公开(公告)号：US20050146706A1

公开(公告)日：2005-07-07

申请号：US10503212

申请日：2002-12-27

申请人： Shumpei Kameyama ,  Yoshihito Hirano ,  Kimino Asaka ,  Toshiyuki Ando ,  Atsushi Okamura ,  Toshio Wakayama ,  Hiroshi Sakamaki

发明人： Shumpei Kameyama ,  Yoshihito Hirano ,  Kimino Asaka ,  Toshiyuki Ando ,  Atsushi Okamura ,  Toshio Wakayama ,  Hiroshi Sakamaki

IPC分类号： G01S7/481 ,  G01S13/32 ,  G01S17/32 ,  G01S17/58 ,  G01S13/00 ,  G01P3/36

CPC分类号： G01S17/58 ,  G01S7/4818 ,  G01S13/325 ,  G01S17/32

摘要： A laser radar apparatus includes a mixer 12 for converting the frequency of an electric signal outputted from a photodetector 11 into a baseband frequency by using a modulating signal generated by an oscillator 2. The laser radar apparatus carries out a coherent integral of the electric signal whose frequency has been converted by the mixer 12, and measures the quality of scatterers which exist in the atmosphere from a result of the integral. As a result, even when the S/N ratio of the light signal received by a receiving optical unit 8 is low, the laser radar apparatus can detect the quality of the scatterers.

摘要翻译： 激光雷达装置包括：混合器12，用于通过使用由振荡器2产生的调制信号将从光电检测器11输出的电信号的频率转换为基带频率。激光雷达装置执行电信号的相干积分， 频率已经由混合器12转换，并且从积分的结果测量存在于大气中的散射体的质量。 结果，即使当由接收光学单元8接收的光信号的S / N比低时，激光雷达装置也可以检测散射体的质量。