| 摘要 |
<p>The invention consists in a method for ascertaining the mutual visibility of two points (A, B), comprising at least the following functional steps: determine the position of the above-mentioned points (A, B) and trace the route that joins them; if the distance between the two points (A, B) is not beyond the optical range of the instruments available, take up position on one of the points (B, A respectively) and check that the other point (A, B respectively) is visible; otherwise, take up position at an intermediate point (A') belonging to the above-mentioned route and check that both points (A, B) are visible from said intermediate point (A'); if there is no intermediate point (A') belonging to the above route from which both points (A, B) are visible, move along (or parallel to) the above route and check that there are no obstacles along the path. <??>This method is advantageously implemented by means of an adequately equipped helicopter, which permits determination of the position of points that would otherwise be impossible to reach. <IMAGE></p> |
