Methods, systems and computer program products for determining and filtering potential outliers in RF signals used in radionavigation are described. A radionavigation subsystem of a mobile device can determine a first location estimate of the mobile device. The mobile device can determine a free direction from the first location estimate. The free direction can be a direction along which RF signals may cause greater position errors than RF signals from other directions may cause. The mobile device can determine a potential outlier among the received RF signals, the potential outlier being an RF signal from a signal source in the free direction. The mobile device can indicate to the radionavigation subsystem that a weight of the potential outlier shall be reduced when determining a second location estimate of the mobile device using the RF signals.

[Object] To provide a reception apparatus, a program, and a reception method that are capable of acquiring altitude information by a method suitable for a wearable device and improving position calculation accuracy. [Solving Means] The reception apparatus according to the present technology includes an altitude information acquisition unit and a positioning calculation unit. The altitude information acquisition unit acquires altitude information externally calculated via proximity wireless communication. The positioning calculation unit performs positioning computation on the basis of a received global navigation satellite system (GNSS) signal and the altitude information supplied from the altitude information acquisition unit.

According to various embodiments, an electronic device comprises: a housing; a touchscreen display viewed through a part of the housing; at least one communication module located inside the housing; a processor located inside the housing and operationally connected to the display and the at least one communication module; and a memory located inside the housing and operationally connected to the processor, wherein the memory is provided to store a location measurement map, and can store instructions allowing, when executed, the processor to check the location of the electronic device by using the communication module, determine a block corresponding to the location of the electronic device on the location measurement map on the basis of at least a portion of the checked location of the electronic device, determine the location measurement method on the basis of at least a portion of priority information about a position source for the determined block and position source information about the electronic device, and measure the final location of the electronic device by means of the determined location measurement method by using the communication module. Other embodiments are possible.

A method of receiving and decoding non-legacy GNSS signals and re-transmitting these in real-time as legacy GPS (L1-C/A) signals decoding into standard PVT/PNT information then re-encoding using a real-time GPS simulator as legacy GPS code signals, and outputting as a legacy GPS antenna signal. A navigational apparatus for performing the method may further include an Inertial Measurement Unit, Inertial Navigation System (IMU/INS) module and oscillator coupled to the GPS simulator for providing an inertial location signal supplementing the GNSS signal to the GPS simulator, wherein the GPS simulator encodes the RF simulated GPS signal based at least in part on the inertial location signal for a period when at least one of the GNSS signal or the PVT/PNT signal is not available.

A vehicle position estimation apparatus according to the present invention includes a painted line recognition result processing unit configured to calculate whether the vehicle has made a lane change and a direction of the lane change when the vehicle has made the lane change, a vehicle lateral position calculating unit configured to calculate a lane where the vehicle is in travel and a vehicle lateral position that is a lateral position of the vehicle in the lane based on whether the vehicle has made the lane change, the direction of the lane change, and a lane connection relation, and an on-map vehicle position calculating unit configured to calculate an on-map position of the vehicle on the road based on a map information, the lane where the vehicle is in travel, the vehicle lateral position, and a forward travel distance.

A robot according to an embodiment may include at least one driving motor for providing a driving force for driving of the robot, a position detector including at least one sensor or receiver for detecting a position of the robot, a pressure detector including at least one sensor for detecting whether a user who in on board the robot gets off the robot and a processor for detecting the position of the robot through the position detector, recognizing that the user has arrived at the destination when it is detected that the user gets off the robot and recognize that the user has not arrived at the destination when it is not detected that the user gets off the robot.

A global positioning system (GPS) receiver and system for determining a geographical location associated with the GPS receiver using less than four GPS signals. The system can comprise a constraint module configured to receive one or more constraints that describe at least one characteristic of a GPS receiver when a number of GPS satellites within a line of sight to the GPS receiver is below a defined value. The system can further comprise a pseudo range calculation module configured to calculate a plurality of pseudo ranges between the GPS receiver and the number GPS satellites, wherein the plurality of pseudo ranges are to various orbital positions of the GPS satellites over a period of time; and a geographical location module configured to determine the geographical location of the GPS receiver using the plurality of pseudo ranges and known constraints of motion associated with the GPS receiver.

A navigational apparatus and method for augmenting a GNSS signal to the GPS simulator with alternative position, navigation, or timing (PNT) data, wherein the GPS simulator encodes an RF-simulated GPS signal based on the alternative PNT data when the GNSS signal is not available or is denied. The alternative PNT data may be provided by one or more of an Inertial Measurement Unit, Inertial Navigation System (IMU/INS) module and oscillator coupled to the GPS simulator.

In one aspect of the present disclosure, an apparatus for locating a mobile railway asset is provided that includes a power source, GNSS circuitry configured to utilize electrical power from the power source to receive GNSS data, and a controller operatively coupled to the power source and the GNSS circuitry. The controller has a power saving mode wherein the controller inhibits the GNSS circuitry from receiving GNSS data and a standard accuracy mode wherein the controller permits the GNSS circuitry to receive GNSS data for a first time period. The controller has a higher accuracy mode wherein the controller permits the GNSS circuitry to receive GNSS data for a second time period longer than the first time period, and subsequently across multiple instances, in order to collect more GNSS data that can be qualified, filtered, sorted, and averaged to produce a more accurate result.

An exercise track recording method and a related device are provided. The exercise track recording method includes: recording, by an electronic device, an exercise track in a first mode (S102); recording the exercise track in a second mode when a first condition is met (S103); and when a second condition is met, sending stored processed GPS data of at least two location points to an application processor, and recording the exercise track in the first mode (S104). According to the method, the application processor can enter a sleep state when the exercise track is recorded in the second mode, to reduce power consumption.