system for locating missing persons at sea and on land in middle of radio transmission of signal to request aid and position

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• 2. 利用GPS数据对请求援助的人进行定位的援助请求处理系统 [P] . 中国专利： CN1211667C . 2005.07.20
• 3. tracking system of missing persons at sea and on land by means of radio transmission of signal to request aid and position [P] . ITNA960058U1 . 1998-01-22

  机译： 通过无线电信号请求援助和定位的海上和陆地失踪人员跟踪系统

• 4. Missing person search system, search requester terminal, server, missing person search method, and program [P] . JP2021149237A . 2021-09-27

  机译： 缺少人员搜索系统，搜索请求者终端，服务器，缺少人搜索方法和程序

• 5. Persons rescue method for use in persons locating and positioning system, involves transmitting position signal to rescue stations, and transmitting signal, adjacent to position signal, to characterize reliability of position signal [P] . 德国专利： DE102005051001A1 . 2007-04-26

  机译： 用于人员定位和定位系统的人员救援方法，包括向救援站发送位置信号，并在位置信号附近发送信号，以表征位置信号的可靠性

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