首页> 外国专利> Tdma - satellites according to directing the system with wide or narrow time window operation types for the reception of bursts having different conditions of time deviations.

Tdma - satellites according to directing the system with wide or narrow time window operation types for the reception of bursts having different conditions of time deviations.

机译:Tdma-卫星根据宽或窄的时间窗口操作类型引导系统,以接收具有不同时间偏差条件的突发。

摘要

PURPOSE:To absorb the fluctuation of a time slot due to position fluctuation of a satellite by selecting and outputting a 1st control signal as a demodulator control signal and a 2nd control signal as a unique word detection aperture. CONSTITUTION:A signal deciding device switches a selector 21 so that it select an output of a 2nd control signal generator 18 at a proper point of time when a round trip delay of a received burst signal is discriminated to be made clear. A burst signal reception demodulator 11 is controlled with a demodulator control signal generated and outputted by a 2nd control signal generator 18 according to a nearly accurate time slot indexed by a preceding burst. Moreover, when a burst signal to be sent is lost, the device 22 decides that no unique word detection signal 20 exists in a unique word detection aperture 15B to select the selector 21 to select an output of a 1st control signal generator 8, thereby preparing for the reception of the succeeding burst signal.
机译:目的:通过选择并输出第一控制信号作为解调器控制信号和第二控制信号作为唯一字检测孔径,来吸收由于卫星的位置波动而引起的时隙波动。构成:信号判定装置切换选择器21,以便在辨别接收到的突发信号的往返延迟时,在适当的时间点选择第二控制信号发生器18的输出。突发信号接收解调器11由第二控制信号生成器18根据前一突发所索引的几乎准确的时隙,通过解调器控制信号来控制该解调器控制信号。此外,当要发送的突发信号丢失时,设备22确定唯一单词检测孔15B中不存在唯一单词检测信号20,以选择选择器21以选择第一控制信号发生器8的输出,从而准备用于接收后续突发信号。

著录项

  • 公开/公告号DE68921705T2

    专利类型

  • 公开/公告日1995-07-27

    原文格式PDF

  • 申请/专利权人 NIPPON ELECTRIC CO JP;

    申请/专利号DE1989621705T

  • 发明设计人 NAWATA HIZURU C O NEC CORPORAT JP;

    申请日1989-11-30

  • 分类号H04B7/212;

  • 国家 DE

  • 入库时间 2022-08-22 04:08:29

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