③ It is easy to operate<br>GPS positioning has a high degree of automation. The operators are only limited to placing instruments, switching instruments, measuring instrument height and monitoring the working state. Other things such as satellite acquisition, tracking observation, data acquisition are automatically completed by the instrument. In addition, the instrument itself is light in weight, small in volume and easy to carry, which greatly reduces the difficulty of operation and improves the efficiency. Secondly, the results of GPS positioning can directly provide the three-dimensional coordinates of points, which can not only accurately determine the plane position of points, but also open up a new way to study the shape of geoid and determine the elevation of ground points.<br>④ All weather operation<br>GPS positioning is not restricted by weather conditions, and can be engaged in operation at any time and any place. In addition, the observation time is shortened and the speed is accelerated, which facilitates the overall arrangement of Surveying Engineering, makes the engineering plan more feasible, and makes it possible to provide accurate and rapid surveying and mapping results.<br>With the progress of science and technology and the increase of application demand, GPS has developed from the original single performance to today's wide application. GPS, with its unique and powerful functions, is involved in various fields of national economy. Especially in recent years, the consumer market has a strong momentum of development, it has entered our daily work, study, life and entertainment.<br>
正在翻译中..