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    • 10. 发明申请
    • RADAR APPARATUS
    • 雷达装置
    • US20130229297A1
    • 2013-09-05
    • US13812124
    • 2011-06-03
    • Hirohito MukaiTakaaki KishigamiYoichi Nakagawa
    • Hirohito MukaiTakaaki KishigamiYoichi Nakagawa
    • G01S7/34
    • G01S7/34G01S7/28G01S7/2922G01S13/0209G01S13/42
    • A pulse signal is produced in a pulse generating section, and repetitively transmitted from an antenna at constant time intervals. A reception signal, received through an antenna and including a reflective wave from an object, is amplified and gain-adjusted. Thereafter, a distance detecting section detects a reception pulse of the reflected wave, and calculates the distance to the object. The variable attenuator attenuates the reception signal by a gain adjusted in accordance with a gain control signal. The gain of the variable attenuator is controlled so as to be maximum immediately after the pulse signal is transmitted, and to be reduced with elapse of time. Based on a gain adjustment timing signal, a gain adjustment timing when the attenuation amount is changed is made different for each transmission of the pulse signal.
    • 在脉冲发生部产生脉冲信号,从天线以恒定的时间间隔反复发送。 通过天线接收并包括来自对象的反射波的接收信号被放大和增益调整。 此后,距离检测部分检测反射波的接收脉冲,并计算到物体的距离。 可变衰减器通过根据增益控制信号调节的增益来衰减接收信号。 可变衰减器的增益被控制为在脉冲信号传输之后立即最大,并且随着时间的流逝而减小。 基于增益调整定时信号,对于脉冲信号的每次发送,使衰减量改变时的增益调整定时不同。