Until recently, the main working instrument of the surveyor was an electronic total station. Brigades plotted tacheometric moves with subsequent equalization in specialized software. With the development of GNSS technologies, demand for them has increased dramatically. Now there are almost no organizations, whose fleet of geodetic equipment consists exclusively of optical devices. Constantly increasing competition makes organizations increasingly invest in the expansion and modernization of their fleet of geodetic equipment. This allows organizations to take on a greater number of orders and do not depend on their fulfillment from the availability of the starting points in the work area. Also, the quality of the source data is often not credible.
At the same time, organizations often try to save on related costs, including training in working with this equipment. Now all the major suppliers of surveying equipment at the time of the sale conduct initial training and help to set up new equipment. Also, the availability of qualified and high-quality technical support is a prerequisite when choosing a supplier. But, unfortunately, often this is not enough. For a few hours of instruction, you can not tell the entire course of training, which includes not only a practical part, but also a theoretical one. As a result, surveyors in the process of making a lot of technological errors, which entail many problems, and often rework. Employees spend a lot of time trying to find errors and ways of solving them independently or with technical support of the supplier, although they could be avoided even in the field or even in preparation for work. And if the object is far from the office, the cost of the trip can significantly increase.
Also, problems arise already at the stage of preparation for work. The large size of our country carries with it certain difficulties. Incomplete coverage of the entire territory with high-quality mobile communication and its unreliability when moving away from large cities make surveyors always be prepared to change their planned technology to another, more suitable, directly at the facility. It turns out that the modern geodesist should understand not only the geodesy itself, but also in the communication methods for setting up the equipment.
A large number of coordinate systems used in performing various types of work also does not contribute to the rapid development of a new GNSS equipment package. Unlike a total station that operates in Cartesian or rectangular coordinates, GNSS equipment primarily determines the geocentric coordinates that the field software recalculates into coordinates in the necessary flat local systems. But for this it is necessary not only to know the parameters of the transition from one coordinate system to another, but also to understand the entire diversity of these systems.
Separately it is worth noting that training to work with equipment used in work is very often mandatory, as well as the availability of a corresponding certificate. For example, in the same SCISP 02-262-02 (the Instruction on the development of the survey justification and the survey of the situation and the relief with the use of global navigation satellite systems GLONASS and GPS) it is said that persons who “have passed training in working with receivers of the type that is intended for satellite definitions.”