・maingroup

(Not Translated)

Note(s) Groups G01S 13/00-G01S 17/00cover:[3] systems for detecting the presence of an object, e g  by reflection or reradiation from the object itself, or from a transponder associated with the object, for determining the distance or relative velocity of an object, for providing a co-ordinated display of the distance and direction of an object or for obtaining an image thereof;systems arranged for mounting on a moving craft or vehicle and using the reflection of waves from an extended surface external to the craft, e g  the surface of the earth, to determine the velocity and direction of motion of the craft relative to the surface  Groups G01S 13/00-G01S 17/00 do not cover: systems for determining the direction of an object by means not employing reflection or reradiation, which are covered by groups G01S 1/00 or G01S 3/00;systems for determining distance or velocity of an object by means not employing reflection or reradiation, which are covered by group G01S 11/00