor data correlated with a sequence of positions along a trajectory describing a movement of a mobile device relative to the area, the sensor data including mobile device magnetic spatial derivative data, and automatically update, using the processor, the self-learning data repository by adding the at least one of mobile device signal data and mobile device sensor data to the positioning fingerprint data.

A system, comprising a clock generating a timing signal, a magnetometer coupled to the clock and configured to receive the timing signal and to generate first heading data and a gyroscope coupled to the clock and configured to receive the timing signal and to generate second heading data. The system further includes a first adder coupled to the magnetometer and gyroscope and configured to determine a difference signal as a function of the first heading data and the second heading data and a constrain data system coupled to the first adder and configured to apply a limit to the difference signal. A combine delta system is coupled to the constrain data system and configured to combine two or more of the constrained data values to generate a combined delta signal, and a second adder coupled to the gyroscope and the combine delta system and configured to add the combined delta signal to the second heading data.

A system, comprising a clock generating a timing signal, a magnetometer coupled to the clock and configured to receive the timing signal and to generate first heading data and a gyroscope coupled to the clock and configured to receive the timing signal and to generate second heading data. The system further includes a first adder coupled to the magnetometer and gyroscope and configured to determine a difference signal as a function of the first heading data and the second heading data and a constrain data system coupled to the first adder and configured to apply a limit to the difference signal. A combine delta system is coupled to the constrain data system and configured to combine two or more of the constrained data values to generate a combined delta signal, and a second adder coupled to the gyroscope and the combine delta system and configured to add the combined delta signal to the second heading data.

The invention relates to a display system included in a device for traveling a path between at least two distinct points and for using at least one heading datum, wherein the display system comprises at least: an image sensor configured to acquire environmental images during the path traveled by the device; an image processing module capable of determining the drift of the device in real time; a module for determining information that is representative of the route taken by the device, a module for real-time determination of the true heading followed by the device from the information that is representative of the route and the drift of the device, a module for returning to the user information that is representative of the true heading.

A disclosed method includes computing, for each of a plurality of values of at least one type of error parameter, a distance traveled for each of a plurality of directions of travel. The method includes selecting, from the plurality of values of the at least one type of error parameter, a value that provides a greatest distance traveled for any of the plurality of directions of travel relative to the unselected ones of the plurality of values. The method further includes applying the selected value of the at least one type of error parameter to gyroscopic sensor data, and then determining navigation information based on the gyroscopic sensor data with the selected value of the at least one type of error parameter applied.

A disclosed method includes computing, for each of a plurality of values of at least one type of error parameter, a distance traveled for each of a plurality of directions of travel. The method includes selecting, from the plurality of values of the at least one type of error parameter, a value that provides a greatest distance traveled for any of the plurality of directions of travel relative to the unselected ones of the plurality of values. The method further includes applying the selected value of the at least one type of error parameter to gyroscopic sensor data, and then determining navigation information based on the gyroscopic sensor data with the selected value of the at least one type of error parameter applied.

A vehicle positioning method/apparatus including obtaining odometer data from an odometer of a vehicle during driving, predicting, based on the odometer data and a first working state of a filter at a first moment, a second working state of the filter at a second moment, the second moment being after the first moment, predicting location information of the vehicle at the second moment based on the second working state, selecting a target road section that matches the location information from candidate road sections in an electronic map, determining matching point information corresponding to the location information in the target road section, and correcting the location information based on the matching point information, to obtain positioning information of the vehicle at the second moment, the positioning information and working states of the filter being defined in the same coordinate system.

A vehicle positioning method/apparatus including obtaining odometer data from an odometer of a vehicle during driving, predicting, based on the odometer data and a first working state of a filter at a first moment, a second working state of the filter at a second moment, the second moment being after the first moment, predicting location information of the vehicle at the second moment based on the second working state, selecting a target road section that matches the location information from candidate road sections in an electronic map, determining matching point information corresponding to the location information in the target road section, and correcting the location information based on the matching point information, to obtain positioning information of the vehicle at the second moment, the positioning information and working states of the filter being defined in the same coordinate system.