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    • 1. 发明授权
    • GPS receiver
    • GPS接收机
    • US4800577A
    • 1989-01-24
    • US78247
    • 1987-07-06
    • Ryobun TachitaKen IkedaAkio Teranishi
    • Ryobun TachitaKen IkedaAkio Teranishi
    • G01S5/14G01S19/22G01S19/30G01S19/33H03L7/099H04L7/10
    • G01S19/24H03L7/0991
    • A GPS receiver comprising a pseudonoise generator for simultaneously generating pseudonoise signals respectively corresponding to satellite electromagnetic waves transmitted from two or more satellites, an oscillator for simultaneously regenerating carrier waves of the plurality of satellite electromagnetic waves, and a plurality of demodulators responsive to the regenerated carrier waves and the pseudonoise signals to demodulate individual satellite electromagnetic waves independently, to thereby regenerate data transmitted from individual satellites, each demodulator being operative, during demodulation, to detect a set of phases of one pseudonoise signal and one regenerated carrier wave relative to one satellite electromagnetic wave on time division basis and including a first mixer for mixing of one pseudonoise signal, a second mixer for mixing of one regenerated carrier wave and a filter, whereby a set of phases of one pseudonoise signal and one regenerated carrier wave is changed to another set at timed relationship with transmission of data from individual satellites to measure a phase of one pseudonoise signal relative to one satellite electromagnetic wave, thereby tracking data transmitted from individual satellites on the basis of the measured phase.
    • 一种GPS接收机,包括用于同时产生分别对应于从两个或更多个卫星发送的卫星电磁波的伪噪声信号的伪噪声发生器,用于同时再生多个卫星电磁波中的载波的振荡器,以及响应于再生载波的多个解调器 波和伪噪声信号以独立地解调单个卫星电磁波,从而在解调期间重新生成从各个卫星发射的数据,每个解调器都可操作,以便相对于一个卫星电磁体检测一个伪噪声信号和一个再生载波的一组相位 并且包括用于混合一个伪噪声信号的第一混频器,用于混合一个再生载波的滤波器的第二混频器,由此改变一个伪噪声信号和一个再生载波的一组相位 以相对于来自各个卫星的数据传输的定时关系与另一组测量相对于一个卫星电磁波的一个伪噪声信号的相位,从而基于测量的相位跟踪从各个卫星发送的数据。
    • 2. 发明授权
    • Diversity receiver
    • 分集接收机
    • US4696058A
    • 1987-09-22
    • US678161
    • 1984-12-04
    • Ryobun TachitaAkio Teranishi
    • Ryobun TachitaAkio Teranishi
    • H04B7/08H04B1/06
    • H04B7/0808
    • A diversity receiver provides plural antennas, one receiving part for receiving the radio wave from one of the plural antennas and a control part for selecting one antenna from the plural antennas, wherein the antenna is selected in a manner that an antenna receiving the most intensive radio wave is detected by switching of the plural antennas in-turn in a time period T.sub.1, and the detected antenna is selected for receiving an information of the radio wave in a time period T.sub.2, the plural antennas may be disposed with distances shorter than a wavelength of the radio wave.
    • 分集接收机提供多个天线,一个用于从多个天线之一接收无线电波的接收部分和用于从多个天线中选择一个天线的控制部分,其中天线以接收最密集无线电的天线 通过在时间段T1内依次切换多个天线来检测波,并且选择检测天线以在时间段T2内接收无线电波的信息,多个天线可以布置成比波长短的距离 的无线电波。
    • 3. 发明授权
    • Transmitting and receiving systems
    • 发射和接收系统
    • US4888788A
    • 1989-12-19
    • US121101
    • 1987-11-16
    • Akio TeranishiNobuo GenjiKohji Itoh
    • Akio TeranishiNobuo GenjiKohji Itoh
    • H04B1/707
    • H04B1/707
    • Transmitter and receiver system comprises a transmitter comprising means for generating a pseudo noise code, a first mixer for modulating transmission data by the pseudo noise code, phase shifting means for shifting the phase of a reference frequency signal by 90.degree., a second mixer for frequency converting an output of the first mixer by one of the reference signal and the phase-shifted reference signal, a third mixer for frequency-converting the pseudo noise code by the other one of the two reference signals, and adding means for adding outputs of said second and third mixers. The system also comprises a receiver comprising means for shifting the phase of the transmitted signal by 90.degree., arithmetic operating means for multiplying the transmitted signal with the phase shifted signal means, and filter for allowing only the signal regarding the transmission data in an output of the arithmetic operating means to pass.
    • 发射机和接收机系统包括发射机,包括用于产生伪噪声码的装置,用于通过伪噪声码调制发射数据的第一混频器,用于将参考频率信号的相位偏移90°的相移装置,用于频率的第二混频器 将第一混频器的输出转换为参考信号和移相参考信号之一;第三混频器,用于通过两个参考信号中的另一个频率转换伪噪声码,以及加法装置,用于将所述 第二和第三搅拌机。 该系统还包括一个接收机,它包括将发射信号的相位偏移90°的装置,用于将发射信号与相移信号装置相乘的算术运算装置,以及仅允许在发射信号的输出中有关发射数据的信号的滤波器 算术运算装置通过。