Segmenting proximity detection into independent transmitter and receiver components resolves the trade-off between measurement precision and system reliability.
A distributed network of smartphones estimates target positions using received wireless identification signals and stored location data.
A base station reception unit detects positioning signals to compute terminal locations across wireless systems.
Distributing measured signal intensities across divided beacon distances builds the database without repeated calibration, reducing creation time and cost.
Phase ranging mitigation employs hop duplication and ADC DC offset correction to resolve RF interference in real-time location systems.
A satellite positioning receiver calculates position and velocity vectors using pseudo-random code sequences for continuous tracking.
Local user terminals relay beacon signals to a processor, resolving the lack of comprehensive over-the-air testing through the Cospas-Sarsat satellite network.
An on-chip gyrating circuit generates motion parameters to maintain position data when GPS signals are weak.
A portable ADS-B beacon transmits obstacle data via a monopole antenna.
A method coordinates transmission conditions between network entities and radio units to maintain consistent signal travel times.
Mobile devices broadcast peer discovery signal bits to indicate willingness for cooperative location determination.
A magnetic field measurement system determines volume configuration using transmitter and receiver arrays.
Weighted IQ data emulates RF sources, eliminating physical transmitter costs and licensing barriers.
Directional beam cones concentrate signal energy to resolve multipath propagation errors and improve positioning accuracy in non-line-of-sight environments.