Direction/Deviation Determination Systems TRIZ Cases
- Synthetic Acoustic Antenna for Underwater Positioning Accuracy
Dynamic trajectory sampling overcomes physical aperture limits to boost USBL beacon positioning precision.
- Direction of Arrival Estimation Using Reference Signal Extraction
A direction of arrival estimation system uses a reference signal to isolate target sound from microphone outputs.
- Sonar Pulse Localization Using Dual Collinear Antennas
A sonar pulse localization system uses two collinear antennas to determine transmitter distance through signal focusing.
- Sonar Receiving Antenna Position Correction via Acoustic Measurement
Acoustic measurement detects receiving element deviations in sonar antennas, correcting position errors without increasing manufacturing complexity.
- Resolving Direction of Arrival Ambiguity in Spatial Audio
Bias compensation lookup tables resolve direction of arrival estimation ambiguities caused by spatial aliasing, enhancing spatial audio reproduction accuracy.
- Sinusoidal Signal Burst Detection in High Noise
Spectral analysis with incoherent integration detects periodic signal bursts, reducing operator workload during noisy searches.
- Sonar Bearing Accuracy via Spectral Interpolation
Interpolating frequency lines in the spectral domain increases sonar bearing accuracy while avoiding high computing effort required by runtime compensation.
- Acoustic Bearing Error Correction via Self-Calibration
A bearing correction module updates sensor-specific tables using operational residues to pre-correct measured angles.
- Cascaded Adaptive Beamforming for Reverberant Ultrasound
Cascaded adaptive beamforming phase-aligns sensor array signals using parallel LMS filters for real-time delay estimation.
- Sonar Bearing Profile Maneuver Detection
A sonar system calculates bearing profiles from recent and older angles to detect target maneuvers.
- Dual-Channel Underwater Sound Detection for Vessel Classification
A dual-channel modulation detection system cross-correlates hydrophone signals to extract amplitude modulation characteristics from underwater acoustic data.
- Sound Source Localization Using Interaural Time Difference Vectors
A sound source localization method calculates directed response power using interaural time difference vectors to estimate location direction.
- Sound Direction Estimation Using Dual Correlation Matrices
A sound direction estimation device calculates input and noise correlation matrices to localize sources.
- Antisubmarine Intrusion Probability Estimation via Dual Behavior Models
Dual behavior models estimate intruder presence probability to resolve trade-offs between computation speed and estimation accuracy.
- DOA Estimation Using Perpendicular Cross-Spectra Difference
Perpendicular cross-spectra difference disambiguates multiple sound sources and noise reflections for accurate direction-of-arrival estimation.
- Wave Source Direction Estimation Using Envelope Functions
A wave source direction estimation apparatus combines envelope functions extracted from cross-correlation signals to determine relative delay times.
- Self-locating Multistatic Coherent Sonar for GPS-Denied Target Detection
Multistatic coherent sonar calculates drifting sonobuoy positions using mutual acoustic signals without external GPS.
- Sound Source Detection Using Autocorrelation for S/N Robustness
Autocorrelation calculating means processes time-series sounds from multiple microphones to determine sound source existence with high signal-to-noise robustness.
- Sonar Signal Processing Directional Noise Suppression
A sonar device calculates direction vectors for frequency cells to suppress stationary noise selectively.
- Phase-Based Localization for Underwater Targets
A contractor-based localization method estimates underwater target positions using acoustic phase and time delays alongside orientation data.
- Spectral Merging of Sonar Tracks via Harmonic Comb Analysis
A spectral merging method groups sonar tracks by azimuth and analyzes frequency to identify harmonic combs.
- Sound Source Localization Using Amplitude Difference Vectors
A sound source localization apparatus calculates frame amplitude difference vectors from microphone array data to estimate target positions.
- Sonar Stereo Audio Signal Generation via Directional Segmentation
Directional segmentation isolates sound sources in noisy environments by processing selected signal subsets.
- Sonar Track Fusion for Bearing Trace Reduction
Track-to-track fusion merges sensor bearings into unified contact tracks, resolving operator confusion from crossing traces.