Abstract: Techniques for filtering iono correction data for global navigation satellite system (GNSS) positioning are provided which involve determining a threshold, or mask, for iono correction filtering based on a statistical analysis of variance data included in iono correction data and resulting residual information determined using the iono correction data. The mask can subsequently be used as a threshold to filter iono correction data based on its variance data. In some examples, a server can determine the mask based on crowdsourced information received from multiple GNSS receivers. In other examples, a GNSS receiver may determine the mask based on obtained iono correction data and GNSS measurements it makes itself. When applying the mask to filter incoming iono correction data. When incoming iono correction data is filtered, a GNSS device may use alternative iono correction techniques to perform iono correction, in some embodiments.

Abstract: A method, for providing a virtual positioning signal measurement, includes: determining that an expected positioning signal measurement is absent from a plurality of actual positioning signal measurements made by a UE; and providing a virtual measurement value, for the expected positioning signal measurement, based on at least one actual positioning signal measurement that is of a same type as the expected positioning signal measurement and that corresponds to at least one positioning signal measured by the UE.

Abstract: Techniques are provided for integrating GNSS measurements between two or more GNSS receivers. An example method includes determining an antenna baseline vector based on relative locations of a first antenna that is communicatively coupled to a first GNSS receiver and a second antenna that is communicatively coupled to a second GNSS receiver, determining a first position estimate and a first integer ambiguity resolution (IAR) status with the first GNSS receiver at a first time, determining a second position estimate and a second IAR status with the second GNSS receiver at approximately the first time, computing a horizontal offset value based on the antenna baseline vector and a difference between the first position estimate and the second position estimate, and generating the wrong fix indication in response to the first IAR status being fixed, the second IAR status being fixed, and the horizontal offset value being greater than a threshold value.

Abstract: Techniques to detect and correct for cycle slips in global navigation satellite system (GNSS) positioning may involve using measurements from a series of continuous GNSS epochs in which certain preliminary conditions are met. Embodiments comprise using a first set of rounded values for the integer ambiguity values corresponding to the float ambiguity values of the epochs in the series, then analyzing the first set of rounded values to determine final integer ambiguity values for the set of epochs. Embodiments can include determining the offset between the first set and a second set of rounded values and analyzing the offset to determine which set of rounded values to use as the final integer ambiguity values. Some embodiments comprise determining the most common rounded value for the float ambiguity values and analyzing whether one or more other rounded values are used.

Abstract: The present invention discloses a progressive power grid planning evaluation method and system based on a combination assessment theory, and relates to the technical field of power grid assessment and optimization. The method includes: correcting a weight of an obtained index by using a combination weighting method; obtaining an assessed value based on a similarity theory assessment method; standardizing an index by dimensionless processing; and performing evaluation based on nonparametric regression. The present invention ensures objectivity and fairness of an assessment result and the efficiency and the accuracy of assessment are improved. The present invention may be adaptively adjusted, making the assessment result closer to reality.

Abstract: Techniques are disclosed for global navigation satellite system (GNSS) positioning of a GNSS device. Techniques may comprise determining an integer double difference (DD) carrier phase (CP) ambiguity based at least in part on an initial set of DD residuals, the initial set of DD CP residuals based at least in part on (i) one or more CP measurements of one or more GNSS signals, and (ii) an initial trajectory of the GNSS device. Techniques also may comprise determining an updated trajectory of the GNSS device based at least in part on the integer DD CP ambiguity, and determining an updated set of DD CP residuals based at least in part on the updated trajectory of the GNSS device. Techniques further may comprise outputting a position of the GNSS device based at least in part on the updated set of DD CP residuals.

Abstract: Aspects presented herein may improve/enhance camera-aided/assisted positioning by utilizing light and shadow created by an artificial light. In one aspect, a UE captures a set of images of an object using at least one camera. The UE estimates a direction of at least one light source based on a shadow of the object in the set of images, wherein the shadow of the object is created by the at least one light source. The UE calculates at least one of (1) a distance (d) between the at least one camera and a set of first features associated with the object based on the estimated direction of the at least one light source or (2) directional information of a set of second features associated with a surrounding environment that is within a threshold distance of the object.

Abstract: A method, apparatus, and system are disclosed for providing modified orbital assistance data to a mobile station to determine its location using global navigation satellite system (GNSS). In some example embodiments, a method for determining a location of a mobile station using orbital assistance data may include: receiving satellite positioning signals from a plurality of GNSS satellites; receiving orbital assistance data comprising a distance between a location on an antenna which is associated with a first frequency of the satellite positioning signals and a location on the antenna which is associated with a second frequency of the satellite positioning signals; and determining the location of the mobile station based on the orbital assistance data and the satellite positioning signals.

Abstract: A method of determining an integer ambiguity search space includes: obtaining, at an apparatus, a code phase measurement of a satellite vehicle signal comprising a pseudorandom noise code and a carrier signal; obtaining, at the apparatus, spatial information corresponding to a wireless terrestrial signal transferred between the apparatus and a terrestrial base station; determining, at the apparatus, a satellite positioning system carrier phase integer ambiguity search space based on the code phase measurement; and constraining a size of the satellite positioning system carrier phase integer ambiguity search space based on the spatial information.

