<h1>Economic Survey 2021-22: Geo-Spatial Data Key in Tracking India's Infrastructure and Economic Growth via Satellites and Drones.</h1> The Economic Survey for FY 2021-22, presented in Parliament, emphasizes the use of geo-spatial data and cartographic techniques to track and represent long-term developments in India. It highlights the role of data from satellites, drones, and mobile phones in analyzing infrastructure development, such as metro-rail networks, highways, and airports. The survey illustrates trends in urban expansion, electricity supply, and economic activity using night-time luminosity data. It also examines metro-rail network growth in cities like Delhi and Bangalore. Additionally, the survey uses satellite imaging to analyze water storage, population density, crop cycles, and wasteland redeployment, underscoring data's importance in economic tracking.