What are the laser rangefinder's measurement parameters and error?
A laser rangefinder is a device that measures the distance to a target using a specific modulated laser parameter. The laser range finder has a measurement range of 3.5 to 5000 meters.
Phase method range finders and pulse method range finders are the two categories that are separated based on the distance measuring method. During use, the pulse laser range finder sends a single short pulse laser beam or a series of pulses to the target, and the photoelectric element picks up the laser that is reflected by the object. The distance between the observer and the target is calculated using the time taken by the laser beam from launch to reception. The phase difference between the emitted light and the reflected light as it travels through space is detected by the phase method laser rangefinder to determine the distance.The error of the laser range finder is about a fifth to a hundredth of that of other optical range finders, and it is lightweight, compact, simple to use, quick, and accurate. A example phase technique and pulse method rangefinder diagram is shown on the right.
What causes the laser rangefinder to malfunction?
Using 95% trustworthy statistics, the measurement accuracy is based on the ISO/R1938-1971 recommendation. (2s, which is twice the standard deviation). The indicated measurement error based on the typical measuring environment is the standard measurement accuracy. Not applicable to some application operations and calculations, including the Pythagorean measurement and tracking mode (continuous tracking measurement).
The pulse approach and the phase method are the two ways to use a laser rangefinder.
Although the absolute accuracy of a laser rangefinder that uses pulse emission is often low, it can nonetheless measure distances over a great distance with acceptable relative accuracy.
The accuracy of a laser rangefinder, which is the highest of all rangefinders, can reach plus or minus 1 mm if phase testing is used.
The laser rangefinder's accuracy error is constant over the entire distance and is not inversely proportional to the measured distance. The inaccuracy, however, will rise by +/-5ppm (one millionth unit) (+/-0.5mm/100m) at very long distances.
The industry has always been concerned with the accuracy of the laser rangefinder, and some businesses require a relatively high-precision laser rangefinder. The typical rangefinder's accuracy for medium- and long-distance telescope laser rangefinders is 1 yard + 1. Since it now has an accuracy of 0.5 yards + 1, it can be referred to as a high-precision laser rangefinder. Within 100 meters, this high-precision range finder may reach accuracy to within 0.5 yards.
Measurement error is the main cause of inaccuracy in range finders. For instance, the distance meter selects the measurement starting point wrongly, the laser light is obstructed or pierced, and the measurement end point is chosen incorrectly. The mistake is minimal in the ideal situation.
