Iteratively recalibrates beam stabilization direction to reduce deterministic high-order angle estimation errors in wideband phased array systems.
A management apparatus uses sensor data from livestock to generate search information for locating specific animals.
A time-of-flight camera calculates distance corrections by comparing measured reference object distances against known coordinates.
An Iridium receiver calculates position and velocity using space vehicle signals.
SIM card program detects mini base station identifiers to determine mobile phone location without full network connection.
Processor fuses inertial measurements and image features to correct IMU drift errors.
Differential round trip time measurements enable client devices to determine indoor location without precise RF delay calibration, reducing power consumption.
Grouping electromagnetic signal sources reduces computational burden while correcting systematic errors from non-uniform source distribution.
Automated trilateration eliminates manual marker encoding, reducing implementation time while maintaining location accuracy within plus or minus 10 cm.
Extended Least Median Error algorithm filters gateways with heavy multipath delay to compute mobile device position.
Correlating passive acoustic signals across multiple propagation paths to estimate underwater target range and depth.
Dual reference signals enable network entities to monitor ML positioning accuracy against ground truth metrics without continuous high-power GPS usage.
RF antenna diversity modules measure round trip time to determine six degrees of freedom, eliminating external sensors.
A distributed sensor network determines mobile device positions using integrated RF receivers and localization engines.
A Kalman filter updates navigation states using delta range innovations to maintain signal integrity.
A generic positioning protocol unifies messaging structures across wireless access types.
A multi-antenna receiver separates free-space waves from reflections using deconstructor logic to identify the shortest signal path.
Adaptive fingerprint matching resolves radio environment instability by dynamically adjusting serving cell parameters for reliable localization.
Segmented offline radio maps download only tiles covering unreliable GNSS zones, reducing unnecessary data volume while maintaining positioning accuracy.
A positioning system selects devices for data collection based on performance targets to improve accuracy.
Positioning terminals calculate arrival time differences from wireless UWB transmitters to remove synchronization errors and improve precision.
Terminal devices report target beam direction and energy change data to network-side equipment for precise location tracking.
A GPS receiver calculates pseudo-ranges using stored almanac data to determine location.
Location server coordinates PRS measurements from multiple secondary cells to determine UE position.
The system evaluates satellite signal quality to renew stored altitude data, reducing memory burden while maintaining accurate positioning under bad conditions.
A BLE beacon system detects user entry and exit events by measuring Received Signal Strength Indication values from multiple spatially separated receivers.
A dead reckoning inclinometer compensates accelerometer bias and yaw angle rate to maintain altitude measurement precision without continuous GNSS signals.
A location server uses ultra wideband measurements as reference data to calibrate non-UWB technologies at specific grid locations.
A hybrid infrared and ultrasonic real-time location system calculates distances via signal time-of-flight to determine tag positions.
A positioning tag compares current and previous electromagnetic signal strength values to determine when position calculations are necessary.
Segmenting positioning signal measurements by antenna ID preserves local features, enabling AI models to learn specific characteristics for higher accuracy.
Passive ADS-B squitter reception reduces RF spectrum utilization and interference in densely populated areas.
A vehicle fuses sensor data with wireless ranging signals from line-of-sight neighbors to determine precise relative positions.
A location server aggregates wireless device positioning metrics to characterize local GNSS environments and generate assistance data.
A geolocation receiver processes multi-wavelength signals from distributed emitters to determine position.
A tile-based method reduces access point location data by quantizing and indexing geographic regions to conserve memory.
Tracking multipath component evolution resolves urban signal ambiguity, improving positioning accuracy without new infrastructure.
Network nodes transmit positioning assistance data ahead of expected measurement start times to mobile terminals.
A location awareness apparatus corrects current vehicle position using satellite and nearby device information.
Pre-calculated signal strength directional derivative fields validate RTT measurements, discarding multipath noise to improve indoor positioning accuracy.
Specifying measurement limits prevents resource waste when positioning devices fail or lose data.
Zone segmentation with transmit-only tags eliminates multilateration hardware complexity while maintaining accurate location tracking.
A method calculates miss distance between moving vehicles by analyzing the slope characteristic of received Doppler signals over an observation period.
Secure User Plane Location terminal exchanges network capability data with a location server to determine position estimates.
Cross-correlating correlated and uncorrelated speaker channels with microphone input estimates position without dedicated test signals.
Combining TDOA and TW-TOA techniques across different signaling technologies resolves interference issues while reducing power consumption.
A wireless localization system computes real-time output parameters independent of transmission power to estimate device location within a volume.
A detection system compares satellite and terrestrial signals to identify inconsistent location data.
A mobile computing device switches between network-assisted and standalone GPS location determination modes.