Abstract: A multiple-access transceiver handles communications with mobile stations in environments that exceed mobile station design assumptions without necessarily requiring modifications to the mobile stations. One such environment is in Earth orbit. The multiple-access transceiver is adapted to close communications with mobile stations while exceeding mobile station design assumptions, such as greater distance, greater relative motion and/or other conditions commonly found where functionality of a terrestrial transceiver is to be performed by an orbital transceiver.

Abstract: This application provides a handover method and apparatus in satellite communications. The handover method in satellite communications in this application includes: obtaining, by a terminal device, ephemeris information of first satellite base stations, where the first satellite base stations are satellite base stations that cover the terminal device; determining, by the terminal device based on the ephemeris information, a destination satellite base station to which the terminal device needs to hand over; determining, by the terminal device based on the determined destination satellite base station, a first time at which the terminal device is to hand over to the destination satellite base station; and handing over, by the terminal device based on the determined first time, to a destination cell served by the destination satellite base station.

Abstract: In some implementations, an apparatus may receive a request for the Global Navigation Satellite System (GNSS) position fix information. The request may include an accuracy requirement. The apparatus may determine a set of GNSS bands to use to determine the GNSS position fix information. The set of GNSS bands may comprise one or more bands from a plurality of available GNSS bands, and determining the set of GNSS bands to use may be based at least in part on the accuracy requirement. The apparatus may determine the GNSS position fix information based at least in part on GNSS signals received via the selected set of GNSS bands. The apparatus may provide the GNSS position fix information (e.g., to an application processor). The GNSS position fix information may comprise a GNSS position fix, pseudorange information, or both.

Abstract: A method for GNSS-based localization of a vehicle includes receiving a first set of satellite orbit data, using the first set of satellite orbit data when determining a first localization result, receiving a second set of satellite orbit data, checking a plausibility of the first set of satellite orbit data using the second set of satellite orbit data, and manipulating the first set of satellite orbit data and/or the first localization result and/or a localization filter when the plausibility check was not successful.

Abstract: This application relates to the field of communications technologies, and provides a time synchronization method and an apparatus, to perform positioning and/or timing error measurement on a target terminal in a wireless communications system, so as to avoid a relatively large positioning error caused by a timing error between the target terminal and a base station. The method is used in a wireless positioning system, where the wireless positioning system includes a first node and a second node, and the method includes: The first node receives an arrival time t2 of a first reference signal and a sending time t3 of a second reference signal that are sent by a second node, where the first reference signal is sent by the first node, and the second reference signal is sent by the second node.

Abstract: A method for providing mobile connectivity in a transportation vehicle with a cellular connectivity unit using a first subscriber identification module associated with a first subscription for a first Mobile Network Operator and at least a second subscriber identification module associated with a second subscription for a second Mobile Network Operator. A first Access Point Name interface and at least one further Access Point Name interface are configured, wherein both are related to the first subscriber identification module. The first Access Point Name interface is used for network registration and data transport of the cellular connectivity unit assigned to the first subscriber identification module. The at least one further Access Point Name interface is used for network registration and data transport of the cellular connectivity unit assigned to the second subscriber identification module.

Abstract: A method of passive asset tracking using observations of one or more pseudo Wi-Fi access points includes associating unique identifying information of a pseudo Wi-Fi access point with a moveable asset in an asset tracking database, receiving observation data from a Wi-Fi AP Database including the unique identifying information of the pseudo Wi-Fi access point and location information of the pseudo Wi-Fi access point, determining a location of the moveable asset based, at least in part, on the observation data of the pseudo Wi-Fi access point, and storing the location of the moveable asset in the asset tracking database. There is no communication between the asset tracking database and one or more wireless devices that report an encounter with the pseudo Wi-Fi access point to the Wi-Fi AP Database.

Abstract: An example system includes a positioning surveillance system (PSS) to identify locations of objects that are movable throughout a space. The PSS is configured to identify the locations without requiring a line-of-sight between the objects. A control system is configured to determine distances based on the locations of the objects in the space and to communicate information to the objects that is based on the distances. The information is usable by the objects for collision avoidance.

