The present disclosure relates to a precise point positioning (PPP) method performed by a satellite navigation device. In one embodiment, the method comprises: receiving multiple positioning signals from a plurality of navigation satellites of a satellite-based navigation system using a multi-frequency receiver; receiving space segment correction data for the navigation satellites of the satellite-based navigation system; separately requesting and receiving local assistance data, wherein the local assistance data represents atmospheric errors in the vicinity of the satellite navigation device; and computing at least one of a precise position or time based on the received positioning signals, the space segment correction data and the local assistance data. The present disclosure further relates to a satellite navigation device, method for providing assistance data to at least one satellite navigation device, an assistance server, a satellite-based positioning system, and a computer program.

A method for providing a differential code bias, in particular a primary differential code bias and a secondary differential code bias, in a global navigation satellite system using satellites communicating by using at least a first signal and an additional first signal both having a first carrier frequency and a second signal and an additional second signal both having a second carrier frequency, where a primary differential code bias for the first signal and the second signal is determined and wherein the primary differential code bias is used for determining, and in particular providing, a secondary differential code bias for the additional first signal and the additional second signal.

Exemplary embodiments include methods of estimating the position of a user equipment, UE, in association with a plurality of reference stations. Such embodiments can include performing one or more positioning measurements (e.g., carrier-phase measurements of GNSS satellite signals), and receiving transfer information between a first reference system and a second reference system. Such embodiments can also include determining an estimate of the UE's position based on the positioning measurements for the UE, the transfer information, and location coordinates of a plurality of entities (e.g., reference stations), wherein the location coordinates of at least one entity is associated with the first reference system and the location coordinates of at least one other entity is associated with the second reference system. Other embodiments include complementary methods performed by network nodes, as well as UEs and network nodes configured to perform such methods.

The system and method facilitates Real-Time-Kinematic (RTK) GNSS with long baseline between a rover receiver and a base station receiver, even in the presence of scintillation or ionospheric disturbances that spatially fluctuate. Residual atmospheric errors can be estimated by a dual error model in a filter to promote efficient fixing or resolution of carrier phase ambiguities.

A microservice node can include a network real-time kinematics (RTK) device to receive raw satellite data associated with a physical reference station via a first message in a first message queue, to receive static virtual location data associated with a static virtual reference station (VRS) agent, to generate corrections data for the static VRS agent based on the raw satellite data and the static virtual location data, and to transmit the corrections data to the static VRS agent. The microservice node can include the static VRS agent to publish the corrections data in a second message in a second message queue. The microservice node can include an adapter device to determine that the client device is located within a geographic area associated with the static VRS agent and to transmit the corrections data from the second message queue to the client device.

The present invention discloses a method, an apparatus, a computer storage medium, and a terminal for processing positioning information. According to embodiments of the present invention, through the IP (Internet Protocol) address of the user machine, the approximate position of the user machine is determined according to the obtained IP address; and a set of correction data of a virtual reference station to be sent to the user machine is determined according to the approximate position of the user machine. In the embodiments of the present invention, the user machine does not need to report its position, such that privacy issues related to the position report are eliminated; in addition, the processing of the virtual reference station is converted from two-way communication to one-way communication, thereby simplifying the communication interaction process of traditional Network RTK (Real-Time Kinematic) service which may be nationwide.

A local error estimation unit (515) of a local error generation device (500) estimates and generates local errors (δT, δI) based on global errors (δo, δt, δb) included in positioning augmentation information (81) produced in an electronic reference point network (120) and observed data (61) generated by receivers on electronic reference points (611, 612) not belonging to the electronic reference point network (120). The local errors (δT, δI) are errors that influence positioning accuracy in a region where the electronic reference points (611, 612) exist and that depend on the region where the electronic reference points (611, 612) exist.

Selective broadcast of corrective vehicle positioning information using a hyper-precise-positioning (HPP) proxy is presented herein. A system can obtain satellite navigation correction data; assign respective portions of the satellite navigation correction data to defined geographical regions to facilitate respective point-to-multipoint wireless broadcasts of the respective portions of the satellite navigation correction data to respective vehicles that have been determined to be located within the defined geographical regions; and distribute, via respective signaling planes, broadcast requests comprising the respective portions of the satellite navigation correction data to respective wireless access point devices to facilitate the respective point-to-multipoint wireless broadcasts of the respective portions of the satellite navigation correction data—such satellite navigation correction data facilitating correction of satellite navigation data that has been received by the respective vehicles.

A system or method for generating GNSS corrections can include receiving satellite observations associated with a set of satellites at a reference station, determining atmospheric corrections valid within a geographical area; wherein geographical areas associated with different atmospheric corrections can be overlapping, and wherein the atmospheric corrections can be provided to a GNSS receiver when the locality of the GNSS receiver is within a transmission region of the geographical area.

A network Real-Time Kinematic (RTK) service method includes acquiring, by a network RTK server, position information of one or more communication base stations. The method includes allocating, by the network RTK server, a corresponding RTK base station correction number to the communication base station according to the position information. The RTK base station correction number is a differential correction number of an RTK physical base station within a first preset distance range from the communication base station or a differential correction number of an RTK virtual base station generated according to the position information. The method includes sending, by the network RTK server, the allocated RTK base station correction number to the communication base station.