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公开(公告)号：US07840180B2
公开(公告)日：2010-11-23
申请号：US11615774
申请日：2006-12-22
申请人： Harold A. Rosen
发明人： Harold A. Rosen
IPC分类号： H04B7/185
CPC分类号： H04N7/20 , H04B7/18523
摘要： A system includes a satellite fleet (102, FIG. 1), in which each satellite receives uplink signals from an uplink hub (104), and transmits downlink signals in at least one directed beam (112). In an embodiment, downlink signals include television content, which is transmitted within a frequency range between about 3.7 and 4.2 Gigahertz. The satellites follow Molniya orbits (1001-1006, FIG. 10), orbit nodes are equally separated, and the satellite phasing is maintained to provide continuous communication within a coverage area. A system also includes user equipment systems (1300, FIG. 13), which include highly-directional, non-tracking antennas (1302) adapted to receive the downlink signals. In an embodiment, a method includes the satellites maintaining orbit phasings, with respect to other satellites, so that the satellite enters an active orbit segment and initiates transmission of downlink signals as a second satellite exits an active orbit segment and ceases transmission of the downlink signals.
摘要翻译： 系统包括卫星机队（102，图1），其中每个卫星从上行链路集线器（104）接收上行链路信号，并且在至少一个有向波束（112）中发送下行链路信号。 在一个实施例中，下行链路信号包括在约3.7和4.2吉赫兹之间的频率范围内传输的电视内容。 卫星遵循Molniya轨道（1001-1006，图10），轨道节点被相等地分离，并且保持卫星定相以在覆盖区域内提供连续的通信。 系统还包括用户设备系统（1300，图13），其包括适于接收下行链路信号的高度方向性的非跟踪天线（1302）。 在一个实施例中，一种方法包括卫星相对于其他卫星维持轨道相位，使得当第二卫星退出有源轨道段并停止下行链路信号的传输时，卫星进入有源轨道段并发起下行链路信号的传输 。
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公开(公告)号：US20080237399A1
公开(公告)日：2008-10-02
申请号：US11693645
申请日：2007-03-29
CPC分类号： B64G1/1085 , B64G1/242 , B64G1/26 , B64G2001/643
摘要： A method for implementing a satellite fleet includes launching a group of satellites within a launch vehicle. In an embodiment, the satellites are structurally connected together through satellite outer load paths. After separation from the launch vehicle, nodal separation between the satellites is established by allowing one or more of the satellites to drift at one or more orbits having apogee altitudes below an operational orbit apogee altitude. A satellite is maintained in an ecliptic normal attitude during its operational life, in an embodiment. The satellite's orbit is efficiently maintained by a combination of axial, radial, and canted thrusters, in an embodiment. Satellite embodiments include a payload subsystem, a bus subsystem, an outer load path support structure, antenna assembly orientation mechanisms, an attitude control subsystem adapted to maintain the satellite in the ecliptic normal attitude, and an orbit maintenance/propulsion subsystem adapted to maintain the satellite's orbit.
摘要翻译： 实施卫星舰队的方法包括在运载火箭中发射一组卫星。 在一个实施例中，卫星在结构上通过卫星外部负载路径连接在一起。 在与运载火箭分离之后，通过允许一个或多个卫星在具有低于操作轨道远地点高度的远地点高度的一个或多个轨道上漂移来建立卫星之间的节点间隔。 在一个实施例中，卫星在其使用寿命期间保持为黄道正常姿态。 在一个实施例中，通过轴向，径向和倾斜推进器的组合有效地维持卫星的轨道。 卫星实施例包括有效载荷子系统，总线子系统，外部负载路径支持结构，天线组件定向机构，适于将卫星维持在黄道正常态度的姿态控制子系统，以及适于维持卫星的卫星的维护/推进子系统 轨道。
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公开(公告)号：US06684070B1
公开(公告)日：2004-01-27
申请号：US09670987
申请日：2000-09-26
申请人： Harold A. Rosen , Arnold L. Berman , Chak M. Chie
发明人： Harold A. Rosen , Arnold L. Berman , Chak M. Chie
IPC分类号： H04Q720
CPC分类号： H04B7/2125
摘要： A TDMA beacon for satellite system synchronization includes a beacon signal generator and a time division multiplexed switch. The beacon signal generator generates a beacon signal. The TDM switch is coupled to the beacon signal generator and receives the beacon signal. The TDM switch embeds the beacon signal with a data signal into a TDMA signal. The TDMA signal is then broadcast to a ground station where the beacon signal may be extracted from the TDMA signal and used to synchronize a terminal with the satellite system.
