The Ministry of Defence recently concluded an extensive survey covering approximately 18 lakh acres of defence land spread across 4,900 pockets throughout the country. The aim was to improve land use and planning, as well as prevent encroachments. Encompassing the use of modern technologies, the achievement is remarkable, marking the first instance since independence where the entirety of defence land has been surveyed employing cutting-edge technology.
The Scope of the Project
Signifying a noteworthy accomplishment in the history of independent India, the survey project targets complete evaluation of defense lands. It was conducted using modern survey technology in collaboration with Revenue authorities of various State Governments.
Modern Technologies Employed
The task employed advanced survey technologies such as Electronic Total Station (ETS) and Differential Global Positioning System (DGPS). ETS combines electronic distance measurement and an on-board computer to assess both vertical and horizontal angles, compute the slope distance from the instrument to a specific point, and collect data for triangulation calculations. DGPS is an enhanced version of GPS navigation that provides superior positioning accuracy compared with standard GPS.
Survey results were improved with the use of Drone imagery and Satellite imagery based surveys, resulting in reliable, robust, and time-bound outcomes. Drone imagery based survey technology was used for the first time to survey lakhs of acres of defence land in Rajasthan, while Satellite Imagery based surveys were used for certain other defence land pockets.
3D Modelling Techniques Used
The project also introduced 3D modelling techniques for better visualization of defence lands in hilly areas by using a Digital Elevation Model (DEM) in cooperation with the Bhabha Atomic Research Centre (BARC). A DEM represents the Earth’s bare ground topographic surface, excluding trees, buildings, and any other surface objects.
The Significance of the Achievement
Carried out on a massive scale, the survey covering nearly 18 lakh acres of defence land demonstrates the effective use of emerging technologies for land survey, aligning with the Central Government’s emphasis on Digital India. The accomplishment speaks volumes about the potential of technology in reshaping the way we view and manage land resources. Furthermore, this project is also part of the Azadi Ka Amrut Mahotsav celebrations, marking 75 years of India’s independence.
Capacity Building for Land Survey
To facilitate continuous learning and growth in the field of emerging survey technologies, a Centre of Excellence (CoE) on land survey and Geographic Information System (GIS) mapping has been established at the National Institute of Defence Estates Management. The CoE aims to provide advanced training to the officers of central and state government departments, thereby strengthening the country’s capabilities in the field of land surveying.
Last Modified: February 15, 2024