What is the principle of laser positioning?

For laser positioning, it is more suitable for indoor, and a certain number of reflectors should be installed in the environment.

For laser positioning, it is more suitable for indoor, and a certain number of reflectors should be installed in the environment. At the same time, attention should be paid to the accuracy of the installation of reflectors, distance, avoidance of windows when installation, asymmetric layout and other elements. The positioning can be divided into initial static positioning and dynamic positioning in the process of movement. Static positioning is used to determine the initial position, while dynamic positioning is based on. The state of motion is constantly updated.

In the course of laser scanning for one week, the distance between laser and all reflective plates can be calculated theoretically. At the same time, according to sensing time and scanning period, the distance between any two reflective plates can be calculated by using triangular formula. The measured distance can be compared with off-line theoretical value to match the number and position information of each reflective plate.

For the reflective plate detected by obstacles and other factors in one week of scanning, the matching method is revised on the basis of considering the number, and the confidence of the reflective plate can also be matched. Finally, the position of the laser can be calculated.

Comparing with static scanning, dynamic process can save more complicated calculation and matching process. In the time of position estimation timing T, the position can be estimated by steering, velocity, acceleration and other information. Considering various disturbances, the position must have errors. The expected list can be obtained by calculating the theoretical reflective plate distance with the estimated position, and the desired list can be obtained by setting reflective plate distance. The plate estimates the range of distance threshold to accelerate matching.