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)

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 > wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track

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 > 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)