公开(公告)号：US5751240A

公开(公告)日：1998-05-12

申请号：US764627

申请日：1996-12-11

申请人： Akihiso Fujita ,  Hiroshi Hazumi ,  Hiroshi Mizuno ,  Hiroto Nakatani ,  Hiroshi Naganawa

发明人： Akihiso Fujita ,  Hiroshi Hazumi ,  Hiroshi Mizuno ,  Hiroto Nakatani ,  Hiroshi Naganawa

IPC分类号： G01S7/288 ,  G01S13/34 ,  G01S13/536 ,  G01S13/60 ,  G01S13/87 ,  G01S13/93

CPC分类号： G01S13/34 ,  G01S13/536 ,  G01S13/87 ,  G01S13/345 ,  G01S2007/2883

摘要： Beat signals of respective receiver channels CH1 and CH2, produced by mixing their receiving signals with a transmission signal, are subjected to Fourier transformation to detect the frequency and phase of peak frequency components in both an ascending-section where the frequency of the transmission increases and a descending-section where the frequency of the transmission decreases. Based on peak frequency components derived from the same target, phase differences .DELTA..phi.u(i) and .DELTA..phi.d(j) between receiver channels CH1 and CH2 in the ascending- and descending-sections (steps 210-230). Relative relationship between the transmission signal and the receiving signal is judged based on the signs of the phase differences. Respective peak frequencies fu(i) and fd(j), detected as absolute values of frequency differences between the transmission signal and the receiving signal, are given sings in accordance with the judgement result. Then, the distance D and relative velocity V of the target are calculated (steps 240-260).

摘要翻译： 通过将其接收信号与发送信号混合产生的各个接收机信道CH1和CH2的跳动信号进行傅里叶变换，以检测传输频率增加的上升部分中的峰值频率分量的频率和相位， 传输频率降低的下降部分。 基于从相同目标导出的峰值频率分量，在上升和下降部分中的接收机信道CH1和CH2之间的相位差DELTA phi u（i）和DELTA phi d（j）（步骤210-230）。 基于相位差的符号判断发送信号与接收信号之间的相对关系。 根据判断结果给出作为发送信号与接收信号之间的频率差的绝对值检测出的各个峰值频率fu（i）和fd（j）。 然后，计算目标的距离D和相对速度V（步骤240-260）。