Direction Finders Using Radio Waves TRIZ Cases

Processing multipath signals via time difference of arrival analysis to map structures in cluttered environments where direct line-of-sight is obstructed.

A mobile device establishes a virtual perimeter to monitor signal strengths and transmit location updates only when moving outside the boundary.

Radar tags detect transmitted pulses to pinpoint mobile phone locations indoors, resolving GPS limitations.

A mobile station database stores cellular identifications and position data to guide satellite signal searches.

A wireless sensor network estimates distance between devices and reflectors using transmitted and reflected electromagnetic signals.

A cooperative wireless relay network performs two-way ranging using time-of-arrival information to determine target positions.

Recording association requests across multiple access points infers mobile unit location, denying unauthorized access outside designated service areas.

An assisted global navigation satellite system uses Wi-Fi fingerprinting data to resolve indoor positioning accuracy issues caused by signal interference.

Virtual transmitted signal waveform correlation resolves measurement precision errors from noise and interference in wireless geolocation.

Feedforward data flow processes radar pulses through dedicated filters to bypass Von Neumann memory bottlenecks and enable real-time tracking.

A dual mode personal locator beacon transmits signals at low power to local stations and high power to satellites.

A vehicular system uses a directional antenna array to detect radio signals from nearby devices and determine their heading for collision prediction.

A computing system processes multi-parameter data from distributed monitors to pinpoint jammer locations, restoring GPS service reliability.

Encoding position and motion data into reference beacon signals eliminates separate data paths, resolving bias error estimation complexity.

Overhearing access points record probe-ACK exchanges to compute distances, reducing network traffic while maintaining localization accuracy.

Spectral compression beacons process RF signals to determine location, resolving weak GNSS signal attenuation in obstructed environments.

Millimeter wave narrow beamforming achieves lane-level positioning accuracy within one meter by matching received signal strength to pre-stored map data.

A Link 16 geolocation method uses jamming noise amplitude and phase samples to determine hostile source positions.

A regional positioning method uses signal strength to recognize target locations within a wireless sensor network.

A modulated backscatter RFID reader calculates tag distance by analyzing phase relationships in reflected signals.

A positioning system leverages identification and signal data from existing wireless access points to determine terminal location within indoor spaces.

Cyclic range search architecture reduces computational complexity in low probability of detection receivers.

Adjusting time-of-flight measurements with correction factors resolves distance calculation errors caused by latency and interference.

A distributed sensor network measures complex electromagnetic field strength and phase values to determine transmitter location.

A location estimation method combines primary signal data with secondary antenna path loss information to refine device positioning.

A wireless node apparatus calculates its position using geometric features from known mobile nodes.

A positioning system measures time of flight on reflected ultra wideband signals to locate wireless nodes.

Segmenting space into uniform regions enables accurate modeling of legal and physical restrictions without sacrificing computational efficiency.

A vehicle inclination detecting device uses orthogonal detection on alternating radio wave signals to compute phase differences for precise angle measurement.

Four-receiver tetrahedral arrays resolve multipath interference and improve location precision for wireless terminals within defined local spaces.

Spatial discretization aggregates beacon data into globs to estimate positions, resolving accuracy issues caused by pathological beacons.

A collaborative positioning system estimates beacon locations using spatial relationships among neighboring beacons.

Communication processing device overlaps intermediate frequency signal with carrier wave to extract phase difference from reflected waves.

A graphical user interface displays bandwidth bearings by visually discriminating signals from background noise using quality metrics.