MONITORING VEHICLE MOTION USING SURFACE-PENETRATING RADAR SYSTEMS AND DOPPLER SHIFTS

Doppler analysis of surface-penetrating radar signals are utilized to compute or estimate parameters associated with vehicle motion. The Doppler shift may originate with reflections from subsurface or above-surface features ahead of (or behind) the moving vehicle, in which case a vehicle speed may b...

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Bibliographische Detailangaben
Hauptverfasser:	FREEDMAN, Sanford, QUINN, Connor, STANLEY, Byron, JAMISON, Daniel, FOX, Bryan, J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES GYROSCOPIC INSTRUMENTS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SURVEYING TESTING
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Beschreibung
Zusammenfassung:	Doppler analysis of surface-penetrating radar signals are utilized to compute or estimate parameters associated with vehicle motion. The Doppler shift may originate with reflections from subsurface or above-surface features ahead of (or behind) the moving vehicle, in which case a vehicle speed may be computed from the shift; or may originate with reflections from surface or subsurface features directly below the vehicle, in which case the shift corresponds to a vertical speed that may be used to sense the performance of, or changes in, the vehicle's suspension system.