73 results about "Hybrid positioning system" patented technology

The disclosed subject matter relates to a method for determining a Dilution of Precision Metric (DOP) with less than four satellites in a hybrid positioning system. In some embodiments, the method includes determining an initial position estimate of a device using a non-satellite positioning system, obtaining satellite measurements from less than four satellites, wherein the measurements include each satellite's position with respect to the initial position estimate, constructing a geometry matrix corresponding to the measurements from the less than four satellites using each satellite's position and the initial position estimate, multiplying the geometry matrix by its transpose to construct an H matrix, determining an inverse of the H matrix, and determining the DOP based on a sum of the diagonal elements of the inverse H matrix. In some embodiments, the non-satellite positioning system is a WLAN positioning system.

This disclosure describes a system and method for refining a WLAN-PS estimated location using satellite measurements. In some embodiments, the disclosure relates to a method of determining the location of a WLAN and satellite enabled device by using two or more satellite measurements to refine an initial WLAN based location determination. The method can include estimating a position of the WLAN and satellite enabled device using a WLAN positioning system, gathering satellite location measurements from at least two satellites, determining an uncertainty area around the WLAN location estimate based on the expected error of the WLAN location estimate, wherein the uncertainty area has a plurality of possible location solutions, and determining the device location estimate inside the WLAN location uncertainty that best satisfies the satellite measurements.

This disclosure describes methods and systems for improving the accuracy of expected error estimation in a hybrid positioning system. In some embodiments, the method of determining an expected error in a location determination of a WLAN and satellite enabled device can include determining a WLAN location estimate and an expected error estimate for the WLAN location estimate, obtaining measurements from at least two satellites, and determining the expected error of the location determination by evaluating the consistency of the satellite positioning system measurements to the WLAN positioning system location estimation.

This disclosure describes methods and systems for stationary user detection in a hybrid location system. In some embodiments, the method for determining whether a satellite enabled device is stationary by measuring the Doppler frequency of received satellite signals can include acquiring satellite measurements from at least two satellites, wherein the satellite measurements include Doppler frequency measurements, acquiring a rough estimate of location of the satellite enabled device and calculating an internal frequency offset of satellite enabled device.

This disclosure describes systems and methods for using environmental information in a hybrid positioning system. Some embodiments relate to a method for determining the position of a WLAN and satellite positioning system enabled device using characteristics of the environment in which the device is located, the method can include detecting WLAN APs in range of the device, obtaining environmental characteristics from a reference database based on the WLAN APs detected by the device, and determining whether to use the WLAN or satellite positioning system based on the environmental characteristics.

This disclosure describes a method and system for determining position using a WLAN-PS estimated position as an initial position. In some embodiments, the method can include calculating a WLAN position estimate of the WLAN and satellite enabled device and using the WLAN position estimate as an initial position in satellite position system to determine the location of the WLAN and satellite enabled device.

The present disclosure relates to a method for determining the position of a WLAN positioning system (WPS) and satellite positioning system (SPS) enabled device. The method can include determining an initial WPS position of the device using WPS, calculating an error region around the initial WPS position of the device, dividing the error region into a plurality of points, obtaining satellite measurements from at least two satellites in view of the device, determining a variation in a receiver clock bias for each point within the error region based on the satellite measurements from at least two satellites, selecting the point with the lowest variation in the receiver clock bias, and determining whether or not to use the point with the lowest variation in receiver clock bias to refine the initial WPS position of the device.

This disclosure describes a system and method for using a satellite positioning system to filter WLAN access points in a hybrid positioning system. In some embodiments, the method can include detecting WLAN APs in range of the WLAN and satellite enabled device, obtaining satellite measurements from at least two satellites to provide a plurality of possible satellite locations of the device, and providing a weight for each AP based on the distance from the WLAN APs to the possible satellite locations of the device.

The disclosed subject matter generally relates to hybrid positioning systems and methods, more specifically, systems and methods of integrating a wireless local area network (WLAN) based positioning system (WLAN-PS) and a satellite positioning system (SPS) to improve accuracy of location estimates by selecting the best set of measurements from both systems.

The disclosed subject matter generally relates to hybrid positioning systems and methods and, more specifically, systems and methods of detecting moved WLAN assess points using a wireless local area network based positioning system (WLAN-PS) and a satellite-based positioning system (SPS) with at least two satellites measurement.

A device and method for determining and automatically transmitting a geographic location of a wireless alarm device during a potential emergency utilizing enhanced wireless communication and position location systems. In one aspect, a wireless alarm device includes a smoke alarm interfaced with a wireless transceiver, configured to operate over a plurality of existing wireless telecommunications and position location networks. The wireless transceiver can be a cellular processor comprising multiple radio frequency bands and air interface standards with an integrated memory for storing emergency identification information. Another aspect includes an integrated assisted global positioning receiver and broadcast television receiver, configured to operate with global positioning systems and broadcast television positioning systems. In one mode of operation, upon sensing the presence of smoke, the wireless transceiver automatically transmits stored emergency identification information signals and a geographic location of the wireless alarm device to a dispatch center.

