Vehicle diplex doppler near-obstacle detection apparatus
    2.
    发明公开
    Vehicle diplex doppler near-obstacle detection apparatus 失效
    车辆双工多普勒近障碍物检测装置

    公开(公告)号:EP0367404A3

    公开(公告)日:1991-07-03

    申请号:EP89310026.3

    申请日:1989-09-29

    发明人: May, Phillip Alan

    IPC分类号: G01S13/34 G01S13/32 G01S13/93

    摘要: A vehicle near-obstacle detector in the form of a diplex Doppler radar apparatus provides range information between a vehicle and an obstacle based on the phase shift between a pair of Doppler signals (D1,D2) derived from two transmitted radar signals at slightly different frequencies. A speed dependent error introduced by the time constant of a filter circuit (54) converting duty cycle range information based on the phase shift to an analogue signal is compensated by introducing a small time shift (35) in the signal path of one of the Doppler signals to effect a shift in the duty cycle range information.

    摘要翻译: 以双工多普勒雷达装置形式的车辆近障碍物检测器基于一对多普勒信号(D1,D2)之间的相移来提供车辆与障碍物之间的距离信息,所述一对多普勒信号(D1,D2)以略微不同的频率 。 由滤波器电路(54)的将基于相移的占空比范围信息转换为模拟信号的时间常数引入的速度相关误差通过在多普勒之一的信号路径中引入小时移(35)来补偿 信号以实现占空比范围信息的转变。

    Vehicle diplex doppler near-obstacle detection apparatus
    3.
    发明公开
    Vehicle diplex doppler near-obstacle detection apparatus 失效
    Fahrzeug-Diplex-Dopplergerätzur Bestimmung der Anwesenheit eines in derNähebefindlichen Hindernisses。

    公开(公告)号:EP0367404A2

    公开(公告)日:1990-05-09

    申请号:EP89310026.3

    申请日:1989-09-29

    发明人: May, Phillip Alan

    IPC分类号: G01S13/34 G01S13/32 G01S13/93

    摘要: A vehicle near-obstacle detector in the form of a diplex Doppler radar apparatus provides range information between a vehicle and an obstacle based on the phase shift between a pair of Doppler signals (D1,D2) derived from two transmitted radar signals at slightly different frequencies. A speed dependent error introduced by the time constant of a filter circuit (54) converting duty cycle range information based on the phase shift to an analogue signal is compensated by introducing a small time shift (35) in the signal path of one of the Doppler signals to effect a shift in the duty cycle range information.

    摘要翻译: 形式为二重多普勒雷达装置的车辆近距障碍物检测器基于从两个发射的雷达信号衍生的一对多普勒信号(D1,D2)之间的相移,提供车辆与障碍物之间的距离信息,该多普勒信号以稍微不同的频率 。 通过在多普勒中的一个的信号路径中引入小的时移(35)来补偿通过将基于相移的占空比范围信息转换为模拟信号的滤波器电路(54)的时间常数引入的速度相关误差 信号以实现占空比范围信息的偏移。