The four markers, a pedestal and a top cover together form a complete observation marker structure. Markers are an important part of the marker and are usually made of strong and durable materials to maintain stability during observation. The base is a bridge connecting the marker stone and the top cover, which can fix the top cover on the marker stone, and at the same time play a supporting and stabilizing role. The top cover is the top structure of the observation target, which is usually made of transparent material for easy observation.
The four markers are usually arranged in a square or circle, and each marker is engraved with measurement data such as angle and distance to facilitate recording and calculation during observation. The observation target is usually set up on the observation point, and the position and attitude of the target can be deduced by measuring the angle, distance and other parameters between the target and the observation target. Therefore, the accuracy of the observation target directly affects the accuracy of the measurement results.
In order to ensure the accuracy of the observation target, in addition to ensuring the manufacturing accuracy of each component, a series of measures need to be taken during installation and use. For example, when installing the observation mark, it is necessary to ensure the flatness and stability of the base to avoid tilting or deformation of the observation target due to ground subsidence and other reasons. Regular calibration and maintenance are required to ensure the proper operation and accuracy of individual components.
In short, the four markers, a pedestal and a top cover of the observation target constitute a complete structure, and its design and manufacture need to fully consider the requirements of accuracy, stability and durability. Only in this way can the accuracy and reliability of the observation target be guaranteed, and a reliable guarantee can be provided for various measurement and positioning work.