DIFF Subgroup
G01S 15/582 Full Title
Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems > using reflection of acoustic waves (G01S15/66 takes precedence) > Systems of measurement, based on relative movement of the target > Velocity or trajectory determination systems; Sense-of-movement determination systems
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.