Radio Wave Reradiation/Reflection TRIZ Cases

A large 2D antenna array behind the license plate addresses aperture and integration constraints while delivering sub-degree angular resolution.

Bayesian networks combine radar-track kinematic features and probability calculations to improve stand-alone classification of ABTs and ballistic threats.

Marine radar and data correlation identify non-cooperative aerial vehicles without onboard transceivers, supporting collision avoidance.

See how AI-assisted scheduling ranks radar scan patterns by object and environmental context, replacing fixed scans with targeted detection.

Segmented radar signals use low-interference sections to set thresholds, improving interference detection and relative distance and speed measurement.

Two spaced radar sensors plus density-based clustering separate nearby users’ body and hand tracks and preserve track history.

Signal blockages can hide RF echoes from receiving devices; RIS reflection redirects LOS and echo paths for time-difference object positioning.

False-positive object detections caused by double-bounce radar returns are screened using azimuth, range, and relative velocity criteria.

Aircraft echoes provide an online reference for calibrating echo intensity while continuous-wave weather radar keeps collecting data.

A switching matrix time-multiplexes antenna connections to emulate spatially distributed radar targets with fewer RTS units and improved angular resolution.

Multiple lower-rate DACs and LO leakage correction combine RF sub-bands into a high-resolution radar signal with very high instantaneous bandwidth.

Filtering reachable-region, false-alarm, and low-RCS detections before particle generation improves radar grid efficiency and robustness.

Dual-range channel listening selects time-frequency resources for radar target detection while avoiding mutual interference and false alarms.

A delayed second chirp mixes with radar echoes to limit time-windowing effects while preserving SNR and spatial resolution at low duty cycle.

Fan harmonics can create false target returns; adaptive spectral filtering suppresses them while preserving normal Doppler signals.

Adjacent-frequency monitoring pauses radar transmission during chirp crossover events, lowering the noise floor without inter-radar communication.

Multiple lower-rate DACs split the radar band while pre-distortion corrects LO leakage for stable amplitude and phase across the transmitted pulse.

Comparing transmitted and reflected RF signals detects nearby objects, allowing output power to meet MPE/SAR limits without fixed low-power operation.

Alternating two central frequencies extends the detectable Doppler range and improves radar target detection accuracy.

Multipath reflections can distort MIMO radar angles; a dual-target cross-path model uses sequential 1D estimates to cut computation.

Enable signaling lets an ECU activate vehicle sensors without sending power through the sensor cable, reducing consumption and electromagnetic interference.

Radio movement can distort CSI-based living-body sensing; this approach checks stationarity and pauses detection during motion.

Coherent processing tests multiple target-angle hypotheses to improve angular resolution and detection accuracy in sparse radar arrays.

See how region growth identifies reliable SPSs, builds local star networks, and adds DPSs for fuller five-dimensional SAR coverage.

A two-dimensional antenna array behind the license plate expands aperture for sub-degree angular resolution without disrupting vehicle front styling.

Reusing Wi-Fi transmit and receive chains for FMCW chirps enables low-cost presence and location detection without dedicated radar hardware.

Sparse, non-uniform antenna arrays can create phase-shift errors; coherent processing improves angle clarity and signal-to-noise ratio.

Optical flow compares successive SAR looks, while platform-motion correction converts apparent motion into high-resolution surface velocity maps.

Different transmit and receive antenna angles improve elevation measurement and help distinguish traversable objects from obstacles.

Separate virtual-subarray groups are beamformed and their phases compared to resolve MIMO radar velocity ambiguity without overlapping arrays.

Ground reflections replace multi-frame object tracking, enabling accurate ego-velocity estimation from one radar frame with lower computational cost.

Beat-signal products estimate phase error and correct radar returns for more accurate range, velocity, and direction measurements.

Road-surface radar responses replace factory targets, enabling iterative estimation of sensor height and angle throughout vehicle operation.

Interleaved reflections from repeated pulses expand receiver samples, improving angular and range resolution without higher-rate hardware.

Neighboring radar interference is mitigated by dividing the beamwidth into sectors and broadcasting trimmed waves where signal energy stays below threshold.

Averaging range-Doppler maps across sequential transmit antennas improves radar target accuracy while limiting antenna-array complexity.

This case aligns distributed MIMO radar chips through master-slave timing, interpolation, and pulse swallowing to improve angular resolution.

A feedback-controlled radar shifts its field of view when tracked attendees reach the FOV edge, preserving continuous detection.

Radar point-group density is limited for shape and size assessment; selective superimposition of stationary-object data improves detection precision.

Projecting sensor data into an azimuthal image plane enables regional blindness checks, preserving usable data while discarding disturbed areas.

Orthogonal transmit and receive polarizations help resolve layered radar returns while estimating permittivity, conductivity, wavelength, and skin depth.

Preconfigured radar groups, orthogonal slots, and changing frame time offsets reduce chirp interference without pairwise signaling overhead.

Alternating RHCP and LHCP separates ground clutter from useful radar returns while avoiding computationally expensive STAP processing.

Overlapping UWB reflections are separated with covariance eigenvalue analysis to estimate propagation delays and angles for multiple targets.

Time-domain monitoring keeps frequency-domain radar processing in low-power mode until motion is detected, preserving fast gesture response.

Satellite radar compares reflections across oxygen-band frequencies to measure pressure globally despite sparse ground stations.

Delayed loopback signals reuse service channels to calibrate separate RF chips without a dedicated radar calibration channel.

Iterative receiver gating separates closely spaced target reflections by adapting the detection window to pulse delay and target range.

Different antenna-set spacings provide complementary accuracy characteristics, helping radar processing maintain angle estimation across directions.

Multiple radar subunits on differently oriented body faces combine TX/RX channels for 360° azimuth coverage around and under vehicles.