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    System for detecting obstacles in the vicinity of a touchdown point
    1.
    发明授权
    System for detecting obstacles in the vicinity of a touchdown point 有权
    用于检测接地点附近的障碍物的系统

    公开(公告)号：US07839322B2

    公开(公告)日：2010-11-23

    申请号：US11765464

    申请日：2007-06-20

    申请人： François-Xavier Filias ,  Jean Sequeira

    发明人： François-Xavier Filias ,  Jean Sequeira

    IPC分类号： G01S13/93 ,  G01S13/06 ,  G01S13/00

    CPC分类号： G05D1/0646

    摘要： A method of detecting obstacles on board an aircraft while in the vicinity (44) of a touchdown point (27, 42), includes the following operations: selecting/determining a path (41) to be followed by the aircraft overflying the touchdown point; the aircraft overflying the touchdown point following the overflight path, and during the overflight recording signals/data delivered by an on-board rangefinder observing a portion of space extending below the aircraft; analyzing the rangefinder data to detect the presence of obstacles and to determine their positions in a terrestrial frame of reference, where appropriate to determine their dimensions; and recording the detected obstacle position data, and dimensions, if any, in a memory.

    摘要翻译： 一种在着陆点（27,42）附近（44）检测飞机上的障碍物的方法包括以下操作：选择/确定飞越着陆点的飞机路径（41）; 飞行器在飞越路径之后飞越着陆点，并且在飞越期间记录由飞行器下方延伸的空间部分的车载测距仪传送的信号/数据; 分析测距仪数据以检测障碍物的存在并确定其在地面参照系中的位置，以便酌情确定其尺寸; 并将检测到的障碍物位置数据和尺寸（如果有的话）记录在存储器中。

    Method of detecting suspended filamentary objects by telemetry
    2.
    发明授权
    Method of detecting suspended filamentary objects by telemetry 有权
    通过遥测检测悬挂丝状物体的方法

    公开(公告)号：US07397548B2

    公开(公告)日：2008-07-08

    申请号：US11791152

    申请日：2006-07-06

    申请人： François-Xavier Filias ,  Jean Sequeira

    发明人： François-Xavier Filias ,  Jean Sequeira

    IPC分类号： G01B3/36

    CPC分类号： G01S13/93 ,  G01S17/933

    摘要： A method of detecting the presence of a suspended filamentary object in view of a telemeter on an aircraft includes: i) calculating terrestrial coordinates of points corresponding to telemeter echoes, and selecting candidates; ii) searching a horizontal plane for straight line segments close to vertical projections of candidate points; and iii) searching each vertical plane containing one of the straight line segments for portions of catenaries close to candidate points. In step iii), for each considered vertical plane and each triplet of candidate points close to the considered vertical plane, calculating values of three parameters of a catenary containing the projections on the vertical plane of the three points of the considered triplet, and determining presence of at least one suspended filamentary object as a function of the distribution of values of catenary parameters calculated for all of the triplets of candidate points close to the vertical plane under consideration.

    摘要翻译： 鉴于飞机上的遥测仪，检测悬挂的丝状物体的存在的方法包括：i）计算对应于遥测仪回波的点的地面坐标和选择候选; ii）在水平面上搜索靠近候选点的垂直投影的直线段; 以及iii）搜索包含一个直线段的每个垂直平面用于接近候选点的悬链线的部分。 在步骤iii）中，对于每个考虑的垂直平面和接近所考虑的垂直平面的候选点的每个三元组，计算包含在所考虑的三元组的三个点的垂直平面上的投影的悬链线的三个参数的值， 至少一个悬挂的丝状物体作为针对接近所考虑的垂直平面的候选点的所有三胞胎计算的接触网参数值的分布的函数的函数。