Abstract: A device manager (200; 300; 400) and associated method for controlling one or more devices (203a-c; 403a-c). The device manager comprises a receiver (304) configured to receive sensor data from one or more sensors (202a-d; 402a-d). The device manager comprises a device controller (314) configured to determine device control data for controlling the operation of one or more devices based on the received sensor data and one or more policy rules stored in a memory (306). The device manager comprises a transmitter (302) configured to transmit the device control data to the one or more devices. The receiver is further configured to receive, from a network node (212, 214; 412) of a telecommunications network, user equipment, UE, data relating to one or more UEs (426a-c) associated with the one or more devices. The device controller is further configured to determine the device control data based on the received UE data.

Abstract: The present invention provides a method and apparatus used to reduce the estimated field of uncertainty of satellite positions in space. This reduced field of uncertainty estimate reduces link acquisition time of satellites as they establish inter-satellite optical links between each other. The method and apparatus reduces the estimated field of uncertainty by combining estimated field of uncertainty generated by multiple independent sources. The method further includes combining estimated field of uncertainty generated using existing field of uncertainty techniques with estimated filed of uncertainty created by a machine vision detection and location module. This machine vision detection and location module generates an estimated field of uncertainty that is a result of executing of one or more algorithms to process digital imagery data provided by a passive digital camera.

Abstract: This disclosure provides systems, methods and apparatus for communicating a satellite behavior change. In one aspect, a satellite identifies a satellite behavior change to occur for the satellite of a non-terrestrial network for cellular communications. The apparatus also signals the satellite behavior change to a user equipment serviced by the satellite. In another aspect, a user equipment obtains, from a satellite servicing the user equipment, a signaling of a satellite behavior change to occur for the satellite. The user equipment also adjusts one or more user equipment parameters for cellular communication based on the obtained signaling. The satellite behavior change may include a satellite attitude or a transmit power or coverage area of one or more satellite beams. The user equipment parameters may include satellite or beam selection or reselection to listen to paging information, satellite or beam handover parameters, or transmit power control parameters.

Abstract: A satellite radiowave receiving device includes a receiver receiving radiowaves transmitted from a positioning satellite; and a processor performing a positioning operation using the radiowaves received by the receiver. If the receiver starts receiving radiowaves for the positioning operation, the processor obtains date and time information based on radiowaves received from a single positioning satellite after the receiver starts receiving radiowaves. The processor preforms a positioning calculation using the obtained date and time information and preliminarily retained positional information on the positioning satellite.

Abstract: An assisted satellite positioning system based on detecting signals from a number of satellites includes: (a) a mobile receiver; and (b) a base station communicating with the receiver over a low-power wireless communication network, the base station providing ephemeris data of a selected number of the satellites, but not all, using a compressed data format. The ephemeris data may include data concerning doppler frequency variations or elevation variations of the selected satellites over a predetermined time interval. The doppler frequency variations and the elevation variations may be represented in the compressed format by coefficients of a polynomial function of time. The polynomial function may be weighted to have lesser relative errors in larger doppler frequencies than lesser doppler frequencies, or to have lesser relative errors in lesser elevations than larger elevations. In one implementation, the low-power wireless communication network—such as a LoRa network—that has a range of at least 10 miles.

Abstract: Apparatus and methods permit the use of a microelectromechanical systems (MEMS) oscillator in a satellite positioning system receiver, such as a Global Positioning System (GPS) receiver. Techniques to ameliorate jitter or phase noise disadvantages associated with MEMS oscillators are disclosed. For example, a receiver can use one or more of the following techniques: (a) use another source of information to retrieve ephemeris information, (2) perform advanced tight coupling, and/or (3) use a phase-locked loop to clean up the jitter or phase noise of the MEMS oscillator. With respect to advanced tight coupling, an advanced tight coupling processor can include nonlinear discriminators which transform I and Q data into linear residual measurements corrupted by unbiased, additive, and white noise. It also includes an amplitude estimator configured to operate in rapidly changing, high power noise; a measurement noise variance estimator; and a linear residual smoothing filter for input to the navigation filter.

