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    • 1. 发明申请
    • System and method of identifying an object in a laser beam illuminated scene based on material types
    • 基于材料类型识别激光束照明场景中物体的系统和方法
    • US20050189503A1
    • 2005-09-01
    • US10789114
    • 2004-02-26
    • James JamiesonMark RayClinton Meneely
    • James JamiesonMark RayClinton Meneely
    • G01N21/25G01N21/35G01S7/48G01S7/484G01S17/87G01S17/89G06K9/46G01J5/02
    • G06K9/4652G01N21/251G01N21/359G01S7/4802G01S7/484G01S17/87G01S17/89
    • A method of identifying an object in a laser beam illuminated scene based on material types comprises the steps of: emitting a pulsed beam of laser energy, each beam pulse comprising a plurality of different discrete wavelength emission components; illuminating a predetermined scene with the pulsed beam; receiving return laser pulses from objects within the illuminated scene, each return laser pulse comprising return components corresponding to the plurality of different discrete wavelength emission components; determining spectral reflectance values for the plurality of return components of each return laser pulse; determining a material type for each return laser pulse of the illuminated scene based on the plurality of reflectance values of the corresponding return pulse; indexing each determined material type to a position in the illuminated scene; and identifying an object in the illuminated scene based on material types and indexed positions thereof in the scene. A counterpart system for carrying out the method is also disclosed.
    • 基于材料类型识别激光束照明场景中的物体的方法包括以下步骤:发射激光能量的脉冲束,每个束脉冲包括多个不同的离散波长发射分量; 用脉冲光照射预定场景; 从所述照明场景内的物体接收返回激光脉冲,每个返回激光脉冲包括对应于所述多个不同离散波长发射部件的返回分量; 确定每个返回激光脉冲的多个返回分量的光谱反射率值; 基于对应的返回脉冲的多个反射率值确定照明场景的每个返回激光脉冲的材料类型; 将每个确定的材料类型索引到照明场景中的位置; 并且基于场景中的材料类型和索引位置来识别照明场景中的对象。 还公开了用于执行该方法的对应系统。
    • 3. 发明申请
    • Combined laser altimeter and ground velocity measurement apparatus
    • 组合激光高度计和地面速度测量装置
    • US20050231710A1
    • 2005-10-20
    • US10825062
    • 2004-04-15
    • James JamiesonGary HalamaClinton Meneely
    • James JamiesonGary HalamaClinton Meneely
    • G01C5/00G01N21/00G01P3/36G01S7/42G01S7/481G01S17/50G01S17/58G01S17/87G01S17/88G01S17/93
    • G01S17/87G01C5/005G01P3/366G01S7/4812G01S7/4817G01S17/58G01S17/933
    • Combined laser-based apparatus for determining both altitude and ground velocity of an aircraft comprises: a laser source for emitting pulsed laser beams substantially at a predetermined wavelength; a plurality of first optical elements for directing the laser beams from a first optical path to a second optical path which exits the first optical elements; a plurality of second optical elements configured to form a telescope, the second optical path and telescope field of view being fixedly co-aligned; an optical scanner for directing the second optical path and telescope field of view to desired ground positions while maintaining the co-alignment thereof; the telescope for receiving Doppler wavelength shifted reflections of the pulsed laser beams and directing the received ground reflections substantially over a third optical path; an optical filter element for separating the ground reflections of the third optical path into first and second portions that are dependent on the Doppler wavelength shift of the ground reflections; and processing means for determining altitude and ground velocity of the aircraft based on the first and second portions.
    • 用于确定飞行器的高度和地面速度的组合的基于激光的装置包括:用于发射基本上以预定波长的脉冲激光束的激光源; 用于将激光束从第一光路引导到离开第一光学元件的第二光路的多个第一光学元件; 配置成形成望远镜的多个第二光学元件,第二光路和望远镜视场被固定地对齐; 光学扫描器,用于将第二光路和望远镜的视野引导到期望的接地位置,同时保持其对准; 用于接收脉冲激光束的多普勒波长偏移反射并将接收到的地面反射基本上引导到第三光路上的望远镜; 光滤波器元件,用于将第三光路的接地反射分离成第一和第二部分,这取决于地面反射的多普勒波长偏移; 以及用于基于第一和第二部分确定飞行器的高度和地面速度的处理装置。
    • 4. 发明申请
    • Laser perimeter awareness system
    • 激光周界意识系统
    • US20060017939A1
    • 2006-01-26
    • US10958154
    • 2004-10-04
    • James JamiesonMark Ray
    • James JamiesonMark Ray
    • G01C3/08G01B11/26G01B11/14
    • G01S17/89G01S7/4802G01S7/4811G01S7/4818G01S13/78G01S13/86G01S17/023G01S17/42G01S17/58G01S17/66G01S17/74
    • A method of laser scanning a perimeter zone of a target site for the detection of potential threats comprises: scanning a pulsed laser beam across the perimeter zone; receiving echoes from the pulsed laser beam during the perimeter zone scan; deriving range data corresponding to the received echoes; determining position data of the received echoes in the perimeter zone; forming a scene image of a scan of the perimeter zone based on the range and position data of the received echoes thereof; repeating the steps of scanning, receiving, deriving, determining and forming for a plurality of perimeter zone scans to form scene images of each scan of the plurality; and comparing scene images of the plurality to detect a potential threat in the perimeter zone. In addition, a method of authenticating a potential threat detected in a perimeter zone of a target site comprises: detecting the potential threat and upon detection, interrogating the potential threat for a response by a wireless transmission; declaring the potential threat unauthorized if no response is transmitted wirelessly within a predetermined time interval from the interrogation; receiving the response, if transmitted, and determining if the response comprises a proper access code; and declaring the potential threat unauthorized if the received response is determined not to comprise the proper access code.
    • 用于检测潜在威胁的激光扫描目标部位的周边区域的方法包括:扫描穿过周边区域的脉冲激光束; 在周边区域扫描期间从脉冲激光束接收回波; 导出与所接收的回波相对应的范围数据; 确定所述周边区域中所接收的回波的位置数据; 基于所接收的回波的范围和位置数据,形成周边区域的扫描的场景图像; 重复扫描,接收,导出,确定和形成多个周边区域扫描以形成多个扫描中的每个扫描的场景图像的步骤; 并且比较多个的场景图像以检测周边区域中的潜在威胁。 另外,对在目标地点的周边区域中检测到的潜在威胁进行认证的方法包括:检测潜在威胁并在检测到时询问通过无线传输的响应的潜在威胁; 如果在从询问起的预定时间间隔内无响应地发送响应,则声明潜在的威胁是未授权的; 接收响应,如果发送,并确定响应是否包括正确的访问代码; 并且如果确定接收到的响应不包括适当的访问代码,则声明潜在的威胁是未授权的。