How accurate are laser measuring devices?

How accurate are laser measuring devices?

Laser rangefinder is a measuring tool, and its accuracy is an important performance index. What is the accuracy of laser rangefinder? Let's explore it carefully.

What is the measurement accuracy of laser rangefinder?

The measurement accuracy is based on the iso/r1938-1971 recommended by ISO, with 95% reliable statistics (2S, that is, twice the standard deviation). The standard measurement accuracy is the specified measurement error based on the general measurement environment. It is invalid in special application functions and calculations, such as Pythagorean measurement and tracking mode (continuous tracking measurement).

As we have said before, there are two methods of using laser rangefinder: pulse method and phase method.

If the laser rangefinder uses pulse emission, the absolute accuracy is generally low, but it can achieve good relative accuracy for long-distance measurement.

If the laser rangefinder uses phase test, the accuracy can reach plus or minus 1mm, which is the highest in the rangefinder.

The precision error of laser rangefinder is not proportional to the measured distance, and it is the same in the whole distance. However, the extra long distance will increase the error by +/-5ppm (+/-0.5mm/100m).

The accuracy of laser rangefinders has been concerned by the industry, and high-precision laser rangefinders are needed in some industries. For medium and long-distance telescope laser rangefinders, the highest accuracy of this kind of rangefinders is 1 code + -1. At present, it can be called a high-precision laser rangefinder, with an accuracy of 0.5 code + -1. This high-precision rangefinder can achieve an accuracy of less than 0.5 yards within 100 meters.