摘要翻译： 用于卫星系统同步的TDMA信标包括信标信号发生器和时分复用开关。 信标信号发生器产生信标信号。 TDM开关耦合到信标信号发生器并接收信标信号。 TDM交换机将具有数据信号的信标信号嵌入到TDMA信号中。 TDMA信号然后被广播到地面站，其中可以从TDMA信号中提取信标信号，并用于使终端与卫星系统同步。
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公开(公告)号：US06441785B1
公开(公告)日：2002-08-27
申请号：US09550785
申请日：2000-04-17
申请人： Harold A. Rosen , Steven O. Lane
发明人： Harold A. Rosen , Steven O. Lane
IPC分类号： G01S316
CPC分类号： H01Q3/26 , H01Q25/008
摘要： An antenna for scanning beams in only one common angular direction or angular path includes feed elements each providing a component beam and fixed beam combiners for combining the component beams into fixed beams. The fixed beam combiners combine the component beams in a first angular direction to form the fixed beams. Variable beam combiners combine the fixed beams into scanning beams. The variable beam combiners combine the fixed beams into the scanning beams to scan the scanning beams in a second common angular direction.
摘要翻译： 用于仅在一个共同的角度方向或角度路径上扫描光束的天线包括每个提供分量光束的馈送元件和用于将分量光束组合成固定光束的固定光束组合器。 固定光束组合器在第一角度方向上组合分量光束以形成固定光束。 可变光束组合器将固定光束组合成扫描光束。 可变光束组合器将固定光束组合成扫描光束以沿第二共同角度方向扫描扫描光束。
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公开(公告)号：US06430393B1
公开(公告)日：2002-08-06
申请号：US09379173
申请日：1999-08-23
IPC分类号： H04B7185
CPC分类号： H04B7/1851
摘要： An improved satellite communication device and system are provided. The satellite communication device uses yaw or roll-yaw steering to linearize angular track of uplink cells; one-dimensional linear “ratcheting” in an uplink antenna to maintain resource allocation of uplink cells along antenna columns; phased-array downlink antennas which can track earth-fixed downlink cells while compensating for the yaw (or roll-yaw) satellite steering; and variable rate TDMA service among downlink cells in a footprint. As a result, system overhead for performing new resource allocations between satellite handovers is minimized, thereby reducing resource management and increasing system capacity. Flexible bandwidth/capacity assignment of both uplink and downlink resources to earth locations via linear cell ratcheting, uplink RF peaking switch, and data-driven variable-TDMA downlink phased-arrays, is provided.
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公开(公告)号：US06421528B1
公开(公告)日：2002-07-16
申请号：US09301967
申请日：1999-04-29
申请人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
发明人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
IPC分类号： H04J1302
CPC分类号： H04B7/18513 , H04B7/2041 , Y02D70/446
摘要： A system and method for adjusting satellite communication signal transmit power for signals transmitted to a localized region within a satellite coverage area utilize real-time information on weather conditions (172) and/or actual path losses (174) within the localized regions to adjust the effective isotropic radiated power (EIRP) of the satellite beams (188) to minimize the total radio frequency (RF) power required for transmission. The transmission system may be realized using a variety of antenna types for transmitting spot beams and/or area coverage beams. Representative antenna implementations include multi-beam antennas having a low-level beamforming network and hybrid matrix amplifier system, phased-array with independent input amplitude control and beamsteering for each beam, and a phased-array feeding a confocal imaging system for single broadcast beam per polarization. The present invention allows for the reduction of RF transmit power to achieve the same communications performance enabling either increases in satellite functionality and/or an increase in total capacity of the satellite communication system.
