公开(公告)号：US09347773B2

公开(公告)日：2016-05-24

申请号：US14339314

申请日：2014-07-23

Applicant: LEICA GEOSYSTEMS AG

Inventor： Reto Stutz ,  Robert Fritsch ,  Juerg Hinderling ,  Marcel Rohner

IPC: G01C3/08 ,  G01S7/487 ,  G01S17/10 ,  G01S17/36 ,  G01S7/486

CPC classification number: G01C3/08 ,  G01S7/4865 ,  G01S7/487 ,  G01S17/10 ,  G01S17/36

Abstract: Highly accurate electro-optical time of flight distance measuring device for determining a distance to a target, including a transmitter for sending out a pulse shaped optical radiation to the target as well as a receiver for an optical signal built for turning the optical signal to an electrical signal, and a filter with a transfer function for filtering the electrical signal whereby the filter is built in such a way that its transfer-function is of at least 4th order, in particular 5th or 7th or higher order, so that aliasing is suppressed. Further a waveform-sampler, as an analog-to-digital-converter, for digitalizing the pulse shape from the filtered electrical signal as time- and value-quantized digital data, and a computation means for a numerical evaluation of the distance according to the pulse shape or a pulse shape representing numerical signature from the digital data.

Abstract translation: 用于确定到目标​​的距离的高精度电光时间飞行距离测量装置，包括用于向目标发射脉冲形状的光辐射的发射器以及用于将光信号转换为光信号的光信号的接收器 电信号和具有传递函数的滤波器，用于对电信号进行滤波，由此内置滤波器，使得其传递函数至少为4阶，特别是第5或第7或更高阶，使得混叠被抑制 。 此外，作为模数转换器的波形采样器，用于将经过滤波的电信号的脉冲形状数字化为时间和数值量化的数字数据，以及用于根据所述距离的数值评估的计算装置 脉冲形状或表示来自数字数据的数字签名的脉冲形状。