Apparatus for measuring diffuse attenuation coefficient of sea water
    31.
    发明授权
    Apparatus for measuring diffuse attenuation coefficient of sea water 失效
    用于测量海水漫反射衰减系数的装置

    公开(公告)号:US4986655A

    公开(公告)日:1991-01-22

    申请号:US443620

    申请日:1989-11-30

    Abstract: Apparatus is disclosed for remotely measuring the diffuse attenuation coefficient K of ocean water from a platform such as an aircraft flying over the ocean. A pulsed laser beam is directed as a probe beam from the aircraft into the water to produce therein Brillouin backscattering signals which emanate back up through the water to the aircraft. An optical receiver in the aircraft receives and processes those backscattered signals. A very narrow optical bandpass filter passes the Brillouin signals to a photodetector, a digitizer and a data processor, the latter being programmed to compute the diffuse attenuation coefficient at predetermined depths and at the Brillouin wavelength. Measurements of the diffuse attenuation coefficient at various depths is accomplished by sampling and digitizing the Brillouin signals at predetermined intervals, each interval corresponding to a depth beneath the surface of the water. A preferred embodiment of the invention features similar apparatus having two signal-processing channels for simultaneously deriving the diffuse attenuation coefficient at two wavelengths by analyzing the upwelling Brillouin (blue) and Raman (green) backscatter generated by the probe beam. An alternate embodiment of the invention features apparatus for measuring the diffuse attenuation coefficient K of ocean water from a submerged submarine.

    Abstract translation: 公开了用于从诸如飞越海洋的飞机的平台远程测量海洋的漫射衰减系数K的装置。 脉冲激光束作为探测光束从飞行器引导到水中以产生其中布里渊后向散射信号,其通过水返回飞行器。 飞机中的光接收器接收并处理这些反向散射信号。 非常狭窄的光学带通滤波器将布里渊信号传递到光电检测器,数字转换器和数据处理器,后者被编程为计算预定深度和布里渊波长处的漫射衰减系数。 通过以预定的间隔采样和数字化布里渊信号来实现各种深度处的漫反射衰减系数的测量,每个间隔对应于水表面下方的深度。 本发明的优选实施例具有类似的装置,其具有两个信号处理通道,用于通过分析由探测光束产生的上升流布里渊(蓝色)和拉曼(绿色)反向散射,来同时导出两个波长处的漫反射衰减系数。 本发明的替代实施例的特征在于用于测量来自潜水艇的海洋的漫射衰减系数K的装置。

    Off-chip time-delayed integration area array Fraunhofer line
discriminator
    32.
    发明授权
    Off-chip time-delayed integration area array Fraunhofer line discriminator 失效
    片外延时积分区域阵列Fraunhofer线鉴别器

    公开(公告)号:US4724326A

    公开(公告)日:1988-02-09

    申请号:US871057

    申请日:1986-06-05

    Abstract: An apparatus for determining the fluorescence of materials in a scene which includes optical means to collect radiation from the scene. Means are provided to divide the collected radiation into first and second beam paths. The first beam path traverses a first filter centered on a Fraunhofer line and having a passband which extends into the solar continuum on either side of the Fraunhofer line. The second beam path traverses the first filter and a second filter, also centered on the Fraunhofer line, with a passband on the order of half the bandwidth, at half-depth, of the Fraunhofer line. Means are provided to image the first and second beams onto first and second detector arrays, respectively. The image on the first detector array is registered with the image on the second detector array. Co-adding means are provided whereby successive detector pixels at successive time intervals corresponding to a single point on the ground are added and averaged. The time interval is a function of a constant clock rate and a V/H signal. A single detector is provided to detect the intensity of direct solar radiation outside the Fraunhofer line. A processor compares the value of intensity from the co-added point on the ground from the first and second detector arrays and the single detector to determine fluorescence at each point on the ground in the scene being viewed. In another form, where an optical laser illuminator is employed, the first beam path traverses a first filter which only allows the laser radiation to pass. The second beam path has a passband which passes the emission spectrum of a material excited by the laser radiation.

    Abstract translation: 一种用于确定场景中材料的荧光的装置,其包括从场景收集辐射的光学装置。 提供了将收集的辐射分成第一和第二光束路径的装置。 第一光束路径穿过以弗劳恩霍夫线为中心的第一滤波器,并具有延伸到Fraunhofer线两侧的太阳能连续体中的通带。 第二个光束路径穿过第一个滤波器,另一个滤波器也以Fraunhofer线为中心,通道带宽在Fraunhofer线的半深度带宽的一半左右。 提供了将第一和第二光束分别成像到第一和第二检测器阵列上的装置。 第一检测器阵列上的图像与第二检测器阵列上的图像一起登记。 提供了相加装置,其中对应于地面上的单个点的连续时间间隔的连续检测器像素被添加并平均。 时间间隔是恒定时钟频率和V / H信号的函数。 提供单个检测器来检测Fraunhofer线以外的直接太阳辐射的强度。 处理器将来自地面上的共添加点的强度值与第一和第二检测器阵列和单个检测器进行比较,以确定所观察场景中地面上每个点的荧光。 在使用光学激光照明器的另一形式中,第一光束路径穿过仅允许激光辐射通过的第一滤光器。 第二光束路径具有通过激光辐射激发的材料的发射光谱的通带。

    Backscatter absorption gas imaging system
    33.
    发明授权
    Backscatter absorption gas imaging system 失效
    背散射吸收气体成像系统

    公开(公告)号:US4555627A

    公开(公告)日:1985-11-26

    申请号:US482380

    申请日:1983-04-05

    Abstract: A video imaging system for detecting hazardous gas leaks. Visual displays of invisible gas clouds are produced by radiation augmentation of the field of view of an imaging device by radiation corresponding to an absorption line of the gas to be detected. The field of view of an imager is irradiated by a laser. The imager receives both backscattered laser light and background radiation. When a detectable gas is present, the backscattered laser light is highly attenuated, producing a region of contrast or shadow on the image. A flying spot imaging system is utilized to synchronously irradiate and scan the area to lower laser power requirements. The imager signal is processed to produce a video display.

