Distance is estimated by switching phase pairs based on RSSI from two polarized vehicle antennas, improving blocked Bluetooth ranging accuracy.
Electromagnetic indoor positioning links mobile units to workpieces, cutting allocation errors and downtime in steel and sheet metal processing.
Ultrasound transducers track pig position through pipeline walls and enable faster communication than low-frequency electromagnetic methods.
Electromagnetic indoor tracking links mobile units to steel workpieces, cutting manual search time and improving process control accuracy.
A restricted confidence volume lets TCAS share lead-aircraft flight parameters for accurate wake vortex calculation without exceeding bandwidth.
Using reception phase from multiple subcarriers, this case resolves integer ambiguity to improve wireless positioning accuracy and reliability.
Harmonic energy ratios help vehicles estimate emergency sound source distance more reliably than amplitude alone under changing conditions.
Ultrasound proximity checks gate wake-on-voice activation to cut false triggers, save energy, and limit unauthorized responses.
An accelerometer integrated into the elevator door light grid uses door vibration profiles to identify the stopped floor more reliably.
Correlation with a simulated direct-plus-multipath signal improves radio target distance estimation when power-based methods are distorted by reflections.
Measure radio distance precisely from time of flight without phase sensing.
Directional training signals eliminate calibration sensitivity and device cooperation requirements for precise millimeter wave distance measurement.
A joint optimization method for beam selection and transmission resource partitioning in mm-wave networks.
Determines virtual frequency switching times via phase relationships, resolving wavelength-dependent ambiguity and reducing device complexity.
A measurement apparatus corrects radio wave phase data to account for support member distortion in large-scale antenna systems.
Interacting multiple model filtering estimates user equipment kinematics using range rate and range data to identify rogue drones.
A sound source detection system classifies acoustic characteristics using a multi-class SVM to estimate the position of approaching vehicles.
A payment terminal consolidates individual user requests into a single transaction to streamline processing.
A multi-device control system combines distance metrics with context-specific correction scores to identify the intended device for voice commands.
Integrating radar detection with navigation displays visualizes signal source proximity, resolving poor information clarity without adding device complexity.
Autonomous range filtering reduces radio resource consumption and isolates high-demand groups without additional signaling overhead.