using transmissions of interrupted pulse modulated waves

Introduced: January 1990

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 of measurement based on relative movement of target > Discriminating between fixed and moving objects or between objects moving at different speeds > using transmissions of interrupted pulse modulated waves

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1990.

Child Classifications

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G01S 13/524 based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi since 1990 +4 CPC IPC+CPC Available in IPC and CPC