摘要:
A method of operation of a hybrid navigation system includes: providing a peer-to-peer communication controller for communicating with a first vehicle; linking a second peer-to-peer communication controller for communicating between a second vehicle and the first vehicle; providing a communication and navigation controller for monitoring a regional network for the first vehicle or the second vehicle including storing saved route information; and preparing a first route history file for transferring from first vehicle to the second vehicle including providing the first route history file from the saved route information for displaying in the second vehicle when the regional network is not available.
摘要:
A Global navigation satellite-based systems (GNSS) enabled device, handling at least two of a plurality of sensors, collects GNSS measurements and navigation related non-GNSS sensor data. The collected navigation related non-GNSS sensor data is automatically formatted into a data format that is compatible with a format of the GNSS measurements. The formatted navigation related non-GNSS sensor data and the GNSS measurements are utilized by a single function to compute navigation information for the GNSS enabled device regardless of sensor configurations such as a cellular radio and/or a motion sensor. Measurement errors in the collected navigation related non-GNSS sensor data is estimated to determine measurement accuracy. The collected navigation related non-GNSS sensor data is selectively adopted, combined with the GNSS measurements, to compute navigation information by the single function based on the determined measurement accuracy. The computed navigation information may be utilized to calibrate sensor and/or sensor data when needed.
摘要:
In order to determine a temporal reference and/or a least one spatial reference, in a telecommunications system comprising a plurality of collection gateways (120-124) configured for transmitting beacons, for each beacon a device (110-111) performs: obtaining (502) current geolocation information for the collection gateway which has transmitted said beacon; obtaining (503) information relating to a communication technology used to determine said current geolocation; and obtaining (504) information indicating whether said current geolocation has been determined using internal means or using external means. The device then uses (509) the thus obtained information in order to determine the temporal reference for synchronising, in time or frequency, said device and/or the spatial reference or spatial references in order to determine the geolocation of said device.
摘要:
A method is provided, which includes scanning at least one radio frequency identification (RFID) tag to obtain an identifier of the RFID tag; querying a database using the identifier of the at least one RFID tag to collect information about a location of the at least one RFID tag; determining a bias of a vehicle relative to the location of the scanned at least one RFID tag; and calculating a location of the vehicle based on the bias and the location of the at least one RFID tag.
摘要:
According to an aspect of the invention, there is provided a control system for controlling a projectile (4), the control system comprising: a plurality of transmitters (210), wherein each transmitter of the plurality of transmitters is arranged to transmit an electromagnetic wave from a transmission position; a receiver associated with the projectile, the receiver being arranged to receive a plurality of electromagnetic waves (21) transmitted from the plurality of transmitters; a controller associated with the projectile, the controller being arranged to: determine at least one of a position, a velocity or an acceleration of the projectile from transmission positions of the plurality of transmitters and Doppler measurements derived from the received plurality of electromagnetic waves; and generate a control signal for performing an action with the projectile depending on the determined at least one of position, velocity or acceleration of the projectile.
摘要:
Systems and methods 600 for navigating an aerial vehicle 100 are provided. One example aspect of the present disclosure is directed to a method 600 for navigating an aircraft. The method includes receiving 602, by one or more processors 704, one or more first geographic coordinates via an interface configured to receive geographic coordinates from a satellite transmission 106. The method includes receiving 604, by the one or more processors 704, one or more second geographic coordinates via an interface configured to receive geographic coordinates from a ground transmission 104. The method includes determining 606, by the one or more processors 704, that the one or more first geographic coordinates and the one or more second geographic coordinates are inconsistent. The method includes updating 608, by the one or more processors 704, a flight plan using the one or more second geographic coordinates when the one or more first geographic coordinates are inconsistent with the one or more second geographic coordinates.
摘要:
The invention relates to a method (100) carried out by a navigation satellite system (NSS) receiver or a processing entity receiving data therefrom, for estimating parameters useful to determine a position. The NSS receiver observes NSS signals from NSS satellites over multiple epochs. A first filter (55), called "timely estimator", and second filter (57), called "precise estimator" and delayed with respect to the timely estimator (55), are operated (s120). The estimators use state variables, and make use of NSS signals observed by the NSS receiver or information derived therefrom. The precise estimator (57) further computes its state variable values based on observations that are not derived from NSS signals observed by the NSS receiver. The values of some of the state variables computed by the timely estimator are recurrently replaced (s140) by values from the precise estimator. A corresponding system is also disclosed.
摘要:
In one embodiment, a method includes transmitting at a pre-determined polling frequency an activation signal waking from a sleep mode an application on a mobile computing device and causing the application to activate a location service of the mobile computing device for a pre-determined sampling duration. The pre-determined polling frequency and the pre-determined sampling duration are determined at least in part by detecting a movement of the mobile computing device. The method also includes receiving location data from the mobile computing device after the pre-determined sampling duration. The location data is responsive to a transmission signal.
摘要:
Ein Positionsbestimmungssystem, zur Bestimmung der Position eines Fahrzeuges in einem Innenraum, umfassend einen mit dem Fahrzeug beweglichen Bluetooth-Empfänger, eine Anzahl von im Innenraum verteilten Bluetooth-Sendern und eine Positionsbestimmungsvorrichtung, wobei die Positionsbestimmungsvorrichtung dazu eingerichtet ist, eine Absolutposition des Fahrzeuges durch eine Analyse des am Bluetooth-Empfänger empfangenen Signals der Anzahl von im Innenraum verteilten Bluetooth-Sender zu bestimmen, eine Relativposition des Fahrzeuges mittels Sensorwerten der Dynamik des Fahrzeugs zu bestimmen und eine Gesamtposition des Fahrzeuges als Kombination der Absolutposition und der Relativposition zu bestimmen.
摘要:
The present document relates to the reception of Binary Phase Shift Keying (BPSK) signals, as well as subcarrier modulated signals, such as Binary Offset Carrier (BOC) modulated signals. In particular, the present document relates to the determination of a Carrier-to-Noise ratio (or a Signal-to-Noise Ratio) of signals in a Global Navigation Satellite System (GNSS). A method (400) for determining an indicator of an amount of noise comprised within a received signal within a satellite communication network or a GNSS is described. The received signal has incurred a transmission delay, and is indicative of a carrier signal modulated with a modulating signal (101). The modulating signal (101) comprises an in-phase component and possibly a quadrature component. The method (400) comprises extracting (401) a received modulating signal from the received signal; determining (402) an estimate of the transmission delay based on the in-phase component of the modulating signal (101); generating (403) a prompt replica of the modulating signal using the estimate of the transmission delay; determining (404) a correlation, referred to as a prompt quadrature correlation, of the quadrature component of the received modulating signal and of the quadrature component of the prompt replica; and determining (405) the indicator of the amount of noise comprised within the received signal based on the prompt quadrature correlation.