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    • 3. 发明授权
    • Doppler-aided positioning, navigation, and timing using broadcast television signals
    • 使用广播电视信号的多普勒辅助定位,导航和定时
    • US08125389B1
    • 2012-02-28
    • US12582051
    • 2009-10-20
    • Guttorm OpshaugJu-Yong DoDimitri Rubin
    • Guttorm OpshaugJu-Yong DoDimitri Rubin
    • G01S3/02
    • G01S19/52G01S19/10
    • Methods having corresponding apparatus and tangible computer-readable media comprise: determining a plurality of first pseudoranges based on a plurality of respective wireless television signals received by an apparatus and a clock signal generated by the apparatus, wherein each of the first pseudoranges represent a difference between a time of transmission of the respective wireless television signal from a respective transmitter and a time of reception of the respective wireless television signal at the apparatus and a time offset of the clock signal; determining a plurality of first estimates of frequency offsets of the wireless television signals received by the apparatus; and determining a first estimate of a location of the apparatus based on the first pseudoranges, the first frequency offsets of the wireless television signals, and locations of the transmitters.
    • 具有对应装置和有形计算机可读介质的方法包括:基于由装置接收的多个相应的无线电视信号和由该装置产生的时钟信号确定多个第一伪距,其中第一伪距中的每一个表示 各个无线电视信号从相应的发射机发送的时间和在该设备处的相应无线电视信号的接收时间和时钟信号的时间偏移; 确定由所述装置接收的无线电视信号的频率偏移的多个第一估计; 以及基于所述第一伪距,所述无线电视信号的所述第一频率偏移和所述发射机的位置来确定所述装置的位置的第一估计。