Frequency search device and frequency search realization method
The invention discloses a frequency search device and a frequency search realization method. The method comprises steps: piecewise Fourier transform is carried out on in-phase correlation result signals and orthogonal correlation result signals received from a frequency search circuit; the signals c...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a frequency search device and a frequency search realization method. The method comprises steps: piecewise Fourier transform is carried out on in-phase correlation result signals and orthogonal correlation result signals received from a frequency search circuit; the signals completing the piecewise Fourier transform are subjected to coherent accumulation through a coherent accumulation unit and then subjected to modulus output; or, the in-phase correlation result signals and the orthogonal correlation result signals received from the frequency search circuit are subjected to piecewise coherent accumulation processing; and the signals completing the piecewise coherent accumulation processing are subjected to Fourier transform processing and modulus output. According to the method of the invention, through carrying out piecewise Fourier transform and coherent accumulation processing on the in-phase correlation result signals and the orthogonal correlation result signals or carrying out p |
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