Methods and systems of hybrid positioning are provided for increasing the reliability and accuracy of location estimation. According to embodiments of the invention, the quality of reported locations from specific sources of location is assessed. Satellite and non-satellite positioning systems provide initial positioning estimates. For each positioning system relevant information is collected and based on the collected information each system is assigned appropriate weight.

The invention discloses an ultra-low power consumption indoor and outdoor hybrid positioning system. The system comprises a plurality of iBeacon base stations which are arranged indoors and broadcast general unique identification codes through Bluetooth by preset signal intensities; a positioning node, wherein the positioning node is arranged on a moving object to be positioned, periodically monitors the plurality of general unique identification codes and the corresponding signal intensities around the positioning node through Bluetooth and outputs the monitored result by means of LoRa; a wireless gateway used for receiving the plurality of general unique identification codes and the signal intensity information and outputting the plurality of general unique identification codes and the signal intensity information through a mobile network; and a cloud platform used for receiving the plurality of general unique identification codes and the signal intensities and determining the latitude, longitude and indoor position of the moving object. According to the invention, by adopting the iBeacon technology based on Bluetooth indoors and adopting a GNSS positioning technology outdoors, precise positioning and seamless switching are realized, low power consumption and long distance transmission is realized by means of the LPWAN gateway, the positioning precision is high, the power consumption is low, the distance is long, and the system is suitable for large-scale popularization and application.

Systems and methods are provided for selectively invoking a positioning system in mobile device control applications. A processor receives a measurement representative of wireless networks in an environment of a mobile device, and evaluates the first measurement using first criteria. In response to determining that the first measurement satisfies the first criteria, a positioning system is invoked to receive a position measurement of the mobile device, and the operation of the mobile device is controlled according to the position measurement. When the first measurement does not satisfy the first criteria, the processor invokes the positioning system at a later time.

The invention provides an indoor hybrid positioning system and an indoor hybrid positioning method based on inertial positioning and VLC for a mobile phone. A downlink chain comprises a visible light downlink sending module and an inertia and VLC hybrid positioning module, wherein the visible light downlink sending module comprises a downlink sending processor and a visible light LED; the inertia and VLC hybrid positioning module comprises a VLC positioning receiver, a communication interface as well as a gyroscope, an acceleration sensor and an APP module which are arranged in the mobile phone. An uplink chain comprises a positioning data sending module and a positioning data receiving module, wherein the positioning data sending module comprises a Bluetooth module of an intelligent mobile phone; the positioning data receiving module comprises a terminal Bluetooth receiving module. According to the indoor hybrid positioning system and the indoor hybrid positioning method, integrated hardware equipment in the current intelligent mobile phone can be fully utilized, a positioning device is simplified, so that the positioning device is easy to operate and convenient to carry everyday; meanwhile, the push of relevant information about the positions can be realized by utilizing a target position; the system is wide in application, high in practicability and can be effectively applied in public places such as supermarkets and libraries in future.

The invention relates to a hybrid positioning method and a hybrid positioning system for moving objects. The hybrid positioning method adopts the GPS (global positioning system) positioning technology, the mobile 3G positioning technology and the radio frequency identification (RFID) positioning technology, a geographic position guide method adopts a camera to acquire the feature information of the surrounding environment, and the method and the system are comprehensively applied to accurately determine and acquire the current position of a moving object and the feature information of the environment surrounding the moving object, offering a geographic position and environmental feature basis in order to rapidly find the moving object. The invention not only overcomes the defects of a single positioning method, but also can acquire and transmit environmental feature information to target users, and therefore has a broad application prospect.

The invention provides an indoor and outdoor hybrid positioning method, which comprises the steps of: setting wireless hotspots at an outdoor preset position, and acquiring outdoor absolute coordinate information of the preset position through a GNSS static measurement tool; detecting whether a mobile terminal enters a radiating range of the wireless hotspots; if so, judging whether the number of current GNSS available satellites acquired by the mobile terminal is less than a preset value; and if so, setting a final outdoor coordinate value of the mobile terminal as an initial value, utilizing the GNSS available satellites and the wireless hotspots for hybrid positioning, and being capable of obtaining an effective positioning result under the condition that the sum of numbers of the wireless hotspots and the available satellites is greater than or equal to 4. The indoor and outdoor hybrid positioning method can solve the problem that GNSS positioning is unstable since satellite signals are blocked by crowded tall buildings in city and the satellite signals received by subordinate users under many tall buildings are weak, and improves user experience. The invention further provides an indoor and outdoor hybrid positioning system.

Methods and apparatuses for a mobile station to obtain a position fix using synchronous hybrid positioning and asynchronous hybrid positioning techniques are described. In one embodiment, a wireless communication apparatus may transmit a request to a mobile station for timing reference information. The apparatus may be configured to receive the timing reference information, first timing measurements from a first positioning technology, and second timing measurements from a second positioning technology. The apparatus may identify whether the mobile station is capable of supporting synchronous hybrid positioning based on the timing reference information. If it is synchronous hybrid capable, then the apparatus may then establish a position fix for the mobile station using a synchronous hybrid positioning technique that involves relating the first and second timing measurements to a common time scale based on the timing reference information. If it is not synchronous hybrid capable, then the apparatus may establish a position fix for the mobile station using an asynchronous hybrid positioning technique wherein the time scales of the first and second timing measurements are not interrelated.