Abstract: Techniques for global navigation satellite system (GNSS)-based positioning of a mobile device based on antenna phase center compensation are disclosed. The techniques can include determining a phase center profile of a receiver antenna of the mobile device that is placed in a fixed-frame condition and executing an antenna phase center compensation procedure upon detecting placement of the mobile device in a non-fixed frame condition. The antenna phase center compensation procedure can include obtaining attitude information of the mobile device based at least in part on sensor data obtained from one or more sensors of the mobile device, and incorporating the attitude information of the mobile device into the phase center profile of the receiver antenna of the mobile device. A global navigation satellite system-based positioning operation may be executed that includes antenna phase center compensation based at least in part on incorporating the attitude information into the phase center profile.

Abstract: Disclosed are techniques for vehicle positioning. In an aspect, a positioning engine aggregator of a host vehicle determines a position estimate of the host vehicle based on one or more position fixes determined by one or more positioning engines of the host vehicle, receives input from a user interface (UI) of the host vehicle to correct the position estimate of the host vehicle, and updates the position estimate of the host vehicle based on the input from the UI.

Abstract: The present invention discloses a live digital map driven distribution network planning scheme intelligent evaluation method and system, relating to the field of intelligent distribution network planning and evaluation. The method comprises: acquiring a live digital map image, acquiring plot information by using U-net convolutional neural network plot identification strategy based on a stacked auto-encoder, and selecting alternative planning schemes according to index hierarchy structures and data driving evaluation. By adopting the present invention, the precision and efficiency of planning scheme evaluation is improved.

Abstract: Techniques for global navigation satellite system (GNSS)-based positioning of a mobile device based on antenna phase center compensation are disclosed. The techniques can include determining a phase center profile of a receiver antenna of the mobile device that is placed in a fixed-frame condition and executing an antenna phase center compensation procedure upon detecting placement of the mobile device in a non-fixed frame condition. The antenna phase center compensation procedure can include obtaining attitude information of the mobile device based at least in part on sensor data obtained from one or more sensors of the mobile device, and incorporating the attitude information of the mobile device into the phase center profile of the receiver antenna of the mobile device. A global navigation satellite system-based positioning operation may be executed that includes antenna phase center compensation based at least in part on incorporating the attitude information into the phase center profile.

Abstract: An example method of position information authentication for a location application performed by a UE, the method comprising determining by a position engine, a position estimate of the UE and determining by the position engine, a position report message indicating the position estimate. The method also comprises determining by a security module, a digital signature generated using a first private key known to the UE and the position report message. The method further comprises transmitting the position report message associated with the digital signature to a location application executed by the UE or another device, wherein the location application is configured to provide one or more location-based services to the UE using the position estimate responsive to a successful authentication of the position report message using the digital signature generated based on the first private key.

Abstract: The present invention discloses a method for siting and sizing a flexible soft switch of a distribution network based on mixed second-order cone programming, including: acquiring interconnected flexible distribution system data; establishing and optimizing, based on the interconnected flexible distribution system data and an interconnected flexible distribution system constraint, a flexible soft switch siting and sizing model with a minimal daily comprehensive operation cost as an objective; and acquiring an optimal flexible soft switch siting and sizing solution by using combination of an improved sparrow algorithm and second-order cone programming to solve. The present invention is both reliable and economic.

Abstract: A method of wireless communication at a UE is disclosed herein. The UE obtains, via an antenna of the UE, a first indication of a first measurement of at least one RF signal at a first time instance. The UE obtains, via the antenna, a second indication of a second measurement of the at least one RF signal at a second time instance. The UE calculates a distance traveled by the UE between the first time instance and the second time instance. The UE calculates a DOA of the at least one RF signal based on the first measurement, the second measurement, and the distance traveled by the UE between the first time instance and the second time instance. The UE outputs a third indication of the calculated DoA of the at least one RF signal.

Abstract: A method, apparatus, and system are disclosed for providing modified orbital assistance data to a mobile station to determine its location using global navigation satellite system (GNSS). In some example embodiments, a method for determining a location of a mobile station using orbital assistance data may include: receiving satellite positioning signals from a plurality of GNSS satellites; receiving orbital assistance data comprising a distance between a location on an antenna which is associated with a first frequency of the satellite positioning signals and a location on the antenna which is associated with a second frequency of the satellite positioning signals; and determining the location of the mobile station based on the orbital assistance data and the satellite positioning signals.

Abstract: A method of determining an integer ambiguity search space includes: obtaining, at an apparatus, a code phase measurement of a satellite vehicle signal comprising a pseudorandom noise code and a carrier signal; obtaining, at the apparatus, spatial information corresponding to a wireless terrestrial signal transferred between the apparatus and a terrestrial base station; determining, at the apparatus, a satellite positioning system carrier phase integer ambiguity search space based on the code phase measurement; and constraining a size of the satellite positioning system carrier phase integer ambiguity search space based on the spatial information.

Abstract: A method and apparatus for generating a high-dynamic-range image, storage medium, and electronic device are provided.

Abstract: In an aspect, a position estimation entity may obtain a first differential round trip time (RTT) measurement based on a first RTT measurement between a user equipment (UE) and a first wireless node and a second RTT measurement between the UE and a second wireless node, may obtain a second differential RTT measurement based on a third RTT measurement between a third wireless node and the first wireless node and a fourth RTT measurement between the third wireless node and the second wireless node, and may determine a positioning estimate of the UE based at least in part on the first differential RTT measurement and the second differential RTT measurement.