    Abstract translation: 用于检测有害气体泄漏的视频成像系统。 不可见气体云的视觉显示是通过对应于待检测气体的吸收线的辐射通过成像装置的视场的辐射增强产生的。 成像仪的视场被激光照射。 成像仪接收反向散射的激光和背景辐射。 当存在可检测气体时,反向散射激光被高度衰减,从而产生图像上的对比度或阴影区域。 利用飞点成像系统同步照射和扫描该区域以降低激光功率需求。 处理成像器信号以产生视频显示。

    Leak detection in pipelines
    34.
    发明授权
    Leak detection in pipelines 失效
    管道泄漏检测

    公开(公告)号:US4543481A

    公开(公告)日:1985-09-24

    申请号:US559945

    申请日:1983-12-08

    Inventor: Harold H. Zwick

    CPC classification number: G01M3/38 G01N21/3518 G01N2021/3531 G01N2201/0214

    Abstract: Leaks in natural gas pipelines are detected by an airborne gas cell correlation radiometer having two channels, one to detect methane and the other to detect nitrous oxide. The channel outputs are compared in order to detect anomalies in their relative magnitude, an increase in methane concentration relative to nitrous oxide concentration being indicative of a gas leakage in the area from which the radiometer receives radiation.

    Abstract translation: 通过具有两个通道的气载气体相关辐射计检测天然气管道中的泄漏,一个用于检测甲烷,另一个用于检测一氧化二氮。 对通道输出进行比较,以检测其相对值的异常值,相对于一氧化二氮浓度的甲烷浓度的增加表示辐射计接收辐射区域的气体泄漏。

    Visual detection of volcanic plumes
    38.
    发明授权
    Visual detection of volcanic plumes 有权
    视觉检测火山羽

    公开(公告)号:US09503696B2

    公开(公告)日:2016-11-22

    申请号:US14081356

    申请日:2013-11-15

    Abstract: A system for detecting volcanic plumes using a camera on an aircraft, a distant point-like source of light, and a computerized method of processing images acquired by the camera to detect phenomena indicative of the presence of volcanic plumes in a volume of space intersected by light from the light source. A computer system is programmed to determine whether the image data from the camera has characteristics indicating that the imaged light had passed through a volcanic plume or not. In response to detection of a volcanic plume in the flight path of an aircraft, the computer system outputs an alert activation signal to an alert device that produces a visible or audible alert.

    Abstract translation: 一种用于使用飞机上的照相机,遥远的点状光源来检测火山灰的系统,以及一种处理由照相机获取的图像的计算机化方法,以检测指示在与空间相交的空间体积中的火山羽状物的存在的现象 来自光源的光。 计算机系统被编程以确定来自相机的图像数据是否具有指示成像的光已经通过火山羽流的特征。 响应于飞行器的飞行路径中的火山羽毛的检测,计算机系统向警报装置输出警报激活信号,该警报装置产生可见或可听见的警报。

    OXYGEN ANALYSIS SYSTEM AND METHOD FOR MEASURING, MONITORING AND RECORDING OXYGEN CONCENTRATION IN AIRCRAFT FUEL TANKS
    39.
    发明申请
    OXYGEN ANALYSIS SYSTEM AND METHOD FOR MEASURING, MONITORING AND RECORDING OXYGEN CONCENTRATION IN AIRCRAFT FUEL TANKS 审中-公开
    氧气分析系统和测量,监测和记录飞机燃料油中的氧浓度的方法

    公开(公告)号:US20150219554A1

    公开(公告)日:2015-08-06

    申请号:US14170558

    申请日:2014-01-31

    Abstract: An oxygen analysis system (OAS) for measuring, monitoring and recording oxygen concentration in aircraft fuel tanks. The OAS has a rack support structure installed in an aircraft cabin with a plurality of oxygen analyzer devices mounted in the rack support structure. Each oxygen analyzer device has an oxygen sensor to measure oxygen concentration in gas samples continuously drawn from sample locations in aircraft fuel tanks and at an aircraft NGS ASM exit. The OAS further has a plurality of valves, a supply of calibration gases, a supply of purge and operating gases, and a power distribution assembly, all coupled to the rack support structure. The OAS further has a transport tubing assembly, a plurality of fuel tank gas sampling ports, an NGS ASM exit gas sampling port, a drain manifold assembly, and a data acquisition and recording system having a user interface software to monitor and control the OAS.

    Abstract translation: 用于测量,监测和记录飞机燃料箱中氧气浓度的氧分析系统(OAS)。 OAS具有安装在飞机机舱中的机架支撑结构,其具有安装在机架支撑结构中的多个氧分析仪装置。 每个氧气分析仪装置都有一个氧传感器来测量在飞机燃料箱和飞机NGS ASM出口处连续抽取的气体样品中的氧气浓度。 OAS还具有多个阀,校准气体的供应,吹扫和操作气体的供应以及全部联接到齿条支撑结构的动力分配组件。 OAS还具有运输管道组件,多个燃料箱气体采样端口,NGS ASM出口采气口,排水歧管组件以及具有用于监测和控制OAS的用户界面软件的数据采集和记录系统。

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