A positioning system checks radio model data health by comparing measured signal strength values against stored reference indicators.
A distance measurement system uses a third trusted device to verify arrival times, preventing malicious devices from falsifying location data.
Bluetooth movement prediction distinguishes normal from abnormal passenger trajectories to eliminate invalid elevator call requests.
Access point detects terminal motion using location data to match action patterns, enabling dynamic connection switching for unauthorized movement detection.
Multilateration of surveillance packet arrival times determines vehicle position when GNSS signals degrade or become unavailable.
A method estimates moving object trajectories by comparing platform and object complexity values derived from angle measurements.
A receiving node cross-correlates radio signals with reference patterns to identify candidate time of arrival estimates.
Connected sensors exchange transaction data to merge location records, reducing computational costs and battery drain in sensor networks.
A distributed algorithm updates mobile agent positions using barycentric coordinates and neighbor data.
A self-supervised machine-learning model predicts 3D object locations using channel state information from wireless devices.
Pre-positioned cameras trigger automatic image capture via user location data, eliminating manual photography tasks and time loss during visits.
Crowd-sourced radio maps use trustworthiness metrics to filter unreliable data, resolving the trade-off between positioning accuracy and deployment time.
Determines absolute positions by anchoring calculated geometry to environmental constraints, eliminating costly anchor sensors.
Combining bit error rate with received signal strength creates a unique signature for accurate indoor positioning without GPS.
A wireless location measurement apparatus estimates radio channels in the frequency domain using pilot signals to extract propagation delay tab profiles.
Information management unit updates base station position data using signal strength measurements.
Asymmetric modulation of radar signals at a reflector distinguishes desired reflections from noise through irregular phase contributions.
Moving RF receivers along circular paths generates diverse phase measurements that average out multipath interference, reducing location estimation bias.
A relative position determination circuit tracks device movement using inertial sensors to store location deltas.
A magnetic signal source transmits low-frequency signals for mobile device positioning.
Combining correlation results from multiple signal sets improves location estimation accuracy in asynchronous wireless networks.
A position tracking system calculates new phase difference data from RF signals to identify candidate solutions.
Periodic transmission and intermediary processing resolve power consumption and data reliability contradictions in large-scale livestock tracking.
Segmenting carrier phase into integer and fractional components resolves ambiguity in cycle counting, enabling centimeter-level positioning accuracy.
Distributed RF collectors and dynamic cross ambiguity function processing estimate trajectories of moving targets without stationary platforms.
Location signal clustering and scoring algorithms associate mobile devices with households, resolving demographic data access gaps for targeted advertising.
A positioning system decodes direction identifiers from ultrasonic signals to calculate mobile unit coordinates.
A radio access network node maintains an SCCP connection using a timer in BSSMAP-LE messages to support Multilateration Timing Advance positioning.
Integrated system antennas perform phase-based ranging to determine peripheral device location, eliminating dedicated hardware complexity.
Segmented SBR, PTD, and ILDC modules compute radar signatures without massive databases to resolve processing time constraints.
Phase measurement calibrates signal time-of-flight distance systems, correcting fluctuations that cause meter-level errors in Bluetooth and UWB applications.
Tactical radios relay messages via beyond-line-of-sight waveforms, ensuring reliable communication when 5G cellular links face denial.
Wireless tags transmit signals to access points for real-time location detection, resolving GPS indoor signal loss.
A Bluetooth high-accuracy distance measurement system coordinates anchor point responses to a single ping for indoor localization.
A radar warning receiver system calculates incident power and aircraft position changes to determine movement within a threat beamwidth.
A location measurement apparatus classifies RSSI signals into three grades to calculate object range using two sensing nodes.
A synthetic aperture technique combines absolute and relative sensor data to enhance radio positioning precision through spatial signal processing.
Generating models mapping expected signal characteristics to resolve location tracking precision issues caused by objects with radiation impact.