Radar transponder
    1.
    发明申请
    Radar transponder 失效
    雷达转发器

    公开(公告)号:US20050200515A1

    公开(公告)日:2005-09-15

    申请号:US10514862

    申请日:2003-05-21

    CPC分类号: G01S13/767 G01S13/872

    摘要: In a first aspect, the present invention relates to a transponder (TR) comprising: (i) a receiver and associated receiving antenna (ATR) for receiving incoming radar pulses in a first frequency band (F1) at an unknown pulse repetition rate, (ii) means for calculating the pulse repetition rate, (iii) a frequency synthesiser for generating a signal in a second frequency band (F2), (iv) modulation means for modulating the signal generated by the frequency synthesiser so as to encode information into the signal, and (v) a transmitter and associated transmitting antenna (ATT) for transmitting said modulated signal, wherein the transmitted signal is synchronised with the calculated pulse repetition rate of the incoming radar pulses and modulation of the transmitted signal is such that accurate positioning of the transponder (TR) can be determined at a remote receiver (RE). The invention also relates to a transponder receiver comprising: (i) a receiving antenna (ARE) for receiving modulated signals transmitted from a transponder (TR) in accordance with the first aspect, (ii) signal processing means for extracting data and positioning information from said signals and (iii) information output means.

    摘要翻译: 在第一方面,本发明涉及一种应答器(TR),包括:(i)接收机和相关联的接收天线(A SUB TR),用于接收第一频带中的入射雷达脉冲(F < (ii)用于计算脉冲重复率的装置,(iii)用于产生第二频带中的信号的频率合成器(F SUB2 ) >),(iv)用于调制由频率合成器产生的信号以便将信息编码到信号中的调制装置,以及(v)用于发送所述信号的发射机和相关联的发射天线(A SUB TT) 调制信号,其中所发送的信号与所计算的入射雷达脉冲的脉冲重复频率同步,并且发射信号的调制使得可以在远程接收机(RE)处确定应答器(TR)的精确定位。 本发明还涉及一种应答器接收机,包括:(i)根据第一方面的用于接收从应答器(TR)发送的调制信号的接收天线(A SUB> RE),(ii)信号处理 用于从所述信号中提取数据和定位信息的装置,以及(iii)信息输出装置。

    Radar transponder
    2.
    发明授权
    Radar transponder 失效
    雷达转发器

    公开(公告)号:US07239264B2

    公开(公告)日:2007-07-03

    申请号:US10514862

    申请日:2003-05-21

    IPC分类号: G01S13/74

    CPC分类号: G01S13/767 G01S13/872

    摘要: Transponders, receivers and position determining systems are described. In one embodiment, a transponder includes (i) an on-board receiver and associated receiving antenna for receiving incoming radar pulses in a first frequency band at an unknown pulse repetition rate, (ii) means for calculating the pulse repetition rate, (iii) a frequency synthesizer for generating a signal in a second frequency band, (iv) modulation means for modulating the signal generated by the frequency synthesizer so as to encode information into the signal, and (v) a transmitter and associated transmitting antenna for transmitting said modulated signal, wherein the transmitted signal is synchronized with the calculated pulse repetition rate of the incoming radar pulses, and modulation of the transmitted signal is such that accurate positioning of the transponder can be determined at a remote receiver.

    摘要翻译: 描述了应答器,接收器和位置确定系统。 在一个实施例中,应答器包括(i)车载接收机和相关联的接收天线,用于以未知脉冲重复率在第一频带中接收入射雷达脉冲,(ii)用于计算脉冲重复率的装置,(iii) 用于产生第二频带中的信号的频率合成器,(iv)用于调制由频率合成器产生的信号以便将信息编码到信号中的调制装置,以及(v)发送器和相关联的发送天线,用于发送所述调制 信号,其中所发送的信号与所计算的输入雷达脉冲的脉冲重复率同步,并且发射信号的调制使得可以在远程接收机处确定应答器的精确定位。

    Ground penetrating radar
    3.
    发明授权
    Ground penetrating radar 失效
    地面穿透雷达

    公开(公告)号:US06664914B2

    公开(公告)日:2003-12-16

    申请号:US10204953

    申请日:2002-10-17

    IPC分类号: G01S1388

    摘要: A ground penetrating radar includes a signal generator, a return signal processor, a gate and an antenna. The signal generator is a dual frequency synthesizer that generates a stepped frequency master signal and a tracking signal offset by an intermediate frequency. The return signal processor is a dual channel quadrature receiver that mixes down a return signal and a sample of the master signal to intermediate frequency using the tracking signal. The signal generator is pulsed by the gate and the return signal is gated at the same frequency. Hollow pyramidal antennas are also described that have an ultrawide band bowtie structure with antenna electronics located within one antenna element. A method of operating the radar is also described.

    摘要翻译: 地面穿透雷达包括信号发生器,返回信号处理器,门和天线。 信号发生器是双频合成器,其产生阶跃频率主信号和由中间频率偏移的跟踪信号。 返回信号处理器是双通道正交接收器,其使用跟踪信号将返回信号和主信号的采样与中频混合。 信号发生器由门脉冲,并且返回信号以相同的频率门控。 还描述了具有位于一个天线元件内的天线电子装置的超宽带弓形结构的中空金字塔形天线。 还描述了操作雷达的方法。