Method for positioning using GPS in a restrictive coverage environment
    3.
    发明授权
    Method for positioning using GPS in a restrictive coverage environment 有权
    在限制性覆盖环境中使用GPS进行定位的方法

    公开(公告)号:US07528770B2

    公开(公告)日:2009-05-05

    申请号:US11180374

    申请日:2005-07-13

    IPC分类号: G01S5/14

    CPC分类号: G01S5/0036 G01S19/44

    摘要: A system consisting of a base GPS receiver with a clear view of the sky, one or more remote GPS receivers with restricted views of the sky and a processing center that batch processes range information provided by the GPS receivers determines the positions of the remote GPS receivers to within tight tolerances. The base GPS receiver and the remote GPS receivers produce range information based on the satellite signals that the respective receivers can track at a given time, and provide the range information to the processing center. The range information includes both code and carrier measurements for each of the signals that are being tracked by the respective GPS receivers. The center collects the range information over an extended period of time, for example, hours, days or weeks, and then batch processes the collected information in multiple passes through the data, to calculate the precise latitude, longitude and height of the receiver. The center batch processes the data using a floating ambiguity filter that, after a first pass through the data, is initialized with the position calculated in an earlier pass. The center also calculates the quality of the collected range information by fixing the position and position covariance of the floating ambiguity filter and using double differences with the base GPS receiver measurements, to ensure that the information used in subsequent position calculations is sufficiently reliable.

    摘要翻译: 由具有清晰视野的基本GPS接收机和天线受限视角的一个或多个远程GPS接收机和由GPS接收机提供的批量处理范围信息的处理中心组成的系统确定远程GPS接收机的位置 在严格的公差范围内。 基地GPS接收机和远程GPS接收机根据相应接收机在给定时间可以跟踪的卫星信号产生距离信息,并向处理中心提供距离信息。 范围信息包括针对由各个GPS接收机跟踪的每个信号的码和载波测量。 中心在较长时间内收集范围信息,例如,几个小时,几天或几周,然后通过数据多次处理收集的信息,以计算接收机的精确纬度,经度和高度。 中心批处理使用浮动模糊度过滤器的数据,该浮动模糊度过滤器在首次通过数据之后,以较早的通过计算的位置初始化。 中心还通过固定浮动模糊滤波器的位置和位置协方差并使用与基本GPS接收机测量值的双重差异来计算采集范围信息的质量,以确保后续位置计算中使用的信息足够可靠。

    Cylindrical roller for a glass tempering oven having improved ends caps
    4.
    发明授权
    Cylindrical roller for a glass tempering oven having improved ends caps 失效
    用于具有改进的端盖的玻璃回火炉的圆柱滚子

    公开(公告)号:US5146675A

    公开(公告)日:1992-09-15

    申请号:US711808

    申请日:1991-06-07

    IPC分类号: B65G39/09 C03B35/18 F16C13/00

    摘要: A cylindrical roller apparatus for a glass tempering oven comprises a ceramic roller having a first end portion and a second end portion, a flat formed on each end portion of the roller, an end cap having a cylindrical wall mounted on each end portion of the roller, a metal retaining plate positioned on each flat, and a screw threaded through each end cap wall that screws into contact with the retaining plate for securing each end cap to the roller and for pushing the roller flush against the inner surface of the end cap wall. An acess hole can be provided in the end cap for welding together the screw, retaining plate, and end cap. Grooves can also be formed on the inner surface of the end cap, accessible through an opening formed through the end cap, to allow injection of adhesive between the roller and end cap to further secure the two together.

    摘要翻译: 一种用于玻璃回火炉的圆柱滚子装置,包括具有第一端部和第二端部的陶瓷辊,形成在辊的每个端部上的平坦端,具有安装在辊的每个端部上的圆柱形壁的端盖 ,定位在每个平面上的金属保持板,以及螺纹穿过每个端盖壁的螺钉,螺钉与保持板接触,用于将每个端盖固定到辊上并将辊推压到端盖壁的内表面上 。 可以在端盖中设置一个孔,用于将螺钉,保持板和端盖焊接在一起。 沟槽也可以形成在端盖的内表面上,可通过通过端盖形成的开口接近,以允许在辊和端盖之间注入粘合剂以进一步将两者固定在一起。

    Track model constraint for GPS position
    5.
    发明授权
    Track model constraint for GPS position 有权
    GPS位置跟踪模型约束

    公开(公告)号:US06728637B2

    公开(公告)日:2004-04-27

    申请号:US09888195

    申请日:2001-06-22

    IPC分类号: G06C2126

    摘要: A track model is created for use with a GPS receiver. In one embodiment, the track model is a set of planar surfaces which approximate the contiguous surface on which navigation takes place. The GPS receiver searches for an appropriate planar surface associated with its approximate position. Having found the appropriate planar surface, the GPS receiver constrains its position using the planar surface associated with its approximate position. Using the track model improves the accuracy of the computed position at the time and improves the ambiguity estimation process so that positions with greatly improved accuracy are available sooner.

