Direction Finders Using Radio Waves TRIZ Cases

Passive radio frequency signal mediators collect Layer 2 measurement data to determine precise indoor locations, overcoming GPS signal unavailability.

Segmenting direct and multipath signal components to improve positioning accuracy while reducing false alerts from environmental reflections.

A very far-field communication system relays tag queries through mobile devices to extend wireless range.

Antenna gain tables compensate for limited signal data in two-point positioning, resolving the trade-off between cost and precision without complex hardware.

Estimates mobile station velocity using time-frequency signal processing and geographical databases for precise location tracking.

Remote autocorrelation extracts timing parameters from electromagnetic signals, reducing data transmission volume while maintaining location accuracy.

Local devices measure received signal strength from target access points to calculate positions via trilateration, eliminating reliance on external databases.

Selecting beacons with overlapping coverage areas reduces computational complexity while maintaining accurate location estimation.

Mobile location measuring units detect wireless device signals to determine positions via time difference of arrival and angle of arrival measurements.

A transmitter area determination system segments signal strength data into distinct time periods to estimate location and define presence areas.

Quantifying remote sensor noise through indirect navigation measurements improves tracking accuracy without requiring hardware consolidation.

A location augmentation circuit combines last known reliable position with rate sensing data to establish valid fixes.

A location-aware mobile policy enforcement system verifies source authorization to associate device policies with specific physical areas.

Sharing target location errors between sensors updates position estimates via a Kalman filter, reducing navigation errors when GPS is jammed.

Generalized error distributions model skewed multipath errors in position estimation, improving accuracy over weighted least squares.

A modular sensor network merges RF, EO/IR, and radar modules into a unified system for accurate object detection.

Carrier phase unwrapping resolves ambiguity errors from Doppler shifts and frequency variations, enabling accurate positioning in GPS-denied environments.

Single portable sensor moves sequentially to collect data, eliminating multi-sensor synchronization needs while maintaining measurement precision.

User equipment reports beam lock compliance to resolve measurement precision versus adaptability contradictions in 5G positioning.

A signal map uses unsupervised learning to relate locations to wireless signal values.

An autonomous server manages geo-referenced fault data from vehicles to update network databases without human intervention.

A positioning server selects the shortest transmission path between entities to calculate terminal location using configured signal resources.

A Wide Area Sensor Network uses software defined radios to detect and locate interference sources across wide frequency ranges.

A tracking module stores a user-defined private ID locally to send anonymous location data without exposing identity.

Integrating lenslets with antenna elements eliminates air gaps, improving impedance matching and radiation collection efficiency.

Delay-Doppler processing discriminates line-of-sight signals from multipath reflections to improve geolocation accuracy.

Segmented master and slave stations synchronize location references to detect user device positions, eliminating GPS signal weakness indoors.

A hybrid navigation system switches between GPS and indoor sensors to determine device position.

A compact omni-directional antenna uses a dielectric slit to generate uniform radiation patterns independent of device orientation.

A polyhedron receiver with multiple surfaces determines optimal positioning for radio waves passing through scatterers.

A position calculating apparatus selects reliable orientation data from GPS or self-contained sensors to compute movement angles.

A wireless terminal location estimation system analyzes electromagnetic signal traits to generate probability distributions for precise positioning.

Multiple base and rover antennas average corrections to reduce multipath errors and improve positioning accuracy for moving platforms.

A vehicle positioning apparatus uses IR-UWB beacon nodes to determine relative positions through synchronized signal transmission and time-of-flight measurement.

A location optimization system processes measurement data within a specific time window to synchronize base station timing and refine position estimates.

Asynchronous beacon transmission prevents signal collisions, enabling accurate indoor localization via unique signal vectors.

Segmenting measurements with clock phase offsets improves precision without increasing hardware complexity or power consumption.

Beacon transmitters transmit unique signals received by mobile devices to determine location, reducing infrastructure costs and power consumption.

A networked system of systems approach fuses energy measurements from multiple RF sensors to compute geolocation data.

Event-driven ping rate adjustment reduces unnecessary transmissions to extend battery life while maintaining accurate asset location data.

A detection device uses digital signal processing to calculate precise direction and distance to satellite radio beacons.

A mobile station embeds base station delay measurements into its initial location-based service request message to enable immediate positioning system processing.

A large mobile unit tracks a smaller object to provide precise world coordinates, resolving the trade-off between tracking precision and equipment weight.

A covariance-matrix linear least squares estimator improves mobile terminal location accuracy through systematic reference fixed terminal selection.

A probe with field generators and sensors assesses magnetic field distortion levels.

A controller partitions excavation work cycles into segments by comparing current tool speed against recorded maximums.

Rotating directional antennas detect target azimuth angles to resolve signal interference from multiple targets at identical bearing angles.