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公开(公告)号：US6144128A
公开(公告)日：2000-11-07
申请号：US905732
申请日：1997-08-04
申请人： Harold A. Rosen
发明人： Harold A. Rosen
IPC分类号： B60K6/10 , B60K6/30 , B60K8/00 , B60L11/16 , B62M1/10 , F16F15/30 , F16F15/305 , F16F15/315 , H02K5/173 , H02K7/02 , H02K7/08 , H02K7/09 , H02K7/18 , H02K9/19
CPC分类号： B60K6/48 , B60L11/16 , B62M1/10 , F16F15/302 , F16F15/305 , F16F15/315 , H02K11/048 , H02K5/173 , H02K7/025 , H02K7/083 , H02K9/19 , B60K6/105 , H02K7/09 , Y02E60/16 , Y02T10/6204 , Y02T10/6221 , Y02T10/6282 , Y02T10/641 , Y02T10/7027 , Y02T10/7033 , Y10S903/96 , Y10T74/2119
摘要： A flywheel safety support system isolates the flywheel and its motor-generator from the driving environment of an electrically powered motor vehicle. A suitable liquid, placed between the outer and vacuum housings of the flywheel assembly, provides buoyancy and damping to the vacuum housing, cooling of the motor-generator, and serves as one of the barriers to rotor energy and angular momentum transfer in the event of an accident or failure. During normal operation, a shearable mechanical gimbal system keeps the vacuum housing centered in the outer housing, reacts the spin moments generated by the motor-generator, and provides a path for the electrical leads into the vacuum housing. In the event of bearing seizure or rotor failure, the mechanical gimbal will shear and allow the vacuum housing to gradually spin down against the fluid. A fiber barrier provides an additional layer of protection to passengers.
摘要翻译： 飞轮安全支持系统将飞轮及其电动发电机与电动机动车辆的行驶环境隔离开来。 放置在飞轮组件的外壳和真空壳体之间的合适液体为真空壳体提供浮力和阻尼，电动发电机的冷却，并且作为转子能量和角动量传递的障碍之一，在发生 发生事故或失败。 在正常操作期间，可剪切的机械万向节系统将真空壳体保持在外壳中心，使电动发电机产生的自旋力矩反应，并为电气引线进入真空壳体提供路径。 在轴承卡死或转子故障的情况下，机械万向架将剪切并允许真空壳体逐渐向下旋转流体。 纤维屏障为乘客提供了额外的保护层。
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公开(公告)号：US5816538A
公开(公告)日：1998-10-06
申请号：US322859
申请日：1994-10-13
CPC分类号： G05D1/0883 , B64G1/24 , B64G1/28 , B64G1/281 , B64G1/288 , B64G1/38 , B64G2001/245
摘要： The invention provides a method for controlling the precession of a spinning spacecraft (20) which allows the spacecraft body to respond to an input torque without the nutation normally attendant when an input torque is applied about one transverse axis to accelerate a spinning spacecraft about that one axis. Dynamic decoupling eliminates nutation through the impression of additional derived feedback torques (44,46) to the input torque control of a spinning spacecraft to oppose or cancel the intrinsic cross-coupling terms (34,36) of the spinning spacecraft's gyrodynamics that give rise to the nutation. Thus, a single spacecraft design can provide the benefits of a spinning bus such as a simplified thruster control system for orbit control, improved temperature environment for many payload elements, spin-averaging of body-fixed disturbances and gyro drift errors, and propellant management as well as the major benefit of a body-stabilized or non-rotation spacecraft design which is freedom from nutation and hence improved performance.
