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    • 5. 发明授权
    • Vehicle location system
    • 车辆定位系统
    • US5777580A
    • 1998-07-07
    • US396977
    • 1995-03-01
    • James M. JankyDavid G. Bird
    • James M. JankyDavid G. Bird
    • G01S5/00G01S5/14G01S13/87G01S19/17G01S19/34G01S19/35G01S3/02
    • G01S1/045G01S13/825G01S13/878G01S19/17G01S5/0009G01S2205/002G01S2205/008
    • Method and apparatus for determining vehicle present location using a location determination system (LDS), such as GPS, GLONASS, Loran or an inertial navigation system, that receives LDS signals from two or more sources. An LDS signal antenna and receiver/processor, an interrogation signal (IS) receiver means and IS responder means are electrically connected and carried on the vehicle. When a vehicle trigger event occurs, a specified vehicle IS is broadcast and is received by the IS receiver means. The IS receiver means causes the LDS receiver/processor to obtain vehicle present location information and to provide such information for the IS responder means, for transmission to an IS contact receiver (selected based upon vehicle present location). The IS receiver means and IS responder means are independently selected to be a cellular phone receiver, a paging signal receiver, a WAN/LAN workstation, or an Earth-satellite-Earth radiowave link, such as ORBCOMM.SM.. Optionally, the LDS receiver/processor is kept in a "sleeper" mode, to conserve power until the IS receiver receives and responds to the specified IS, or is periodically activated to update the LDS antenna present location. Presence of the LDS equipment, IS receiver means and/or IS responder means are concealed on the vehicle. In another embodiment, a trigger event sensor is positioned on the vehicle and the responder means is caused to transmit to the vehicle present location information when a vehicle trigger event occurs, such as unauthorized movement of or entry into the vehicle, or collision of the vehicle.
    • 使用诸如GPS,GLONASS,Loran或惯性导航系统的位置确定系统(LDS)来确定车辆当前位置的方法和装置,其接收来自两个或更多个源的LDS信号。 LDS信号天线和接收器/处理器,询问信号(IS)接收器装置和IS应答器装置在车辆上电连接并携带。 当车辆触发事件发生时,指定的车辆IS被广播并被IS接收机装置接收。 IS接收机装置使得LDS接收器/处理器获得车辆当前位置信息,并为IS响应器装置提供这样的信息,以便传输到IS接触式接收机(基于车辆当前位置选择)。 IS接收机装置和IS应答器装置被独立地选择为蜂窝电话接收机,寻呼信号接收机,WAN / LAN工作站或地球 - 卫星地球无线电波链路,例如ORBCOMM SM。 可选地,LDS接收机/处理器保持在“睡眠”模式,以节省功率,直到IS接收机接收并响应指定的IS,或者周期性地激活以更新LDS天线存在位置。 LDS设备,IS接收装置和/或IS应答器装置的存在被隐藏在车辆上。 在另一个实施例中,触发事件传感器被定位在车辆上,并且当发生车辆触发事件时,例如车辆的未经授权的移动或进入车辆或车辆的碰撞,使响应器装置向车辆发送当前位置信息 。
    • 6. 发明授权
    • Location of missing vehicles
    • US5418537A
    • 1995-05-23
    • US978272
    • 1992-11-18
    • David G. Bird
    • David G. Bird
    • G01S5/00G01S5/14G01S13/87G01S19/17G01S19/34G01S19/35H04B7/185G01S5/02
    • G01S19/17G01S1/045G01S13/825G01S13/878G01S5/0009G01S2205/002G01S2205/008
    • Method and apparatus for determining the present location of a missing vehicle, such as an automobile or marine vessel, using a Global Positioning System that receives GPS signals from two or more GPS satellites. A GPS antenna, GPS signal receiver/processor, a paging responder, a cellular telephone and associated antenna, and a controller/modem are installed in a vehicle and electrically connected together. When the vehicle is determined to be missing, because the vehicle has been misplaced, lost or stolen, the vehicle owner or operator contacts a vehicle location service center, which broadcasts a paging request that is received by the paging responder on the vehicle. The paging responder causes the controller/modem to interrogate the GPS receiver/processor to determine the present location of the vehicle. The receiver/processor determines the present vehicle location and notifies the controller/modem of such location. The controller/modem then causes the cellular telephone to notify the vehicle location service center of the present location of the missing vehicle so that the vehicle can be recovered. The GPS signal receiver/processor and GPS antenna can be replaced by a receiver/processor and associated antenna that works with a LORAN system, or with a group of gyroscopes or local magnetic field sensors mounted on the vehicle. Optionally, the signal receiver/processor is kept in a "sleeper" mode to conserve power, until the controller/modem receives a paging request for its present location. Optionally, the receiver/processor is periodically activated to determine, and thus update, its present location. Optionally, the presence of the GPS antenna and/or the cellular telephone antenna on the vehicle is concealed. In another embodiment, a sensor is positioned on the vehicle, and the cellular telephone is caused to transmit to the vehicle location center a message containing information on the present location of the vehicle when the sensor senses occurrence of a selected trigger event, such as unauthorized movement of, or breaking into, the vehicle.
    • 7. 发明申请
    • GNSS Rover having Subscribed Precision
    • 具有订阅精度的GNSS罗孚
    • US20140132443A1
    • 2014-05-15
    • US13675242
    • 2012-11-13
    • David G. Bird
    • David G. Bird
    • G01S19/40
    • G01S19/43G01S19/04
    • This application discloses a GNSS rover having a data receiver, a position processor and a vector error reverser. The data receiver receives GNSS position-determination reference data based on a reference erroneous position having one or more keyed intentional errors made confidential with confidential error keys. The position processor uses the GNSS position-determination reference data to determine a rover erroneous position corresponding to the reference erroneous position. The vector error reverser uses confidential access to at least one confidential error key to reverse the corresponding confidential keyed intentional error in the rover erroneous position to determine a subscribed rover position.
    • 该应用公开了具有数据接收器,位置处理器和向量误差反向器的GNSS漫游器。 数据接收机基于具有对机密错误密钥进行保密的一个或多个带键的有意错误的参考错误位置来接收GNSS位置确定参考数据。 位置处理器使用GNSS位置确定参考数据来确定与参考错误位置相对应的流动站错误位置。 向量错误反向器使用机密访问至少一个秘密错误密钥来反转流动站错误位置中相应的秘密键入故意错误,以确定订阅的流动站位置。