Satellite attitude determination using GPS and intersatellite line of
sight communications
    1.
    发明授权
    Satellite attitude determination using GPS and intersatellite line of sight communications 失效
    使用GPS和卫星间视距通信的卫星姿态测定

    公开(公告)号:US5959576A

    公开(公告)日:1999-09-28

    申请号:US909781

    申请日:1997-08-12

    申请人: Jeffrey R. Ring

    发明人: Jeffrey R. Ring

    摘要: The attitude (yaw, pitch and roll) of a home satellite is determined using position signals, derived from a GPS receiver on the home satellite and GPS receiver on other satellites, that are transmitted between the home satellite and the other satellites by an intersatellite communications link using gimbaled transceivers on the satellites. The home satellite determines its attitude from the gimbal elevation and azimuth and the position vectors between the satellites.

    摘要翻译: 家庭卫星的姿态(偏航,俯仰和滚动)使用从家庭卫星上的GPS接收机和其他卫星上的GPS接收机得到的位置信号,通过卫星间通信在家庭卫星和其他卫星之间传输 在卫星上使用万向收发器进行链接。 家庭卫星从云台的高程和方位角以及卫星之间的位置矢量确定其姿态。

    Satellite attitude adjustment for GPS initialization

    公开(公告)号:US06621453B2

    公开(公告)日:2003-09-16

    申请号:US09960241

    申请日:2001-09-21

    申请人: Jeffrey R. Ring

    发明人: Jeffrey R. Ring

    IPC分类号: G01S502

    CPC分类号: G01S19/14 G01S19/53

    摘要: By using the GPS satellite transmitted signals that are tracked on a satellite and those that should be tracked but are not due to the attitude of the satellite and rotating the satellite, two estimations of satellite attitude are made that are used to change the satellite attitude so that all the GPS signals are tracked.

    Navigation system with minimal on-board processing
    3.
    发明授权
    Navigation system with minimal on-board processing 有权
    导航系统,板载处理最少

    公开(公告)号:US07890260B2

    公开(公告)日:2011-02-15

    申请号:US11264409

    申请日:2005-11-01

    申请人: Jeffrey R. Ring

    发明人: Jeffrey R. Ring

    IPC分类号: G01C21/00

    CPC分类号: G01C21/16

    摘要: A navigation system that provides a position estimate. In one embodiment, a method includes integrating an acceleration estimate in each of three dimensions. Subtracting a GPS velocity in each of the dimensions from the integrated acceleration estimate in each dimension to determine a velocity noise error in each dimension. Filtering the velocity noise error in each dimension. Adding the filtered velocity noise error to the integrated acceleration estimate in each dimension to obtain a velocity estimate in each dimension. Integrating the velocity estimate in each dimension to determine an integrated velocity estimate in each dimension. Subtracting a GPS position in each dimension from the integrated velocity estimate in each dimension to determine a position noise error in each dimension. Filtering the position noise error in each dimension and adding the filtered position noise error in each dimension to the integrated velocity estimate to obtain a position estimate in each dimension.

    摘要翻译: 提供位置估算的导航系统。 在一个实施例中,一种方法包括在三维中的每一个中集成加速度估计。 从每个维度的积分加速度估计中减去每个维度中的每个维度中的GPS速度,以确定每个维度中的速度噪声误差。 过滤每个维度的速度噪声误差。 将滤波后的速度噪声误差加到每个维度的积分加速度估计中,以获得每个维度的速度估计。 在每个维度上整合速度估计,以确定每个维度中的综合速度估计。 从每个维度的积分速度估计中减去每个维度中的GPS位置,以确定每个维度中的位置噪声误差。 过滤每个维度中的位置噪声误差,并将每个维度中的滤波位置噪声误差加到积分速度估计中,以获得每个维度中的位置估计。

    Adjusting processor clock information using a clock drift estimate
    4.
    发明授权
    Adjusting processor clock information using a clock drift estimate 有权
    使用时钟漂移估计调整处理器时钟信息

    公开(公告)号:US07889125B2

    公开(公告)日:2011-02-15

    申请号:US11080345

    申请日:2005-03-15

    IPC分类号: G01S19/38

    CPC分类号: G01S19/235 G01S19/47

    摘要: A navigation system comprises a global positioning satellite receiver to receive at least one global positioning satellite signal and to output global positioning satellite information. The navigation system further comprises a programmable processor, communicatively coupled to the global positioning satellite receiver, to execute software. The navigation system further comprises a clock, communicatively to the programmable processor, to output processor clock information. The software estimates an amount of drift in the processor clock information using the GPS information and adjusts the processor clock information for the amount of drift in order to generate adjusted processor clock information. The software generates a navigation solution as a function of at least the global positioning satellite information and the adjusted processor clock information.

    摘要翻译: 导航系统包括全球定位卫星接收机,用于接收至少一个全球定位卫星信号并输出​​全球定位卫星信息。 导航系统还包括可通信地耦合到全球定位卫星接收机的可编程处理器,以执行软件。 导航系统还包括通信地连接到可编程处理器的时钟,以输出处理器时钟信息。 软件使用GPS信息估计处理器时钟信息中的漂移量,并调整漂移量的处理器时钟信息,以便产生经调整的处理器时钟信息。 该软件根据至少全球定位卫星信息和经调整的处理器时钟信息产生导航解决方案。

    Electromechanical actuator controller
    5.
    发明授权
    Electromechanical actuator controller 失效
    机电执行器控制器

    公开(公告)号:US5367237A

    公开(公告)日:1994-11-22

    申请号:US898148

    申请日:1992-06-15

    摘要: An improved electromechanical actuator controller or system, counteracting the control stability degradation caused by motor interaction with the load dynamics (actuator compliance), having decreased sensor noise sensitivity responses and minimal compensation implementation requirements. The controller includes a motor rate sensor and an actuator position sensor, whose signal outputs are combined in a complimentary filter to blend the dissimilar sensor signals to achieve the desired control signal. The complementary filter time constant is chosen to result in a stabilizing quadratic phase lead which allows the controller bandwidth to be increased to provide the desired faster electromechanical actuator controller time responses.

    摘要翻译: 改进的机电致动器控制器或系统,抵消由电动机与负载动态(执行器顺应性)相互作用引起的控制稳定性降低,具有降低的传感器噪声灵敏度响应和最小的补偿实现要求。 该控制器包括电动机速率传感器和致动器位置传感器,其信号输出组合在互补滤波器中以混合不同的传感器信号以实现期望的控制信号。 选择互补滤波器时间常数以产生稳定的二次相位导线,其允许增加控制器带宽以提供期望的更快的机电致动器控制器时间响应。