原文传递
Sound Based Positioning.
| 题名： | Sound Based Positioning. |
| 作者： | Weathers, D. L. |
| 关键词： | Acoustic propagation, Acoustics, Engineering, Equations, Cross correlation, Dead reckoning, Electrical engineering, Frequency, Signal processing, Detection, Accuracy, Algorithms, Detectors, Navigation, Data analysis, Measurement, Unmanned aerial vehicles, Air force, Aircrafts, Mobile phones, Sound based positioning, Alternative pnt, Time difference of arrival, Beamforming, Signal of opportunity |
| 摘要： | With a growing interest in non-GPS positioning, navigation, and timing (PNT), sound based positioning provides a precise way to locate both sound sources and microphones through audible signals of opportunity (SoOPs). Exploiting SoOPs allows for passive location estimation. But, attributing each signal to a specific source location when signals are simultaneously emitting proves problematic. Using an array of microphones, unique SoOPs are identified and located through steered response beamforming. Sound source signals are then isolated through time-frequency masking to provide clear reference stations by which to estimate the location of a separate microphone through time difference of arrival measurements. Results are shown for real data. |
| 报告类型： | 科技报告 |
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