Position information providing system indoor transmitter and method for providing position information
    2.
    发明授权
    Position information providing system indoor transmitter and method for providing position information 有权
    位置信息提供系统室内发射机和提供位置信息的方法

    公开(公告)号:US08618978B2

    公开(公告)日:2013-12-31

    申请号:US12745478

    申请日:2008-11-27

    IPC分类号: G01S19/48

    CPC分类号: G01S19/11 H04W64/003

    摘要: Provided is a position information providing system which can reduce a time required for acquiring position information. An indoor transmitter is adapted to provide position information by using a second positioning signal compatible with a first positioning signal which is a spread spectrum signal from each of a plurality of satellites. The indoor transmitter includes an EEPROM which stores therein position data for identifying an installation location thereof, an FPGA operable to generate a second positioning signal including the position data as a spread spectrum signal, and a transmitting section operable to transmit the spread spectrum signal. The second positioning signal is generated to repeat the same content in a cycle shorter than that of the first positioning signal.

    摘要翻译: 提供一种位置信息提供系统,其可以减少获取位置信息所需的时间。 室内发射器适于通过使用与作为来自多个卫星中的每一个的扩频信号的第一定位信号兼容的第二定位信号来提供位置信息。 室内发送机包括EEPROM,其中存储有用于识别其安装位置的位置数据;可操作地生成包括作为扩展频谱信号的位置数据的第二定位信号的FPGA和可用于发送扩频信号的发送部分。 生成第二定位信号,以比第一定位信号短的周期重复相同的内容。