Explanation – Global Navigation Satellite Systems (GNSS) can be prone to errors. Hence, Survey of India has set up a network of Continuously Operating Reference Stations (CORS) to enhance accuracy, offering highly precise real-time positioning with an accuracy of approximately ±3 cm. CORS can be applied in studying space weather, Bharatmala and Sagarmala Projects for improving the logistics sector and other government schemes for mapping and surveys. In areas with high levels of atmospheric interference, the CORS station may not be able to provide accurate positioning data and similarly in regions characterized by inadequate GPS signal reception.

Source: ForumIAS