Direction Finders Using Radio Waves TRIZ Cases

Received position messages let a navigation terminal set accurate destination coordinates when users do not know the address or exact location.

Angle-dependent attenuation between antennas enables accurate RF direction finding and wireless device location without costly GPS or RFID.

Real-time UAV supervision combines online flight restrictions with offline flight certificates to monitor small drones without heavy onboard hardware.

Integrated light-fixture sensors combine BLE, Zigbee, and occupancy sensing to improve indoor object tracking through obstacles while cutting traffic.

AIS broadcasts from nearby ships combined with sonar bearings let a submerged vehicle fix its position without surfacing or inertial drift.

Blind cyclostationary correlation estimates Doppler frequency under noise, interference, and fading without pilot symbols, improving mobile speed estimation.

Real-time SNR estimation lets a GPS receiver adjust integration time and bandwidth to maintain stable tracking across weak and strong signals.

A decoupled angle-delay estimation approach resolves overlapping paths in wideband multi-antenna systems with lower complexity and accurate DoA-ToA pairing.

By overlaying stitched millimeter-wave images on an optical view, this case enables remote concealed weapon detection without contact or x-rays.