GPS, the global positioning system, is simple and quick to operate, the
network is not limited by the conventional access conditions, observation can be all-
weather, and the positioning accuracy is high, with the advantages of the classical
measurement method incomparable. In the past two years, this technology has been
gradually applied to topographic survey and gradually matured, providing a guarantee
for the accuracy and scientific nature of topographic survey. On this basis, it is of
great significance to carry out the application research of GPS technology digital
topographic survey.