What are the laser range finder's underlying technical principles?
Pulse method laser ranging technology principle:
The phase approach is comparable to the speed and distance measuring techniques used in ultrasonic technology. Several hundred meters is typically the maximum measurement distance, which is readily on the order of millimeters. Nevertheless, the rangefinder created using this method has a limited maximum measurement distance. expand. This approach is popular overseas. Infrared lasers, such as near-infrared and mid-infrared lasers, are frequently used in pulse method laser ranging. In this band, there are both visible and invisible lasers.
This project uses the pulse method to create a handheld laser rangefinder because the rangefinder based on this technology has low coherence requirements, quick speed, simple construction, high peak output power, high repetition frequency, and broad range.
Phase method laser ranging technology principle:
The phase approach is the foundation of the commonplace laser range finder currently available. This is due to a significant flaw in ultrasonic distance measuring—the error is too large—being readily overcome by the laser rangefinder based on the phase approach, allowing for millimeter-level accuracy in measurement. The main drawbacks of the phase method laser range finder include its complicated circuit and limited action range (approximately 100 meters). But, thanks to the efforts of numerous scientists, there are already phase method laser range finders with an action range of several hundred meters.
