会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Wide area differential GPS reference system and method
    • 广域差分GPS参考系和方法
    • US5621646A
    • 1997-04-15
    • US681087
    • 1996-07-22
    • Per K. EngeTodd F. WalterYi-Chung Chao
    • Per K. EngeTodd F. WalterYi-Chung Chao
    • G01S1/00G01S5/14G01S19/32G01S19/44G01S5/02
    • G01S19/05G01S19/07
    • A GPS reference system and corresponding method utilizing a network of reference stations and a master station. Each reference station receives GPS signals from GPS satellites it observes and computes in response a pseudo-range residual for each GPS satellite it observes. The master station is in communication with the reference stations to receive the computed pseudo-range residuals and comprises a pseudo-range residual synchronizer, an ephemeris and clock correction estimator for each GPS satellite observed by the reference stations, and a transmitter. The pseudo-range residual synchronizer is responsive to the received pseudo-range residuals in order to compute clock differences between the reference stations and remove the clock differences from the received pseudo-range residuals so as to synchronize them. Each ephemeris and clock correction estimator computes an ephemeris correction and a clock correction for the corresponding GPS satellite in response to each synchronized pseudo-range residual for the corresponding GPS satellite. The transmitter transmits to users the computed ephemeris and clock corrections for each GPS satellite observed by the reference stations.
    • GPS参考系和相应的方法利用参考站和主站网络。 每个参考站接收来自GPS卫星的GPS信号,它观察并根据其观察到的每个GPS卫星的伪距残差来计算。 主站与参考站通信以接收所计算的伪距离残差,并且包括伪距离残差同步器,由参考站观测的每个GPS卫星的星历和时钟校正估计器以及发射机。 伪距离残余同步器响应于接收到的伪距离残差,以便计算参考站之间的时钟差异,并且从接收到的伪距残差中消除时钟差,从而使它们同步。 每个星历和时钟校正估计器响应于相应的GPS卫星的每个同步伪距残差来计算对应的GPS卫星的星历校正和时钟校正。 发射机向用户发送由参考站观测到的每个GPS卫星的计算星历和时钟校正。
    • 10. 发明申请
    • Method and system for multiple route navigation
    • 多路径导航的方法和系统
    • US20060116818A1
    • 2006-06-01
    • US11004198
    • 2004-12-01
    • Yi-Chung ChaoRobert RennardSalman Dhanani
    • Yi-Chung ChaoRobert RennardSalman Dhanani
    • G01C21/30
    • G08G1/09685G01C21/3415G01C21/3446G08G1/096811G08G1/096816
    • Method and system for providing multiple route navigation guidance. The system comprises a client integrated with a mobile communication device (e.g. PDA, cellular telephone, etc.) and a server communicating via wireless carriers and networks. The server obtains a user's initial position, a user-designated destination, and calculates multiple routes from the user's initial position to the destination. The client displays turn-by-turn navigation instructions to the user using the multiple routes sent by the server. If the client detects a deviation from the multiple routes, the client sends a request for new multiple routes to the server. Then, the server recalculates new multiple routes from the user's current position to the destination and sends navigation information related to the new multiple routes to the client.
    • 提供多路径导航指导的方法和系统。 该系统包括与移动通信设备(例如,PDA,蜂窝电话等)集成的客户端以及经由无线运营商和网络进行通信的服务器。 服务器获取用户的初始位置,用户指定的目的地,并计算从用户的初始位置到目的地的多条路线。 客户端使用服务器发送的多条路由向用户显示转弯导航指令。 如果客户端检测到多个路由的偏差,则客户端向服务器发送新的多条路由请求。 然后,服务器重新计算从用户当前位置到目的地的新的多条路由,并将与新的多条路由相关的导航信息发送给客户端。