Direction Finders Using Radio Waves TRIZ Cases

Merges sparse active radar measurements with passive bearing data to maintain accurate target tracking during maneuvers without observer acceleration.

A satellite positioning system transmits time-synchronized signals using a central master clock and relay satellites.

Subdividing complex geofences into sub-regions reduces telecommunication costs by limiting onboard data traffic while maintaining real-time monitoring.

An alarm and location system uses an omnidirectional signal from a transceiver to calculate position, reducing false positives common in proximity sensors.

A dynamic filter adapts reporting criteria to aircraft parameters, reducing transmission frequency while maintaining tracking accuracy.

Transmitter position determination unit calculates location from signal timing differences, eliminating communication links between separate entities.

A bias compensator corrects aggregate elapsed times from multiple beacons to generate intersecting position curves for vehicle location.

A satellite positioning receiver gathers location data from multiple sources to derive a reliable seed.

Geometric algebra resolves antenna phase vectors to locate the shared origin, reducing noise sensitivity compared to linear coordinate systems.

Fuses inertial and range data via Kalman filters to resolve drift errors in GPS-denied environments.

A range localization system determines transmitter position by comparing received signals against reference signals from a master station.

Segmenting the location database into audited and user-inferred tiers resolves coverage accuracy trade-offs in WLAN positioning systems.

Weighted fusion of RF and motion sensor coordinates compensates for signal interference from obstacles, improving multi-object positioning accuracy.

Weighted least squares triangulation reduces velocity and position errors in 3D tracking by correlating observations across multiple pointing sensors.

A positioning system accumulates data in a receiving terminal before analysis to optimize resource usage.

A positioning device synchronizes its clock using a telecommunications network strobe signal.

A wireless network calculates radial distances from path loss values to triangulate mobile station positions on a grid without active device transmission.

Tangential plane approximation extrapolates GPS coordinates using a spherical earth model to maintain positioning accuracy without live signals.

Triggering WiFi beacon collection during signal loss reduces redundant observations and power consumption while maintaining location accuracy in built-up areas.

Virtual network slicing creates smaller cells using dedicated control signals to enhance position determination accuracy.

A location server determines time-dependent geographic parameters for a serving area to report representative mobile station positions.

Cross-correlation peak selection minimizes residuals to mitigate measurement uncertainty and noise in emitter localization.

A wireless localization method calculates error correction using weighted reference nodes to improve position accuracy.

A time-of-flight distance measurement system adjusts signal length and measurement count based on required accuracy levels.

Direction-finding measurements from distributed receivers generate marginalized probability distributions for emitter positions.

Recalculates cell relation configurations using high-precision measurements to resolve low accuracy in cellular networks, meeting E-911 standards.

Differential phase measurements eliminate ionosphere effects and clock rate errors, resolving integer ambiguities for sub-wavelength accuracy.

Mobile remote units self-survey using GPS and inertial sensors, eliminating pre-surveyed infrastructure requirements for accurate target positioning.

Directional forward link calibration values correct base station antenna position offsets in the almanac to improve mobile station location determination.

Segmenting the array into horizontal and vertical sub-arrays eliminates cross-polarization interference while maintaining dual-pol operational capability.

A precision radar registration algorithm interpolates ADS-B target histories to correct range and azimuth bias without requiring a tracker.

A dynamic satellite search method groups candidates and adapts group sizes to accelerate signal acquisition.

A segmented scanning approach identifies active channels first, then terminates when accuracy thresholds are met to reduce power consumption.

An RFID reader searches transmission power levels to determine measurement power for object localization.

A positioning apparatus calculates phase differences between transceiver pairs to determine integer ambiguity for accurate location tracking.

Pairwise line-of-bearing intersections using signal-to-noise ratio median estimates resolve multipath fading and reduce computational complexity.

Seeding a Kalman filter with non-simultaneous satellite measurements reduces time to first fix in urban environments.

Sub-Nyquist sampling of positioning signals via compressed sensing reduces data volume, lowering processing burden and network transmission costs.

Fixed reference transponders enable accurate level determination by comparing mobile signal strengths against known points, overcoming environmental errors.

High modulation rates in land-based transmitters resolve satellite signal blockage by enabling sub-meter precision without real-time kinematic processing.

A mobile radio terminal detects roaming base stations to block position information acquisition by software applications.

Generating time-specific coverage maps using traffic and weather data corrects location errors in carrier records for litigation.

Triangulating directional vectors from multiple positions calculates precise RF source coordinates despite signal obstructions.

Bounded time delay estimation filters non-direct path signals using motion tracking feedback to improve wireless device positioning accuracy.

A velocity estimation method delays received signals by multiple sample intervals to estimate candidate maximum Doppler frequencies.

Mobile terminals generate experience messages to update WLAN reference databases, resolving localization accuracy loss from dynamic infrastructure changes.

A wireless communication system selects channels using signal quality metrics to support motion detection processes.