Abstract: This in-vehicle device is provided with: a determination information acquiring unit for acquiring determination information related to a vehicle; and a timing setting unit for setting, on the basis of the determination information, a timing for downloading satellite orbit information.

Abstract: Instead of users (e.g., independent owners/operators of different satellites) having to calculate orbit determination for each satellite themselves, an orbit determination service automatically calculates the orbit determination (OD) based on a user request. The calculated OD can then be used by a satellite ground station service to determine appropriate orientations for a ground station antenna in order to communicate with the satellite. In some embodiments, the OD service uses information from the calculations of ODs for multiple satellites and users to update a model used in the OD calculation, for example, to provide a more accurate model for Earth's atmosphere to be applied in subsequent OD calculations. In some embodiments, the OD service uses a user-provided computer-aided drawing (CAD) file of the satellite to produce or tune models specific to the satellite, for example, to generate more accurate models for solar radiation pressure and ballistic drag.

Abstract: A method for accurately and efficiently calculating a dense ephemeris of a high-eccentricity orbit is provided. With respect to the ephemeris calculation of the high-eccentricity orbit, the method constructs uneven interpolation nodes through time transformation and interpolates by an interpolation polynomial based on uneven interpolation nodes to obtain a dense ephemeris, which significantly improves the calculation efficiency and accuracy. Based on a large-scale numerical experiment, the method derives an optimal universal value (that is, 0.3) of a transformation parameter for all orbital eccentricities and various interpolation polynomials. In the case of using the optimal universal value of the transformation parameter ?, the method further verifies the Hermite interpolation polynomial as the preferable one among various interpolation polynomials.

Abstract: A satellite radio wave sensitivity distribution management system for a work vehicle that travels automatically in a work site by satellite navigation technology includes a satellite positioning module that outputs satellite position data and reception sensitivity based on satellite information from a satellite, a sensitivity reduction event detection section that detects occurrence of a sensitivity reduction event, a sensitivity reduction event information generation section that generates sensitivity reduction event information including an occurrence location of the sensitivity reduction event, an occurrence time of the sensitivity reduction event, and satellite identification data, a sensitivity reduction event information storage section, a reception obstacle determination section that determines a reception obstacle as the cause of the sensitivity reduction event, and a sensitivity reduction management section that manages a sensitivity reduction area and a sensitivity reduction time zone.

Abstract: A method and devices are disclosed for producing a RTT vector (RTV) that is based upon the change in an airborne measuring station position and the corresponding RTT results taken at known time intervals to a ground based target station. In one embodiment, the target station is an access point or station conforming to the IEEE 802.11 standard and the airborne measuring station 110 may also be a device that conforms to the IEEE 802.11 standard. The disclosed method enables the location of a target station to an accuracy in the order of, for example, less than one half degree of bearing within, for example, a period in the order of 5 seconds.

Abstract: A system for navigating a host vehicle may include at least one processing device. The at least one processing device may be programmed to receive, from an image capture device, images representative of an environment of the host vehicle. The at least one processing device may also be programmed to analyze the images to identify features within the environment of the host vehicle. The at least one processing device may also be programmed to: obtain map data corresponding to the environment of the host vehicle, the map data comprising information of the features. The at least one processing device may also be programmed to match the features identified from the images with information of the features within the environment, obtained from the map data; and localize a position of the host vehicle within a roadway using the matched features and elevation information associated with the roadway.

Abstract: This document describes techniques and apparatuses for base station location authentication. In particular, a base-station-location server 264 provides protection against a Global Navigation Satellite System (GNSS) spoofing attack or a cellular-network spoofing attack by auditing processed locations 504 of base stations 120 within a cellular network. The base-station-location server 264 maintains a list of authenticated base stations, generates a security key 321 for a base station 120 that is authenticated, and sends the security key 321 to the base station 120 in an authentication message 522. The authenticated base station 120 uses the security key 321 to generate an encrypted positioning reference signal that protects timing information and/or a location 504 of the base station 120. The encrypted positioning reference signal also enables a user equipment (UE) to determine that the base station 120 is authenticated by the base-station-location server 264.

