| 摘要 |
A distance measuring apparatus includes an optical transmitter having an optical source for transmitting modulated optical signals towards a remote object, and an optical receiver for detecting the modulated optical signals upon reflection from the remote object. The optical receiver includes a photo-detector which is configured for gated detection of optical signals by gating signals applied thereto. The gating signals are arranged to be in a constant time or phase relationship with the modulated optical signals. The optical receiver calculates the distance of the remote object with reference to delay information between transmitted and detected optical signals, with the delay information being determined by gated detection of optical signals at the photo-detector.
|
