Patent ID: 6509958
Filing Date: 2003-01-21
Classification: G01S

Abstract:
A method for detecting a distance between a measuring device and an object, the measuring device including a transmitter and a receiver, in which a modulated light signal is emitted along a transmission channel by the transmitter in the direction of the object, the method comprising:receiving at least a part of the light signal emitted that is reflected at the object via a reception channel; converting the reflected light signal into a reflection signal; determining a light transit time of the received light signal; determining the distance between the measuring device and the object from the light transit time; sampling the reflection signal at a sample rate at one or more sampling times, wherein analog signal values of the reflection signal detected in each case at the one or more sampling times are read into one or more analog memories at the sampling rate; and reading out the signal values stored for the reflection signal in the one or more analog memories at a read-out rate lower than the sampling rate, wherein the read-out signal values for the reflection signal are subjected to an analog-digital conversion.