Abstract: A method of blocking apps and/or features on a smart device is provided. The smart device may include a GPS receiver and one or more wireless receiver devices. The method may include: detecting, by a control app running on the smart device, movement of the smart device into or out of a predetermined region based on data received by the GPS receiver and/or one or more of the wireless receiver devices; and blocking one or more apps and/or features on the smart device when the smart device is within the predetermined region. The method may include determining a current time; and wherein the one or more apps and/or features is blocked when both the smart device is within the predetermined region and the current time is within a predetermined time period. Also provided is a smart device, a server, and a system including a smart device and a server.

Abstract: An example system can include a first antenna having a first orientation, a second antenna having a second orientation and a control system communicating with the first antenna and the second antenna. The control system performs operations which can include determining a pathway of a satellite, comparing the pathway to a first radiation pattern of the first antenna and a second radiation pattern of the second antenna, wherein the first antenna and the second antenna are each positioned such that a first keyhole of the first antenna does not overlap a second keyhole of the second antenna, to yield a comparison and selecting, based on the comparison, one of the first antenna or the second antenna to communicate with the satellite along the pathway.

Abstract: A positioning satellite selection device that obtains a selection combination of positioning satellites used for positioning of a positioning target, and includes: a positioning data acquisition unit that acquires positioning data or navigation information, a range observation value, and an error correction value of this range observation value of a positioning satellite; a satellite position calculator that calculates a satellite position of the positioning satellite from the navigation information; a quality evaluation unit that evaluates quality of the positioning data; a shortest time designation unit that sets a shortest selection time during which the positioning satellite is selected to a larger value as poorer the quality; a plan creator that obtains the selection combination by selecting a positioning satellite conditioned on selecting for longer than the shortest selection time; and a plan storage that stores a plan of the selection combination of positioning satellites.

Abstract: A method, computer system, and a computer program product for power-efficient location tracking is provided. The present invention may include, storing, by a first device, a first set of location data associated with a first segment mapping of a route, wherein the stored first set of location data is collected according to a group processing task. The present invention may include, receiving, from at least one second device, at least one second set of location data associated with at least one second segment mapping of the route, wherein the received at least one second set of location data is collected according to the group processing task. The present invention may include, mapping, based on combining the first set of collected location data and the received at least one second set of location data, a complete route including the first segment mapping and the at least one second segment mapping.

Abstract: According to an embodiment, an apparatus for precise position correction using a positioning difference comprises a first distribution information obtaining unit gathering first distribution information from an external terminal, a global navigation satellite system (GNSS) receiver obtaining a GNSS positioning value of the apparatus based on a GNSS, and a positioning correcting unit obtain a corrected location of the apparatus by correcting the GNSS positioning value using the gathered first distribution information. The first distribution information includes a GNSS positioning value of the external terminal, a GNSS positioning time, a precise positioning value, and a positioning difference between the GNSS positioning value and the precise positioning value.

Abstract: A navigation system includes a receiver and a signal processor. The receiver is mounted on a second aircraft. The second aircraft is an acquisition target of location information. The receiver is configured to receive a navigation signal from each of three or more first aircrafts. The navigation signal includes the location information on a location of the corresponding first aircraft. The navigation signal is transmitted as a radio signal from a navigation apparatus mounted on each of the three or more first aircrafts. The signal processor is mounted on the second aircraft. The signal processor is configured to calculate a location of the second aircraft on the basis of the navigation signal.

Abstract: A positioning support device holds available stored data which enables a determination of characteristics of radio signals transmitted by the positioning support device, wherein the characteristics of radio signals are expected to be observable at different locations. The positioning support device automatically and repeatedly transmits the stored data. Mobile devices may receive the data to estimate their position based on the data and based on measurements on radio signals received at their current location. The positioning support device may be caused by some other apparatus to store the data that is transmitted by the positioning support device. The data may be obtained based on characteristics of radio signals observed by at least one mobile device at each of a plurality of measurement locations.

