Method and a system for determining a physical property as a function of position
AssigneeLios Technology GmbH
InventorMartin Fomme
Life of this patent
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Abstract
A method and system for determining a physical property as a function of position. A data series including data point from one or more channels is obtained by frequency modulation continuous wave. A number of data points correspond to Nda different values of frequency of modulation. One or more processing steps are performed including at least part of said primary data series to obtain at least one secondary data series comprising N (N>Nda) data points from the values of frequency of modulation. The secondary data series from frequency domain is transformed to obtain at least one back scattering curve in space domain, and optionally the back scattering curve(s) to one or more physical properties as a function of position.
Claims25
A frequency modulated continuous wave (FMCW) backscattering measurement system, comprising a non-transitory computer readable medium having stored thereon a computer readable program code for performing a method for processing a data series obtained by frequency modulated continuous wave (FMCW), the data series comprising data points from one or more channels, the method comprising:
- a. measuring a number of data points, corresponding to Nda different values of frequency of modulation {fm,0, fm,1, fm,n, . . . , fm,Nda}, thereby obtaining at least one primary data series from each channel,
- b. performing one or more processing steps comprising at least part of said primary data series to obtain at least one secondary data series comprising N data points for the values of frequency of modulation {f0, f1, fn, . . . , fN}, said processing steps comprises filling in data points with a filling series {ff,0, ff,1, ff,n, . . . , ff,N-Nda} comprising values of frequency of modulation not included in {fm,0, fm,1, fm,n, . . . , fm,Nda},
- c. performing a transformation of said secondary data series from frequency domain to obtain at least one back scattering curve in space domain,
- d. optionally relating said back scattering curve(s) to one or more physical properties as a function of position,
- wherein N>Nda.
A frequency modulated continuous wave (FMCW) system comprising
- at least one excitation source and
- an evaluation unit,
- wherein the evaluation unit comprising one or more signal processing units, and wherein the one or more signal processing units comprises a non-transitory computer readable medium having a code therein when executed by said processing units for:
- (i) measuring a number of data points, corresponding to Nda different values of frequency of modulation {fm,0, fm,1, fm,n, . . . , fm, Nda}, thereby obtaining at least one primary data series from each channel;
- (ii) performing one or more processing steps comprising at least part of said primary data series to obtain at least one secondary data series comprising N data points for the values of frequency of modulation {f0, f1, . . . , fN};
- said processing steps comprises filling in data points with a filling series {ff,0, ff,1, ff,n, . . . , ff,N-Nda} comprising values of frequency of modulation not included in {fm,0, fm,1, fm,n, . . . , fm,Nda};
- (iii) performing a transformation of said secondary data series from frequency domain to obtain at least one back scattering curve in space domain;
- (iv) optionally relating said back scattering curve(s) to one or more physical properties as a function of position, wherein N>Nda.
A non-transitory computer readable medium comprising computer program code stored therein for causing a computer processor to perform a method for processing a data series obtained by frequency modulated continuous wave (FMCW), the data series comprising data points from one or more channels, the method comprising:
- a. measuring a number of data points, corresponding to Nda different values of frequency of modulation {fm, 0, fm, 1, fm, n, . . . , fm Nda}, thereby obtaining at least one primary data series from each channel,
- b. performing one or more processing steps comprising at least part of said primary data series to obtain at least one secondary data series comprising N data points for the values of frequency of modulation {f0, f1, fn . . . fN}, said processing steps comprises filling in data points with a filling series {ff,0, ff,1, ff,n, . . . ff,N-Nda} comprising values of frequency of modulation not included in {fm,0, fm,1, fm,n, . . . , fm, Nda},
- c. performing a transformation of said secondary data series from frequency domain to obtain at least one back scattering curve in space domain,
- d. optionally relating said back scattering curve(s) to one or more physical properties as a function of position, wherein N>Nda.
Dependencies are inferred from the claim text.