A system and method for determining a position or a movable device is disclosed. The present system utilizes a movable device equipped with a locator device that has an antenna array such that it may determine the angle of arrival of a plurality of incoming beacon signals. In certain embodiments, the movable device is also able to measure its distance travelled. By knowing its distance moved and the angle of arrival from each beacon, the locator device is able to calculate its position as well as the position of each beacon. This procedure may be executed at regular intervals so that the movable device accurately determines its position.

A device for estimating a fixed position of a wireless communication is provided. The device comprises a radio connected to an antenna array, a memory and a process. The radio can receive a first signal transmitted from a first direction by the wireless communication device to the movable device, and a second signal transmitted from a second direction by the wireless communication device to the movable device. The processor can calculate a first angle of arrival (AOA) a second AOA. The processor can estimate the fixed position of the wireless communication device based on the first AOA, the second AOA, the first position and the second position.

A location service method for a wireless device includes: detecting one or more wireless access points; obtaining identification information and distance information of each of the one or more wireless access points; sending a location service request including the obtained identification information and the obtained distance information of each of the one or more wireless access points to a location service server; and receiving at least location information of the wireless device from the location service server.

A location information system may comprise a first mobile body; a plurality of base stations communicable with the first mobile body; and a location obtainer device mounted on a second mobile body and communicable with the plurality of base stations. The first mobile body may comprise a moving mechanism configured to move the first mobile body; and a first location obtainer configured to obtain first location information indicating a location of the first mobile body. Each of the plurality of base stations may comprise a base station location obtainer configured to obtain base station location information indicating a location of the base station. The location obtainer device may comprise a second location obtainer configured to obtain second location information indicating a location of the second mobile body.

A method for determining the location of mobile devices, comprising providing at least one mobile device and at least two access points distributed over two or more locations; noting the identity of access points the device is connected to over time; noting transitions between access points a device is connected to and identifying two or more access points as belonging to the same location if the mobile device transitions between connecting to said access points within a certain time period; allocating a first location to a group of access points to which a device transitions within said certain period of time and a second or further location to access points to which a device does not transition to from the first set of access points within said certain period of time; thereby associating groups of one or more access points with one or more locations, and determining the location of the device when it is subsequently connected to one of the located access points.

A method, a system, and a computer program product for localization of wireless devices. At least one of mapping and wireless data describing a physical environment is received. The physical environment includes one or more wireless access points. Using the received mapping and/or wireless data, a location of each of the wireless access points is determined. Using the determined location of the wireless access points, one or more wireless devices positioned in the physical environment are located.

Systems and methods for inertial navigation aided by signals of opportunity (SOOP). One system includes a network operations center (NOC), a reference station, and mobile user equipment. Another system includes a NOC and user equipment without a reference station. In the latter system, the NOC comprises an antenna, a NOC receiver that generates SOOP data derived from SOOP, a computer system that generates SOOP source location/ephemeris data and inter-source clock bias data based on SOOP data generated by the NOC receiver, and a communication device to broadcast the data. The user equipment comprises an antenna, a navigation receiver that generates SOOP data derived from SOOP detected by the antenna of the user equipment, and a navigation computer system that calculates a navigation solution, including a SOOP-derived estimated position of the user equipment, based on SOOP source location/ephemeris data and inter-source clock bias data broadcasted by the NOC and SOOP data generated by the navigation receiver.

A method is disclosed that includes obtaining one or more pieces of spoofing information indicative of a data set enabling positioning based on radio signals sent by a respective radio node. The data set is further indicative of one or more parameters based on which said positioning is performed and/or controlled and which is considered to be at least partially unexpected. The method further includes aggregating spoofing information based on the one or more parameters of the respective data set of the one or more pieces of spoofing information; and providing at least a part of the aggregated spoofing information for usage in a positioning. A corresponding apparatus, computer-readable storage medium and system are also disclosed.

A computer system includes a memory and a processor. The processor executes instructions to perform steps that include receiving a message from an asset tracking device, the message comprising position information for the asset tracking device and a traffic control device type for a traffic control device that the asset tracking device is attached to. The processor uses the received message to determine a road that the traffic control device is positioned on and a location of the traffic control device along the road.

Anchor base stations are arranged around an area in which positions for radio transmitter tags are to be determined. The anchor base stations have known locations, and the location of an intermediate base station added to the system is determined by: arranging the intermediate base station between first and second anchor base stations; determining, based on propagation-delay measurements of a signal emitted by the intermediate base station and using the global time reference a first calculated distance between the first anchor base station and the intermediate base station, and a second calculated distance between the second anchor base station and the intermediate base station (BSI5); obtaining an elevation indicator specifying whether the intermediate base station is located in level with, above or below the common plane; and determining the location of the intermediate base station based on the first and second calculated distances and the elevation indicator.