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    • 9. 发明授权
    • Transmitter location for ultra-wideband, transmitted-reference CDMA communication system
    • 用于超宽带,发射参考CDMA通信系统的发射机位置
    • US07269427B2
    • 2007-09-11
    • US09973140
    • 2001-10-09
    • Ralph Thomas HoctorJohn Erik HersheyNick Andrew Van StralenHarold Woodruff Tomlinson, Jr.
    • Ralph Thomas HoctorJohn Erik HersheyNick Andrew Van StralenHarold Woodruff Tomlinson, Jr.
    • H04Q7/20H04M11/04H04B7/00H04B7/08H04B17/00G01S13/08
    • H04B1/7163G01S5/06
    • A system and method involve tracking the location of objects within an area of interest using transmitted-reference ultra-wideband (TR-UWB) signals. The system includes at least three base stations communicating with a central processor, at least one mobile device and at least one fixed beacon transmitter of known location. The mobile device is equipped with a transmitter for transmitting a TR-UWB signal to a base station, which then determines a location of the mobile device based on time difference of arrival information between the beacon transmitters and mobile devices measured at all the base stations. Preferably, the area of interest includes a plurality of mobile devices each transmitting a delay-hopped TR-UWB signal according to a code-division multiple access scheme. The mobile devices may be attached to a patient and/or a medical asset within the hospital for tracking purposes. Additionally, patient medical information may be transmitted with the TR-UWB signals to allow patient monitoring to occur simultaneously with asset/patient tracking.
    • 一种系统和方法包括使用发射参考超宽带(TR-UWB)信号来跟踪感兴趣区域内的物体的位置。 该系统包括与中央处理器,至少一个移动设备和已知位置的至少一个固定信标发射机通信的至少三个基站。 移动设备配备有用于向基站发送TR-UWB信号的发射机,其基于在所有基站测量的信标发射机和移动设备之间的到达信息的时间差确定移动设备的位置。 优选地,感兴趣区域包括多个移动设备,每个移动设备根据码分多址方案发送延迟跳跃的TR-UWB信号。 移动设备可以附接到医院内的患者和/或医疗资产以用于跟踪目的。 另外,可以用TR-UWB信号发送患者医疗信息,以便患者监视与资产/患者跟踪同时发生。