Velocity or trajectory determination systems; Sense-of-movement determination systems

Introduced: January 1980

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 > Velocity or trajectory determination systems; Sense-of-movement determination systems

CPC subdivides this area 3x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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G01S 13/581 +1 CPC CPC only CPC only
G01S 13/583 +1 CPC CPC only CPC only
G01S 13/585 +2 CPC CPC only CPC only
G01S 13/588 CPC only CPC only
G01S 13/589 CPC only CPC only
G01S 13/60 wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track (G01S13/64 takes precedence) since 1980 +1 CPC IPC+CPC Available in IPC and CPC
G01S 13/62 Sense-of-movement determination since 1980 IPC+CPC Available in IPC and CPC
G01S 13/64 Velocity measuring systems using range gates since 1980 IPC+CPC Available in IPC and CPC