Abstract: A target tracking system which tracks targets using a plurality of virtual particles includes a detector which detects the targets based on a signal wave from the targets and outputs a detected results as a detected target positions, a fluctuation distribution unit which generates fluctuations arising from at least disturbances and measurement errors, and an estimation unit which sets virtual particles based on the fluctuations and estimates a true target positions based on the detected target positions.

Abstract: Technology to determine a satellite's orbit is disclosed. In an example, an orbital determination (OD) device for a satellite operable to determine a satellite's orbit can include computer circuitry configured to: Receive a single global positioning system-generated (GPS-generated) signal from a GPS satellite; decode an ephemeris of the GPS satellite from the GPS-generated signal; determine a Doppler shift and a Doppler trend of the GPS-generated signal; and generate a Doppler-GPS OD using the ephemeris of the GPS satellite and the Doppler shift and the Doppler trend of the GPS-generated signal fit to Kepler orbital elements of an orbit model.

Abstract: The invention, in some embodiments, relates to the field of global navigation satellite systems, and more particularly to the field of methods and devices for improving accuracy of position determination by receivers of global navigation satellite systems. Some embodiments of the invention relate to methods for generating a three-dimensional (3-D) representation of an urban area by a receiver of a global navigation satellite system using blocked lines of sight to satellites of the system. Additional embodiments of the invention relate to methods for transmitting a three-dimensional (3-D) representation of an urban area by a receiver of a global navigation satellite system for improving calculation of location by the global navigation satellite system receiver.

Abstract: An Antenna Mode Steering (AMS) method in a signal receiving apparatus using at least one antenna is provided. The method includes measuring a received signal quality of a signal received through the at least one antenna for each of antenna modes available in the signal receiving apparatus, and selecting a specific antenna mode from among the antenna modes as an antenna mode to be used in the signal receiving apparatus based on the measured received signal quality.

Abstract: The present invention discloses a wireless electronic device including an adaptive antenna device, a wireless communication module and a processing unit. The adaptive antenna includes a horizontal antenna module arranged to transmit data in a plurality of certain horizontal directions and a vertical antenna module arranged to transmit data in a plurality of certain vertical directions. The processing unit enables the wireless communication module to enable the horizontal antenna module to scan signals along the certain horizontal directions to obtain a horizontal scan result when the wireless electronic device is powered up. The processing unit further determines whether at least one electronic device is available in at least one of the certain horizontal directions according to the horizontal scan result, and enables the horizontal antenna module and the vertical antenna module to directionally transmit data to the electronic device in the certain horizontal directions.

Abstract: A terrestrial positioning and timing system (TPTS) comprising a ground segment and user segment is disclosed that is comprised of a spread-spectrum based range and bearing reference signal, with respect to a reference time, transmitted by an antenna over a broad region of space; and a spread-spectrum based bearing variable signal with bearing specific modulation referenced to a reference time, transmitted using a scanning antenna over a spatial region of space that is more narrow than the spread-spectrum based range and bearing reference signal transmission spatial area. Various embodiments enable the TPTS station and user to support various position, velocity or time services. Most notably, an embodiment with a single TPTS station, active interrogation/transponder reply, and data delivery subsystem can provide a position, velocity, and time solution for the user. Additional embodiments disclosed provide varying levels of user solutions to include bearing, position, velocity, or time.

Abstract: A system and method for determining transmission delay in a communications system. In some embodiments, satellite positioning information may be received for a mobile device and enhanced cell identification (E-CID) positioning information received for the mobile device. A location of the mobile device may be determined as a function of the received satellite positioning information, and transmission delay between a node serving the mobile device and an antenna serving the mobile device determined as a function of the received E-CID positioning information and the determined location of the mobile device.

Abstract: Station for receiving satellite radio navigation signals having first wideband transceiver for receiving a specific signal transmitted by a transmitter/receiver and extracting therefrom at least one user radio navigation signal, a first centralized configured for determining a measurement of pseudo distance and a centralized calculator for calculating navigation information (PVT), the reception station having a first reference channel for receiving radio navigation signals having a directional antenna for forming a channel, a second processor for processing the radio navigation signal received by the directional antenna for forming a channel and a calculation unit that is suited to performing an improvement in reliability, an integrity check and authentication of the navigation information (PVT).

Abstract: A multi-beam shape supplementary device for an antenna system for mobile communications includes a site-sharing adapter in the form of a primary adapter. The site-sharing adapter comprises at least two primary terminals for connecting at least two primary control apparatuses. The plug and/or terminal configuration or terminal occupation at the primary terminals are terminal-compatible with the terminals on the coupling terminal side of the site-sharing adapter. The pin or socket terminals provided for the bidirectional signal transmission in the site-sharing adapter are connected to a terminal pin or a terminal socket, provided for the bidirectional signal transmission, of the coupling terminal so as to form a bidirectional signal transmission path. The bidirectional transmission path is configured in such a way that the differentiated communications signals at the at least two primary terminals are converted into frequency-modulated signals.