摘要翻译： 本发明提供了一种用于控制旋转航天器（20）的进动的方法，其允许航天器主体响应输入扭矩而不需要在一个横轴上施加输入扭矩时通常伴随的章动，从而加速关于该旋转航空器的旋转航天器 轴。 动态去耦消除了通过额外的派生反馈转矩（44,46）到旋转航天器的输入转矩控制的印象，以反对或消除旋转航天器的陀螺动力学的内在交叉耦合术语（34,36），从而产生 章动 因此，单个航天器设计可以提供旋转总线的优点，例如用于轨道控制的简化的推进器控制系统，用于许多有效载荷元件的改善的温度环境，身体固定的扰动的旋转平均和陀螺仪漂移误差，以及推进剂管理 以及身体稳定或非旋转航天器设计的主要优点，其免于章动，从而改善性能。
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9.发明授权
公开(公告)号：US5770909A
公开(公告)日：1998-06-23
申请号：US764589
申请日：1996-12-13
CPC分类号： H02K11/042 , H02K19/12 , H02K19/26 , H02P25/024 , H02P9/38 , H02P2101/30
摘要： A field control system for a wound rotor synchronous motor-generator used in electrically powered automobiles is capable of optimizing the performance of the motor-generator for all driving conditions. Using a rotary transformer to transmit power across the rotational boundary, it has no wearing parts and is silent. Preferably, the field control system has common elements with the controller which generates the stator currents of the synchronous motor-generator.
摘要翻译： 用于电动汽车的绕组转子同步电动发电机的现场控制系统能够在所有驾驶条件下优化电动发电机的性能。 使用旋转变压器在整个旋转边界传输动力，没有易损件并且无声。 优选地，现场控制系统具有与产生同步电动发电机的定子电流的控制器的公共元件。
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10.发明授权Magnetic bearing system including a control system for a flywheel and method for operating same 失效磁轴承系统，包括用于飞轮的控制系统及其操作方法
公开(公告)号：US5708312A
公开(公告)日：1998-01-13
申请号：US752593
申请日：1996-11-19
CPC分类号： F16C32/0451 , F16C32/0446 , F16F15/315 , H02K7/025 , H02K7/09 , F16C2361/55 , Y02E60/16 , Y10T74/2119 , Y10T74/2127
摘要： A bearing system for positioning and supporting a rotor having a vertical shaft coincident with a main rotation axis included in a flywheel used for energy storage and high surge power in vehicular applications includes first and second radial force generators disposed in a first plane perpendicular to the rotation axis of the rotor, the first and second force generators including only electromagnets, third and fourth radial force generators disposed in a second plane perpendicular to the rotation axis of the rotor, the third and fourth force generators including only electromagnets, and upper and lower axial force generators each containing an electromagnet and a permanent magnet. According to one aspect of the bearing system, each of the force generators includes control circuitry having simple and complex lead networks so as to permit the force generators to rapidly respond to vehicular transients while maintaining a desired bearing stiffness. The bearing system also includes upper and lower touchdown ball bearings which are engaged only when the first through fourth radial force generators are unable to maintain the rotor in a predetermined cylindrical volume within the flywheel. A method for controlling the bearing system is also described.
摘要翻译： 一种用于定位和支撑转子的轴承系统，其具有与包括在用于能量存储的飞轮中的主旋转轴线重合的垂直轴，并且在车辆应用中具有高浪涌功率的第一和第二径向力发生器，其布置在垂直于旋转的第一平面中 第一和第二力产生器仅包括电磁体，第三和第四径向力发生器设置在垂直于转子的旋转轴线的第二平面中，第三和第四力产生器仅包括电磁体，上下轴向 力发生器各自包含电磁体和永磁体。 根据轴承系统的一个方面，每个力发生器包括具有简单且复杂的引线网络的控制电路，以便允许力发生器在保持期望的轴承刚度的同时快速响应车辆瞬变。 轴承系统还包括仅当第一至第四径向力发生器不能将转子保持在飞轮内的预定圆柱体积中时接合的上下接触球轴承。 还描述了一种用于控制轴承系统的方法。
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