Method and device detection with radar frequency modulation continuous wave having a lifting ambiguity between distance and speed.

摘要

The invention relates to a method and a device for detecting RADAR frequency modulated continuous wave elevation PRESENTING THE DISTANCE BETWEEN AMBIGUITY and speed. RADAR emits at least alternately two ramps (32, 33) PARALLEL AND STAPLE frequency modulation slightly offset in frequency variation (DL F), switching the frequency of a RAMP TO THE OTHER END OF A GIVEN TIME (TF) ; The distance to a target detected is estimated according OF PHASE DIFFERENCE (DL PH) between a received signal (S 1 (t)) corresponding to the PRIM ERA RAMP (32) and a signal received (S 2 (T)) for the second ramp (33) to provide WHITE SPEED DISTANCE FROM THE ESTIMATED AND STRAIGHT TO THE WHITE ambiguity associated. APPLICATION: IN PARTICULAR RADAR FOR AUTOMOBILES.