Abstract: Disclosed are a synchronization method and device, which are used to achieve the distinction of a synchronization system and a synchronization level of a node in a V2V communication system, thereby quickly achieving the synchronization in the V2V communication system. Provided is a synchronization method, comprising: determining a synchronization priority level of a current node; and according to the synchronization priority level of the current node, determining a synchronization sequence used by the current node and a value of a distinguishing flag bit of the current node, wherein the distinguishing flag bit is used to distinguish whether the current node belongs to a GNSS synchronization system or an eNB synchronization system.

Abstract: The disclosure relates to a signal processing device and method, and an information processing device and method, in which a distance between a position where a signal is transmitted and a position where the signal is received can be obtained with higher accuracy. A predetermined signal is transmitted as a radio signal at a predetermined timing known to a receiving side. Additionally, a propagation delay amount, which is a delay amount from a transmission timing to a reception timing of a predetermined signal received as a radio signal, is calculated on the basis of a correlation between the signal and a reference signal synchronized with the transmission timing. Furthermore, the distance between the position where a predetermined signal is transmitted and the position where the signal is received is calculated on the basis of a propagation delay amount of the signal.

Abstract: Output devices (or output controllers connectable to an output device) that is wirelessly discoverable by an information apparatus are herein disclosed and enabled. An output device may be an audio output device, a printer, a television, a projector, or a display device. The output device may include one or more chips or chipsets that are compatible with Bluetooth or IEEE 802.11 standards. The output device is operable to: wirelessly announce its availability for the information apparatus to wirelessly discover the output device when the information apparatus is within a limited physical distance to the output device; wirelessly transmit one or more device attributes related to the output device from the output device to the information apparatus that has wirelessly discovered the output device; and wirelessly receive, from the information apparatus, output data that is in accordance, at least in part, with the one or more device attributes.

Abstract: The present disclosure relates to an intelligent device and an intelligent system. The intelligent device includes a panel, a first communication interface and a processor unit, wherein the processor unit is configured to: when the first communication interface is connected with a second communication interface of the mobile terminal, send a request message to the mobile terminal through the first communication interface, and receive a response message sent by the mobile terminal, or receive a control instruction sent by the mobile terminal though the first communication interface, and perform a corresponding operation according to the control instruction. Through the above technical solution, the intelligent device is capable of achieving a convenient connection with the mobile terminal, so that the mobile terminal can be used as a module for communication, processing, networking and other functions of the intelligent device so as to achieve the intelligence of the intelligent device.

Abstract: A method for validating time assistance data includes receiving, at a mobile device, the time assistance data via a first wireless communication technology from a serving cell. The method also includes obtaining a reference global navigation satellite system (GNSS) time, at the mobile device, via a second wireless communication technology and determining whether the time assistance data is valid based on the reference GNSS time. Further included in the method is determining a validated GNSS time based on the time assistance data in response to determining that the time assistance data is valid.

Abstract: Aspects of the disclosure provide an apparatus that includes a receiving circuit and a processing circuit. The receiving circuit is configured to receive a satellite signal transmitted from a satellite. The satellite signal carries navigation bits that are transmitted with a navigation bit length. The processing circuit is configured to construct aiding navigation bits based on aiding ephemeris and almanac information that are provided by an aiding source other than the satellite signal. Further, the processing circuit is configured to strip the navigation bits from the satellite signal based on the aiding navigation bits to generate a post-stripping signal, and perform an integration on the post-stripping signal.

Abstract: A location specifying apparatus comprises a first circuit and a second circuit. The first circuit is configured to store information regarding a predetermined feature including location information of the predetermined feature, information regarding a position of a specific point on a road, and information indicating a correlation of the information regarding the predetermined feature to the information regarding the position of the specific point on the road. The second circuit is configured to obtain image data ahead of a moving body; to identify a location of the predetermined feature in an image expressed by the image data, based on the information regarding the position of the specific point on the road, the information indicating the correlation, and the information regarding the predetermined feature; and to specify the location of the moving body, based on the identified location of the predetermined feature.