Abstract: A locating device locates a source emitting a short-duration high power microwave pulse. The locating device contains at least three separately disposed receiving antennas that are not disposed on a line, each with an associated detection device for detecting the point in time of the reception at the antenna of the high power microwave pulse. At least one short time measurement device is provided for determining at least two time differences between the points in time of reception of each two of the detection devices. A computing device is provided for calculating a location of the origin of the high power microwave pulse based on at least two of the measured time differences.

Abstract: A method for reducing multipath when determining a location of a stationary or near stationary position, includes receiving a signal from an antenna moving continuously with respect to the stationary or near stationary position, the signal including a multipath component, processing the received signal including the multipath component, wherein multipath error in the received signal is reduced during the processing and determining a location of the stationary or near stationary position based on the processed received signal with the multipath error reduced.

Abstract: A receiver of satellite signals serving for location (GNSS) adapted to be fixed on a support having at least one antenna able to receive the satellite signals serving for location. The antenna includes at least two mobile phase centers for determining a location on the basis of the satellite signals received, and a displacement device adapted for displacing the phase centers, for selecting one of the phase centers and for determining a position of the selected phase center with respect to the support.

Abstract: A server management system disposes two wave generators on a rack and disposes a wave sensor on a server, wherein each of the wave generators is capable of emitting an omni-directional wave and a directional wave. When the wave sensor senses the omni-directional wave and the directional wave at different time points, one of the server and a host device is capable of determining two angles of the wave sensor relative to the two wave generators according to time differences and then calculating a position of the server located in the rack according to the two angles.

Abstract: Determining a location estimate of a wireless communications device can depend on the dynamic and/or static state of the device. Compensation processing is applied to a location estimate (or to information from which such an estimate is derived, in use) if required, given the dynamic and/or static state of the device.

Abstract: Systems, methods, and apparatuses for a satellite navigational system receiver to select a subset of tracking satellites from the satellites in view are described. In one method, after selecting the satellite with a highest elevation, satellites are selected for the tracking subset by searching the sectors of an azimuth plane map in sequence.

Abstract: Various embodiments of a millimeter-wave wireless point-to-point or point-to-multipoint communication system which enables determining preferred directions of transmissions, and transmitting in such preferred directions without routing radio-frequency signals. The system comprises a millimeter-wave focusing element, multiple millimeter-wave antennas, and multiple radio-frequency-integrated circuits (“RFICs”). In various embodiments, preferred directions are determined, and millimeter-wave beams are transmitted in the preferred directions.

Abstract: A multi-standard GNSS receiver, handle different global navigation satellite systems (GNSSs), determines with respect to a current time instant, the earliest broadcast timing based on corresponding satellite broadcast cycles for satellites in the different GNSSs. The multi-standard GNSS receiver acquires broadcast ephemeris at the determined earliest broadcast timing to determine its own first position. A search order is determined based on the corresponding satellite broadcast cycles and the current time instant. The multi-standard GNSS receiver may selectively utilize appropriate satellite receivers such as the GPS receiver and the GLONASS receiver to search for satellite signals based on the determined search order. Channels for different GNSSs are scanned to identify transmitting satellites based on the corresponding satellite broadcast cycles for ephemeris downloading. The satellite search is prioritized by comparing the current time instant with the corresponding satellite broadcast cycles.

Abstract: A computerized device for use with an object location system and method thereof is provided. The computerized device includes at least one processor in communication with a memory device, the memory device storing a quantity of programmable code having a plurality of processor-executable instructions. A communication element is connected between the processor and at least one monitoring unit. The at least one monitoring unit is positioned remote from the computerized device and a locating circuit substantially secured to an object intermittently communicates an omnidirectional signal to the at least one monitoring unit. A calculator is in communication with the processor. The calculator directs the processor to determine a duration of transmission time of the omnidirectional signal communicated from the locating circuit to the at least one monitoring unit directs the processor to calculate a location of the locating circuit using the determined duration of transmission time of the omnidirectional signal.

Abstract: Polynomial regression models are used to reduce errors in measurements of pseudorange between a GNSS satellite and a receiving station; for data compression by replacing a large number of measurements with a small number of coefficients of the model polynomial, optionally combined with modeling residuals; for extrapolating usefully accurate estimates of future range between the GNSS satellite and the receiving station; and for providing usefully accurate estimates of future coefficient values of the polynomial regression models themselves.

Abstract: A method of processing received satellite signals is provided. The method includes detecting frequency, power level, code phase and doppler frequency of a plurality of satellite signals and frequency and power level of a plurality of spurious signals. The plurality of spurious signals is ranked based on one or more ranking parameters. A first subset of the plurality of spurious signals which are ranked equal or above a threshold rank are processed through a plurality of notch filters and a second subset of the plurality of spurious signals which are ranked below the threshold rank are processed through a weeding filter.