A method of measuring the distance between two objects and/or the speed of one object in relation to the other, the objects incorporating respectively a transmitter-receiver unit and a transponder or reflector, in which method a phase comparison is made between a signal transmitted by the transmitter-receiver...http://www.google.fr/patents/US4851851?utm_source=gb-gplus-shareBrevet US4851851 - Method for measuring the distance and/or the relative velocity between two objects
Method for measuring the distance and/or the relative velocity between two ...
