Invention Grant
- Patent Title: Method for determining the distance and speed of an object
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Application No.: US16494576Application Date: 2018-01-15
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Publication No.: US11448743B2Publication Date: 2022-09-20
- Inventor: Ralph Mende
- Applicant: S.M.S. SMART MICROWAVE SENSORS GMBH
- Applicant Address: DE Braunschweig
- Assignee: S.M.S. SMART MICROWAVE SENSORS GMBH
- Current Assignee: S.M.S. SMART MICROWAVE SENSORS GMBH
- Current Assignee Address: DE Braunschweig
- Agency: WCF IP
- Priority: DE102017105783.8 20170317
- International Application: PCT/EP2018/050858 WO 20180115
- International Announcement: WO2018/166668 WO 20180920
- Main IPC: G01S13/34
- IPC: G01S13/34 ; G01S13/536 ; G01S7/35

Abstract:
The invention relates to a method for determining the distance and radial speed of an object relative to a measuring point, wherein the method comprises the following steps: a) emitting first transmission signals, which are radar radiation in the form of first frequency ramps, b) emitting second transmission signals, which are radar radiation in the form of second frequency ramps, wherein the second frequency ramps are different to the first frequency ramps, c) receiving received signals, which are first and second transmission signals reflected at the object, d) mixing the received signals with the first or second transmission signals to create mixed signals, e) creating a range-Doppler matrix using the mixed signals, f) detecting two Doppler frequencies, which originate from the radial speed of the object, and g) evaluating the Doppler frequencies and/or phase information of the mixed signals, such that ambiguities are eliminated when determining the radial speed wherein the first transmission signals and the second transmission signals are emitted at the same time.
Information query
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