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    • 1. 发明授权
    • Intelligent passive navigation system for back-up and verification of GPS
    • 智能无源导航系统,用于GPS的后备和验证
    • US06917880B2
    • 2005-07-12
    • US10615526
    • 2003-07-08
    • Jameson BerginJ. Doss HalseyJohn Don Carlos
    • Jameson BerginJ. Doss HalseyJohn Don Carlos
    • G01S1/00G01S7/41G01S13/06G01S13/522G01S13/60G01S13/86G01S13/87G01C21/26
    • G01S7/412G01S13/06G01S13/522G01S13/60G01S13/86G01S13/87G01S19/15G01S19/23G01S19/48
    • A passive navigation system for an airborne platform includes an on-board computer having a database that contains preprogrammed information regarding pre-existing ground-based signal emitters (e.g. cell-phone, television and radio broadcast transmitters). For each emitter, the database includes the geolocation of the emitter and identifying signal characteristic(s) of each emitter's signal such as frequency, bandwidth and strength. An antenna array and digital receiver cooperate with the computer on the platform to passively receive signals from the emitters and determine a direction of arrival (DOA) for selected signals. The computer also extracts identifying signal characteristic(s) from selected received signals and matches them against the database information to ascertain the geolocation of the emitter that corresponds to the received signal. The platform location is then calculated from the DOA(s) and emitter geolocations using a triangulation-type algorithm. Also, preprogrammed site-specific terrain scattering information can be compared to observed scattered signals to enhance system accuracy.
    • 用于机载平台的被动导航系统包括车载计算机,其具有包含关于先前存在的基于地面的信号发射器(例如,手机,电视和无线电广播发射机)的预编程信息的数据库。 对于每个发射器,数据库包括发射器的地理位置和识别每个发射器信号的频率,带宽和强度的信号特性。 天线阵列和数字接收机与平台上的计算机协作,被动地接收来自发射器的信号,并确定所选信号的到达方向(DOA)。 计算机还从所选接收信号中提取识别信号特征,并将其与数据库信息相匹配,以确定与接收信号相对应的发射器的地理位置。 然后使用三角测量型算法从DOA和发射器地理位置计算平台位置。 此外,预编程的场地特定地形散射信息可以与观察到的散射信号进行比较,以提高系统精度。
    • 3. 发明申请
    • SYSTEM AND METHOD TO POSITION REGISTER AND PHASE SYNCHRONIZE A MONITORING NETWORK
    • 系统和位置寄存器的方法和相位同步监控网络
    • US20090027272A1
    • 2009-01-29
    • US11782825
    • 2007-07-25
    • John Don Carlos
    • John Don Carlos
    • G01S5/04
    • G01S13/87G01C21/206G01S5/0221G01S5/0289G01S2007/403G01S2007/4034G01S2007/4082
    • A system is disclosed for position registration and phase synchronization of monitors in a monitor network. Each monitor includes a transceiver having a transponder circuit with a calibrated transponder delay. To measure a distance between monitors, an oscillator at a first monitor generates a measurement signal which is transponded by a second monitor for receipt by the first monitor. A phase difference between the received signal and the first monitor oscillator is determined and used with the signal velocity and transponder delay to calculate the distance between monitors. The measured distances are combined with other data (e.g. monitor elevations) to calculate monitor locations. A phase delay is then measured by transmitting a signal from the first to the second monitor for comparison with the second monitor oscillator. A phase difference between oscillators (for use in synchronizing the monitors) is then calculated using the phase delay, separation distance and signal velocity.
    • 公开了用于监视器网络中的监视器的位置注册和相位同步的系统。 每个监视器包括具有经校准的应答器延迟的应答器电路的收发器。 为了测量监视器之间的距离,第一监视器处的振荡器产生由第二监视器转发的测量信号,以由第一监视器接收。 确定接收信号和第一监视振荡器之间的相位差,并与信号速度和应答器延迟一起使用以计算显示器之间的距离。 测量的距离与其他数据(例如监视器高程)组合以计算监视器位置。 然后通过发送从第一监视器到第二监视器的信号来与第二监视振荡器进行比较来测量相位延迟。 然后使用相位延迟,间隔距离和信号速度来计算振荡器之间的相位差(用于同步监视器)。
    • 4. 发明授权
    • System and method to position register and phase synchronize a monitoring network
    • 定位寄存器和相位同步监控网络的系统和方法
    • US07663535B2
    • 2010-02-16
    • US11782825
    • 2007-07-25
    • John Don Carlos
    • John Don Carlos
    • G01S13/06G01S13/36G01S13/00
    • G01S13/87G01C21/206G01S5/0221G01S5/0289G01S2007/403G01S2007/4034G01S2007/4082
    • A system is disclosed for position registration and phase synchronization of monitors in a monitor network. Each monitor includes a transceiver having a transponder circuit with a calibrated transponder delay. To measure a distance between monitors, an oscillator at a first monitor generates a measurement signal which is transponded by a second monitor for receipt by the first monitor. A phase difference between the received signal and the first monitor oscillator is determined and used with the signal velocity and transponder delay to calculate the distance between monitors. The measured distances are combined with other data (e.g. monitor elevations) to calculate monitor locations. A phase delay is then measured by transmitting a signal from the first to the second monitor for comparison with the second monitor oscillator. A phase difference between oscillators (for use in synchronizing the monitors) is then calculated using the phase delay, separation distance and signal velocity.
    • 公开了用于监视器网络中的监视器的位置注册和相位同步的系统。 每个监视器包括具有经校准的应答器延迟的应答器电路的收发器。 为了测量监视器之间的距离,第一监视器处的振荡器产生由第二监视器转发的测量信号,以由第一监视器接收。 确定接收信号和第一监视振荡器之间的相位差,并与信号速度和应答器延迟一起使用以计算显示器之间的距离。 测量的距离与其他数据(例如监视器高程)组合以计算监视器位置。 然后通过发送从第一监视器到第二监视器的信号来与第二监视振荡器进行比较来测量相位延迟。 然后使用相位延迟,间隔距离和信号速度来计算振荡器之间的相位差(用于同步监视器)。