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VERFAHREN ZUR ENTFERNUNGSMESSUNG MIT ANGEPASSTER FOURIER-TRANSFORMATION, UND RADARSYSTEM ZUR UMSETZUNG DIESES VERFAHRENS
VERFAHREN ZUR ENTFERNUNGSMESSUNG MIT ANGEPASSTER FOURIER-TRANSFORMATION, UND RADARSYSTEM ZUR UMSETZUNG DIESES VERFAHRENS
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摘要
Radar system (300) configured to determine radar-to-ground distance measurements. The radar system (300) comprises transmission and reception means (301) configured to transmit two radio signals in the direction of the ground and to receive the signals obtained by the reflection of the two signals transmitted by the ground and calculation means ( 307) configured to determine the frequency representations of the transmitted and received signals and to determine a frequency quantity as a function of the frequency representations. The radar system (300) is characterized in that the calculation means (307) are configured to: - sample the frequency quantity over a determined number of samples, which provides a sampled signal; - determine a number of frequency measurements as a function of a constant distance measurement precision value; - determining frequency measurements by applying to the sampled signal a fast Fourier transform spectral decomposition using a decimation of the sampled signal in a ratio dependent on the measurement accuracy value distance, and- determining a distance measurement corresponding to each frequency measurement.
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