The use of long-distance laser rangefinder
Release time:
2023-07-05 17:10
Source:
Laser rangefinder is an instrument that uses laser to accurately measure the distance to the target. The laser rangefinder emits a very thin laser beam to the target when it is working, and the laser beam reflected by the photoelectric element is received by the target. The timer measures the time from the launch to the reception of the laser beam, and calculates the distance from the observer to the target.
If the laser is continuously launched, the measuring range can reach about 40 kilometers, and can be operated day and night. If the laser is pulsed, the absolute accuracy is generally low, but for long-distance measurement, good relative accuracy can be achieved.
The world's first laser was first developed by Meiman, a scientist from the Hughes Aircraft Company of the United States, in 1960. On this basis, the US military soon carried out research on military laser devices. In 1961, the first military laser rangefinder passed the U.S. military demonstration test, and the laser rangefinder soon entered the practical consortium.
Laser rangefinders are light in weight, small in size, simple in operation, fast and accurate, and their error is only 1/5 to several 1% of other optical rangefinders, so they are widely used in topographic surveys, battlefield surveys, tanks, aircraft, ships and artillery Ranging to targets, measuring clouds, aircraft, missiles, and the height of artificial satellites. It is an important technical equipment to improve the accuracy of high tanks, aircraft, ships and artillery.
Due to the continuous reduction in the price of laser rangefinders, the industry has gradually begun to use laser rangefinders. At home and abroad, there are a number of new micro-rangefinders with the advantages of fast ranging, small size and reliable performance, which can be widely used in industrial measurement and control, mining, ports and other fields.
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