The invention relates to a method for selecting the hybrid positioning or timing mode of a navigational satellite, comprising a satellite signal state determining step: obtaining the current satellite signal state of a satellite navigation system A or B by a system, a single satellite navigation system selecting step: selecting the single satellite navigation system A or B for positioning or timing if the single satellite navigation system A or B meets the positioning or timing requirement, and a hybrid satellite navigation system selecting step: selecting the hybrid positioning mode of the satellite navigation systems A and B by the system if the single satellite navigation system A or B does not meet the positioning or timing requirement. By adopting the method, the hybrid double-mode satellite navigation reception device can reduce the power consumption of the system as mush as possible when the hybrid double-mode satellite navigation reception device works normally. The invention is suitable for double-mode or multi-mode hybrid satellite navigation reception devices including a GPS and big dipper second-generation satellite navigation system.

The invention discloses a mixed positioning system and a positioning method thereof. The mixed positioning system comprises a server and a terminal, wherein the server is communicated with the terminal, the terminal comprises a GSM (Global System for Mobile Communications) / CDMA (Code Division Multiple Access) subsystem, a GPS (Global Position System) subsystem, a ZIGBEE subsystem, an RFID (radio frequency identification devices) subsystem and a controller, wherein the GSM / CDMA subsystem, the GPS subsystem, the ZIGBEE subsystem and the RFID subsystem are connected with the controller. The mixed positioning system adopts the four subsystems of ZIGBEE, GPS, GSM / CDMA and RFID for realizing mixed positioning, fully utilizes the characteristics of the ZIGBEE of being precise in positioning and capable of being used indoors, and overcomes the defects that the GPS is not applicable to being used in buildings, and the positioning of the GSM / CDMA is not accurate.

The present disclosure relates to a method for determining the position of a WLAN positioning system (WPS) and satellite positioning system (SPS) enabled device. The method can include determining an initial WPS position of the device using WPS, calculating an error region around the initial WPS position of the device, dividing the error region into a plurality of points, obtaining satellite measurements from at least two satellites in view of the device, determining a variation in a receiver clock bias for each point within the error region based on the satellite measurements from at least two satellites, selecting the point with the lowest variation in the receiver clock bias, and determining whether or not to use the point with the lowest variation in receiver clock bias to refine the initial WPS position of the device.

The invention discloses a hybrid positioning method and a positioning system thereof. The hybrid positioning system comprises a mobile station (MS), a base transceiver station (BTS), a base station controller (BSC), a packet data service node (PDSN), a position determining entity (PDE), an application server (AS) and a mobile positioning center (MPC), wherein the MS is communicated with the BSC and the PDE through the BTS, the PDE is interconnected with the PDSN, and the PDE is communicated with the AS, the MPC and the BSC. The hybrid positioning method and the positioning system thereof disclosed by the invention provide a scheme for signaling interaction between the MS and the PDE based on a TCP / IP network so as to achieve the purpose of positioning. In the scheme, different positioning methods are adopted according to the environment of the MS so as to quickly and accurately acquire the position information of the MS.

The invention belongs to the technical field of space location and relates to a system and a method based on bluetooth and GPS (global positioning system) hybrid location. The system comprises a control end and a receiving end, wherein the control end is a mobile phone with bluetooth function and system software installing; the receiving end is arranged on a to-be-located object, and comprises a micro processor module, a GPS module, a GSM (global system for mobile) module, a bluetooth module and an acousto-optic module. The method comprises the following steps: performing short-distance bluetooth location, long-distance GPS location, and converting to short-distance bluetooth location from the long-distance GPS location. In order to overcome the problems that the existing single GPS location mode is poor in location precision, signals are easily shielded by a barrier, and the like, the system and the method based on GPS and bluetooth hybrid location are disclosed by utilizing the characteristics of no angle and direction limitation, strong penetrability and the like of a bluetooth signal. GPS is used for quickly locating at a long distance, and the bluetooth is used for accurately locating at a short distance, so that the location speed and accuracy are improved.

The invention discloses a two-dimensional positioning method for two base stations, and relates to the technical field of real-time positioning systems. The method comprises the following steps that the deployment position of a base station is set; the tag periodically sends broadcast messages to surrounding base stations, and the base stations measure the distance between the base stations and the tag through communication with the tag; and a calculating server calculates the actual position of the tag through two-dimensional positioning algorithms of the two base stations. The two-dimensional positioning method for two base stations reduces the number of base stations required by two-dimensional positioning of the deployment area, reduces the minimum requirement of three base stations totwo base stations, reduces the deployment cost, has low complexity and simple calculation algorithm, and reduces the processing performance requirement of the calculation server; and the system is good in robustness, the algorithm is mature and stable, and the method can adapt to various different actual scenes.