Have you ever used a handheld golf laser rangefinder?
After making up your mind to start a golf rangefinder, it is very painful for veterans who want to improve their skills or for beginners who are assisting in learning to play, because they don't know how to buy them.
The accuracy of the laser rangefinder mainly depends on the calculation accuracy of the instrument to calculate the time of laser emission and reception. According to the technology and applications used, laser rangefinders can be divided into conventional laser rangefinders (mainly used for outdoor sports, hunting, etc.) Precision laser rangefinder.
The phase method rangefinder is a rangefinder that modulates the laser phase and obtains the distance by measuring the phase difference of the reflected laser light. Since the reflected laser phase needs to be detected, the received signal needs to have a strong intensity. Considering the safety of human eyes, telephoto systems such as pulsed laser rangefinders cannot be used, and the range is small. A typical ranging range is 0.5mm to 150m. Generally speaking, the phase method laser rangefinder uses 635 nm (visually red) laser as the debugging object, commonly known as infrared rangefinder. However, the definition of laser is not based on color. If a 635nm laser rangefinder is used to directly illuminate the human eye, it will cause irreversible damage. Please use and protect properly.
Since the propagation speed of ultrasonic waves in the air is greatly affected by temperature, humidity and air pressure, the measurement error is large. Because the ultrasonic wavelength is long and the propagation distance is short, the general ultrasonic range finder has a short measurement distance and low measurement accuracy. However, the characteristics of ultrasonic transmission as a fan are greater than that of photoelectric rangefinders, and are widely used in security protection, cable height measurement, obstacle detection and other fields.
Laser rangefinders have been widely used in electric power, water conservancy, communication, environment, construction, geology, police, fire protection, blasting, navigation, aviation, railway, anti-terrorism/military, agriculture, forestry, real estate, leisure/outdoor sports and other fields.
In fact, this purchase is a misunderstanding, the rangefinder can not fully meet the parameter conditions, there are many interference factors, such as harsh environment. Complex terrain and realistic survey targets. At the time of purchase, if the user wants to measure the effect of 600 meters, do not choose a rangefinder with a parameter of 600 meters, because it may not achieve the data you want to measure.
