무선 항법시스템의 위성신호 수신기의 디지탈 상관기
    1.
    发明公开
    무선 항법시스템의 위성신호 수신기의 디지탈 상관기 无效
    从卫星无线电导航系统接收信号的相关器

    公开(公告)号:KR1020010040333A

    公开(公告)日:2001-05-15

    申请号:KR1020007007801

    申请日:1998-11-11

    CPC classification number: G01S19/29 G01S19/30 G01S19/33

    Abstract: PURPOSE: A digital correlator is provided to solve a complicate use problem of a single processor for position search and a telecommunication by reducing a load of the processor in searching a signal with the function of a fast search. CONSTITUTION: A digital correlator includes a switch(1) for switching an input signal, a data exchange unit(2) connected to a processor through a data bus and to an output of a first, a second, a third, and a fourth integrators for controlling inputs of a digital carrier generator, a digital code generator(10), a reference C/A code generator of a SRNS GPS/GLONASS system, a first and a second decision-making units(19,20). The first and the second decision-making units(19,20) have their control inputs and outputs connected through buses to a data exchange unit. The signal inputs of the first decision-making unit(19) are connected respectively to the outputs of a second and a third integrators, while the signal inputs of the second decision-making unit(20) are connected respectively to the outputs of a first and a fourth integrators. Each decision-making unit comprises two module-defining devices, an adder having its inputs connected to the outputs of the module-defining devices, a threshold register as well as three threshold devices having their signal inputs connected respectively to the output of the adder and to the outputs of the first and second module-defining devices. The reference input of the first threshold device is connected to the first output of the threshold register, while the reference inputs of the second and third threshold devices are connected to the second output of the threshold register. The outputs of the threshold devices are further connected through an OR circuit to the input of a detection signal formatter.

    Abstract translation: 目的:提供一种数字相关器,通过减少处理器在快速搜索功能中搜索信号的负载来解决用于位置搜索和通信的单个处理器的复杂使用问题。 构成:数字相关器包括用于切换输入信号的开关(1),通过数据总线连接到处理器的数据交换单元(2)和第一,第二,第三和第四积分器 用于控制数字载波发生器,数字码发生器(10),SRNS GPS / GLONASS系统的参考C / A码发生器,第一和第二决策单元(19,20)的输入。 第一和第二决策单元(19,20)将其控制输入和输出通过总线连接到数据交换单元。 第一决策单元(19)的信号输入分别连接到第二和第三积分器的输出,而第二决策单元(20)的信号输入分别连接到第一和第三积分器的输出端 和第四个集成商。 每个决策单元包括两个模块定义设备,其输入端连接到模块定义设备的输出的加法器,阈值寄存器以及其信号输入分别连接到加法器的输出端的三个阈值器件,以及 到第一和第二模块定义设备的输出。 第一阈值装置的参考输入连接到阈值寄存器的第一输出,而第二和第三阈值装置的参考输入连接到阈值寄存器的第二输出。 阈值器件的输出通过OR电路进一步连接到检测信号格式化器的输入端。

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