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PCE
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DIFF Subgroup
G01S 13/20

whereby multiple time-around echoes are used or eliminated

Introduced: January 1980

Title

Titles differ between systems:

IPC: whereby multiple time-around echos are used or eliminated

CPC: whereby multiple time-around echoes are used or eliminated

Full Title

Full titles differ between systems:

IPC:

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 > using transmission of interrupted, pulse modulated waves > whereby multiple time-around echos are used or eliminated

CPC:

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 interrupted, pulse modulated waves (determination of distance by phase measurement G01S13/32) > whereby multiple time-around echoes are used or eliminated

No child classifications to compare. This is a leaf node in both IPC and CPC.