| 摘要 |
<p>An apparatus and method for achieving variable observation angles by a single transducer (70) rotationally and pivotally mounted with a housing (10); and for utilizing the variable angle transducer to detect and trace the distance of unseen objects (86) within a casing (85) from the transducer by moving the transducer (70) within its housing (10) which is held stationary against the casing (85); and for determining the angle of observation between the transducer and the observed object; and thereby accurately determining the relative position and orientation of the object within the casing, by means of a pitch angle device (97).</p> |
