using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated

Full Title

Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified > Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems > Systems determining position data of a target > Systems for measuring distance only (indirect measurement G01S13/46) > using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated

Child Classifications

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• G01S 13/325
• G01S 13/34 using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
• G01S 13/36 with phase comparison between the received signal and the contemporaneously transmitted signal