Abstract: Embodiments of this application provide a method for transmitting positioning assistance data and a device. The method includes: receiving, by a network device, at least one positioning assistance data message sent by a positioning server, where the at least one positioning assistance data message is used to carry positioning assistance data; and broadcasting, by the network device, a system message to a terminal device, where the system message is used by the terminal device to obtain the positioning assistance data. According to the embodiments of this application, the network device broadcasts the system message to broadcast the positioning assistance data. In this way, a problem of low efficiency of transmitting existing centralized positioning assistance data can be resolved, and a problem in the prior art that a positioning server needs to perform signaling communication with each terminal device in a unicast transmission scenario can be avoided, thereby reducing signaling overheads.

Abstract: Multi-factor authentication systems and methods are provided that include receiving a request to authenticate a user of a mobile device. The request for authentication may include credential information associated with the user and vehicle data. A determination may be made regarding whether the vehicle data was obtained from a vehicle via the mobile device. The received vehicle data and received credential information may be compared to stored data. When there is a match between the received vehicle data and received credential information and corresponding stored data, a notification may be provided to the user device, indicating that the user has been authenticated.

Abstract: A moveable object determines a preliminary position for the moveable object using received satellite navigation signals and satellite orbit correction information and satellite clock correction information. A position correction is determined by identifying which cell, of a predefined set of geographical cells, corresponds to the determined preliminary position, and obtaining from a database, pre-computed tectonic terrestrial plate position information for the identified cell. Based on the information for the identified cell, a tectonic terrestrial plate, corresponding to the determined preliminary position of the moveable object is identified.

Abstract: A navigation signal transmitting apparatus, provided on ground, for transmitting a navigation signal to a receiver capable of positioning by receiving a spread spectrum satellite positioning signal from a satellite has first and second transmission antennas; a message generating unit that generates a message signal of positional information included in the navigation signal, and a modulating unit that modulates the message signal by a modulation process including spectrum spreading, based on spread codes of the same sequence as the satellite positioning signal allotted in advance to the navigation signal transmitting apparatus, for generating first and second navigation signals. The modulating unit executes the modulating process using either one of the first and second navigation signals as an object of demodulation at each time of reception by the receiver.

Abstract: Example methods disclosed herein include accessing carrier phase measurements and code measurements obtained for a plurality of satellite signals of a global navigation satellite system. Disclosed example methods also include determining an initial set of floating-point ambiguities based on the measurements, the initial set of floating-point ambiguities including inter-frequency bias (IFB). Disclosed example methods further include performing a least squares search process based on the initial set of floating-point ambiguities to determine a set of integer ambiguities and an estimate of the IFB. In some examples, an additional (e.g., wide-lane) filter is used to realize a combination of carrier phase and code IFB. In some examples, IFB estimation is further realized by determining a median of IFB estimates over a window time. In some examples, the resulting IFB estimate and the set of integer ambiguities are used to estimate a position of a receiver, determine a satellite correction signal, etc.

Abstract: A satellite-based positioning method includes: obtaining predicted satellite data for at least one satellite vehicles (SVs) in a global navigation satellite system (GNSS); obtaining reference satellite data for the at least one SV; calculating satellite prediction error data for each of the at least one SV according to the predicted satellite data and the reference satellite data; and utilizing a processing unit to calculate a parameter for each of the at least one SV based on the satellite prediction error data. An associated satellite-based positioning apparatus is also provided.

Abstract: Various embodiments are described that relate to global position and time information. Two devices can be in communication with one another. The first device can be able to communicate with a satellite system while the second device is unable to communicate with the satellite system. The second device can send a request for global position and time information at a first time that is received by the first device at a second time. At a third time, the first device can send the global position and time information that is received by the second device at a fourth time. The second device can use the first time, second time, third time, and fourth time to compensate for delay caused by the request being sent and the arrival of the information.