    摘要翻译: 创建轨道模型以与GPS接收器一起使用。 在一个实施例中,轨道模型是近似在其上进行导航的邻接表面的一组平面表面。 GPS接收机搜索与其近似位置相关联的适当平面。 找到适当的平面后,GPS接收机使用与其近似位置相关联的平面来限制其位置。 使用轨迹模型提高了计算时间位置的精度,并改善了模糊度估计过程,从而可以更快地获得具有极大提高精度的位置。

    Aromatic oil pesticide adjuvant
    7.
    发明授权
    Aromatic oil pesticide adjuvant 失效
    芳香油农药助剂

    公开(公告)号:US5459122A

    公开(公告)日:1995-10-17

    申请号:US233831

    申请日:1994-04-26

    CPC分类号: C10G65/08 A01N25/02

    摘要: An aromatic oil having an aniline point less than 120.degree. F., a mutagenicity index based on The Modified Ames Test of less than 2.0, a benzene, naphthalene and methyl substituted benzenes and naphthalenes individual component concentrations less than 100 wppm, and a clay gel aromatics fraction content of at least 50 weight % based on aromatic oil, said aromatics fraction characterized in that it has a naphthene-benzenes and dinaphthenebenzenes content of at least 50 volume % based on aromatics fraction. The invention also relates to a process for preparing the aromatic oil which comprises the steps of selective solvent extraction, selective distillation and two-stage hydrotreating with removal of hydrogen sulfide and/or ammonia. The aromatic oils are useful in agricultural formulations due to their low environmental impacts.

    摘要翻译: 苯胺点小于120°F的芳香油,基于改性Ames试验的致突变性指数小于2.0,苯,萘和甲基取代苯和萘单独成分浓度小于100wppm,粘土凝胶 所述芳族化合物馏分的芳族化合物馏分含量至少为50重量%,所述芳族化合物部分的特征在于其基于芳族化合物部分具有至少50体积%的环烷 - 苯和苊萘含量。 本发明还涉及一种制备芳香油的方法,包括选择性溶剂萃取,选择性蒸馏和两步加氢处理以除去硫化氢和/或氨的步骤。 由于环境影响小,芳香油在农用配方中很有用。

    Apparatus and method for determining pitch and azimuth from satellite signals
    8.
    发明授权
    Apparatus and method for determining pitch and azimuth from satellite signals 有权
    用于从卫星信号确定音调和方位的装置和方法

    公开(公告)号:US06211821B1

    公开(公告)日:2001-04-03

    申请号:US09398530

    申请日:1999-09-16

    申请人: Thomas J. Ford

    发明人: Thomas J. Ford

    IPC分类号: G01S502

    CPC分类号: G01S19/55 G01S19/22

    摘要: A navigational apparatus includes a receiver, two antennas, and a computational unit to receive satellite positional signals and provides corrected position, azimuth, and pitch readings. The computational unit: determines differences in the signal carrier measurements output by the receiver; rejects or accepts carrier ambiguity candidates based on predefined criteria; and estimates multipath on successive pairs of carrier observations to obtain the corrected readings.

    摘要翻译: 导航装置包括接收器,两个天线和用于接收卫星位置信号的计算单元,并且提供校正的位置,方位角和俯仰读数。 计算单元:确定由接收机输出的信号载波测量值的差异; 基于预定标准拒绝或接受载体模糊候选者; 并估计连续的载波观测对上的多路径以获得校正的读数。

    Crimped staple fiber
    10.
    发明授权
    Crimped staple fiber 失效
    卷曲短纤维

    公开(公告)号:US4547934A

    公开(公告)日:1985-10-22

    申请号:US575630

    申请日:1984-01-31

    申请人: Thomas J. Ford

    发明人: Thomas J. Ford

    IPC分类号: D01G1/04 D02G1/12

    CPC分类号: D02G1/125 D01G1/04

    摘要: Process and apparatus are provided for the preparation of crimped staple fibers. By automatically adjusting the pressure on the stuffer crimper box discharge means as a function of staple cutter speed, a crimped staple product with uniform fiber-to-fiber cohesion level is obtained.

    摘要翻译: 提供了制备卷曲短纤维的工艺和设备。 通过自动调节作为切割刀速度的函数的填充卷曲机排出装置的压力,获得具有均匀的纤维 - 纤维内聚力水平的卷曲的短纤维制品。