Lidar (light detection and ranging) is an optical remote-sensing technique that employs laser light to densely sample the earth's surface, yielding highly accurate x, y, z measurements. Lidar, which is mainly used in airborne laser mapping applications, is gaining popularity as a low-cost compared to traditional surveying techniques such as photogrammetry. Lidar generates massive point… Continue reading GIS Integrated LiDAR Mapping and Its Applications
In the year 2022, the surface temperature of the Earth was 1.55 Degrees Fahrenheit warmer than the average of 57 Degrees Fahrenheit (NOAA,2023). As the world warms, the frequency and intensity of climate change related disasters amplify, posing a significant risk. Heatwaves, Droughts, Hurricanes, and typhoons have caused havoc across every area, leaving no continent… Continue reading The Role of Remote Sensing in Tackling Crop Insurance Anomalies
This image of South Qatar shows how the ebb and flow of the tide can create some unusual formations. Here, water and sand conjure up the shape and color of a tree as the tide swirls into the Persian Gulf. Qatar, an Arab Emirate in the Middle East, is one of the region’s wealthiest states… Continue reading Satellite image of Khor al Adaid, South Qatar
Introduction: Satellites look directly down at the earth, which show flat and map-like topography, but only few satellite images give us a sense of the landscape. On September 10, 2015, WorldView-3 followed an unusual route. As it passed over the Pacific, it turned back and looked at the continent to the east i.e. Los Angeles,… Continue reading “Looking through its legs” A New Kind of Landscape Photography.
The ‘smart’ revolution. We are living in a generation where most common and important word is ‘smart’. From smart people to smart phones and from smart maps to smart cities everything is getting smarter. Geospatial technology is progressing by leaps and bounds towards this smartness. The technology itself is getting smarter and contributing in other… Continue reading Planimetric Mapping
Introduction An AMDB is a Geographic Information System (GIS) based representation describing the topography of an airport. The geometry of aerodrome features is modelled by points, lines and polygons. Additional information characterizing the features and their functions is stored as attributes. Examples of attributes are name or identifier, quality parameters and surface type. Vertical… Continue reading AMDB | An Integral Part of the Modern Aeronautical Information Management (AIM)
Pipeline Monitoring System and Surveillance Pipeline equipped with pumps, valves, and other devices to transfer liquids, gases, and slurries from one place to another. Pipeline monitoring systems and surveillance provide a technique to monitor the condition of a pipeline such as evaluation of corrosion, preservation of the environment, leakage detection, etc. Airborne Pipeline monitoring… Continue reading Pipeline monitoring and surveillance using Geospatial Approach
The three most frequently used geospatial features generated by mapping systems are digital elevation models (DEM), digital surface models (DSM), and digital terrain models (DTM). Because each model employs a different methodology, each data product provides a different elevation value. Digital Elevation Model (DEM) A digital elevation model is a bare-earth raster grid referenced to a vertical datum.… Continue reading Elevation Models in GIS Environment
In the vast realm of technological progress, few innovations have captivated our collective imagination and transformed the way we perceive our world as profoundly as high-resolution satellites. These remarkable spacecrafts, bristling with cutting-edge imaging sensors, have elevated the art of Earth observation to unprecedented levels of precision and detail. High-resolution satellites are our window to… Continue reading Unlocking the World’s Secrets: High-Resolution Satellites and Their Transformative Power
No discussion about earth observation and Remote Sensing is complete without a mention of Landsat satellites. The Landsat program is the longest running endeavor for acquisition of satellite imagery of Earth. On July 23, 1972 the Earth Resources Technology Satellite , eventually renamed to Landsat, was launched. The most recent, Landsat 7 with ETM+ on… Continue reading Landsat 8 to continue the legacy