Abstract: Disclosed herein are various embodiments for publishing a service offer set to a device agent on an end-user device and for on-device selection of a service. In some embodiments, a network system publishes a service offer set to an end-user device over a wireless access network, receives an offer set user selection from the end-user device, and provisions one or more network functions based on the offer set user selection.

Abstract: Example methods, apparatuses, and/or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate and/or support one or more operations and/or techniques for enhancing positioning, which may include E911 positioning, via measurement batching, such as for use in or with mobile communication devices, for example.

Abstract: Techniques for supporting a control plane solution for location services and positioning are described. In an aspect, an Evolved Serving Mobile Location Center (E-SMLC) may communicate with a Mobility Management Entity (MME) to support location services and positioning for a UE. In one design, the E-SMLC may receive a location request from the MME, perform a positioning procedure with the UE in response to the location request, and send a location response to the MME after completing the positioning procedure. For a UE-assisted or UE-based positioning procedure, the E-SMLC may send a downlink positioning message to the UE via the MME and may receive an uplink positioning message from the UE via the MME. For a network-based positioning procedure, the E-SMLC may send a network positioning request message to an eNB via the MME and may receive a network positioning response message from the eNB via the MME.

Abstract: A method and system are provided. A first request for satellite navigation data is provided to a vehicle to everything V2X receiver. Satellite navigation data recovered from a V2X message is received from the V2X receiver. The satellite navigation data is provided to a satellite navigation system receiver. The satellite navigation data comprises the data required by the satellite navigation system receiver to perform a hot start.

Abstract: A system to select a type of satellite from a plurality of types of satellites in a multi-constellation of satellites is provided. The system includes at least a first receiver configured to input signals from a first type of satellite and a second receiver configured to input signals from a second type of satellite and a processor. The processor: executes a multi-constellation-selection software module to associate a current position with a mapping feature and select at least one selected type of satellite from the plurality of types of satellites based on the associated mapping feature; executes a compute-position/velocity/time (PVT) software module to compute a current position/velocity/time based on at least one selected input signal input at a receiver associated with the at least one selected type of satellite; and feeds the computed current position/velocity/time to the multi-constellation-selection software module based on the execution of the compute-PVT software module.

Abstract: There is provided an information processing apparatus including a satellite positioning unit, an environment information acquiring unit, a reception information acquiring unit and an operation condition setting unit. The satellite positioning unit performs positioning based on a positioning signal received from a positioning satellite. The environment information acquiring unit acquires environment information unique to a current location. The reception information acquiring unit acquires reception information indicating a state of the positioning signal at the current location based on the environment information The operation condition setting unit sets an operation condition of the satellite positioning unit based on the reception information.

Abstract: Method for precise GNSS positioning system with improved ambiguity estimation. The method is based on the realization that, especially during convergence, the estimated float ambiguities are biased when estimated simultaneously with the ionosphere parameters. The “ionosphere-like” biases can be separated from the actual float ambiguities by using the fixed wide-lane (or extra wide-lane) integer ambiguities. The original real-valued ambiguities (e.g., one of L1, L2 and L5 in the GPS case) are corrected using the corresponding biases, resulting in reliable float ambiguities that are taken as input in the next processing step.

Abstract: Systems and methods are provided to allow for the use of existing satellite identification parameters generically, so as to allow for Global Navigation Satellite System (GLONASS) identification. In addition, an optional or conditional parameter is linked to the satellite identification parameter for a frequency identification, where frequency identification is indicative of a Frequency Division Multiple Access (FDMA) frequency value. Such a frequency identification parameter is optional as it is needed only for current GLONASS and/or near-future GLONASS (e.g., GLONASS-M) satellites. Hence, utilization of the frequency identification parameter maybe unnecessary and therefore, not included/not linked when considering next generation GLONASS satellites, e.g., GLONASS-K satellites. Additionally, signals supported by particular global positioning system (GPS) satellites can be indicated with the use of generic satellite identification.