Description  Claims  Drawing  Cited references 

US2004522047A1   [0006] 
US2008088500A1   [0009] 
US3149326A   [0010] 

Radar waveform for automotive radar systems and applications   [0007] 
Study on non-linear stepped chirp radar system   [0008] 
77GHz Radar Sensor for Car Application   [0011]