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    • 10. 发明申请
    • HIGH-CAPACITY LOCATION AND IDENTIFICATION SYSTEM FOR COOPERATING MOBILES WITH FREQUENCY AGILE AND TIME DIVISION TRANSPONDER DEVICE ON BOARD
    • 用于频率捷变和时分多址传输器装置在船上协作移动的高容量定位和识别系统
    • WO2006040730A3
    • 2006-08-10
    • PCT/IB2005053343
    • 2005-10-11
    • UNIV ROMABARTOLINI SIMONEGALATI GASPARE
    • BARTOLINI SIMONEGALATI GASPARE
    • G01S13/78
    • G01S13/781G01S13/784
    • This invention allows Cooperating mobiles (ground vehicles, aircraft) to be located and identified by Multilateration and Automatic Dependent Surveillance - Broadcast (ADS -B) techniques using the frequency band and the format of the Secondary Surveillance Radar (SSR) signals in high traffic situations, such as those of large airports. Standard messages, transmitted by the mobile on the downlink channel, i.e. to a set of fixed receiving stations, and including the identification code, permit the location of the mobile by multiple time measurements (Multilateration) from a subset of the set of fixed receiving stations; when the message contains the position (GPS and, later, Galileo datum) the mobile may be located with the ADS-B when in view even of a few stations or of a single station. In order to overcome the problem that arises with high traffic, i.e. the superimposition of signals, called garbling, the present invention uses (a) a variable carrier frequency in the downlink channel (b) a time division scheme for the transmission from different mobiles . In this way, the system becomes suitable to the discrimination of overlapped signal; this is obtained by frequency analysis and, in the cases of high traffic in the downlink channel, by super resolution techniques. Moreover, the downlink transmission capacity increases with respect to the present state of the art respecting the bandwidth limits as defined by the international regulations. The present invention includes a signal generation and transmission system with selection of the carrier frequency (called frequency agility) and with selection of the transmission time for each mobile (called time agility or time division multiple access), as well as signal discrimination means in the receiving fixed station.
    • 本发明允许通过使用高流量情况下的次级监视雷达(SSR)信号的频带和格式的多点定位和自动相关监视 - 广播(ADS-B)技术来定位和识别合作移动装置(地面车辆,飞机) ,比如那些大型机场。 由移动站在下行链路信道上发送的标准消息,即由一组固定的接收站发送并包括识别码的标准消息通过来自该组固定接收站的子集的多次时间测量(多点测量)允许移动站的位置 ; 当消息包含该位置(GPS以及后来的伽利略数据)时,即使在几个电台或单个电台中,移动电话也可以与ADS-B一起放置。 为了克服高业务量,即称为嘟嘟声的信号叠加的问题,本发明使用(a)下行链路信道中的可变载波频率(b)用于来自不同移动台的传输的时分方案。 这样,该系统适用于重叠信号的区分; 这是通过频率分析获得的,并且在下行链路信道中业务量高的情况下,通过超分辨率技术获得。 而且,相对于现有技术,下行链路传输容量相对于国际法规定义的带宽限制而言增加。 本发明包括一个信号发生和传输系统,它选择载波频率(称为频率捷变)并选择每个移动台的传输时间(称为时间捷变或时分多址),以及选择 接收固定电台。