Advances in collecting 3D spatial data using lidar sensors, drones, self-driving cars, and terrestrial laser scanners have changed the way geographic environments are represented and analyzed. Contrary to conventional 2D imagery, 3D point clouds are characterized by detailed spatial information on the geometry, structure, and elevation of actual objects. On the other hand, working with large point cloud data faces many computing challenges due to their irregularity, varied de

Geographic Information Systems (GIS) employ coordinate systems to effectively represent, analyze, and visualize spatial objects on the globe. Understanding coordinate systems is vital in working with data such as satellite images, DEMs, LiDAR, or any vector data, such as shapefiles. The coordinate system in GIS defines how geographical locations are denoted through numbers. It provides the mathematical basis for establishing the position of geographical objects, measuring dis

Remote sensing is an important technology in the fields of geographic information systems (GIS), environmental studies, agriculture, urban planning, disaster management, and land use studies. With the help of remote sensing technology, information is collected about the Earth’s surface through the use of satellites, airplanes, and UAVs. Sometimes, raw imagery from satellites and other sources cannot be used for precise geospatial analysis. Data processing in remote sensing co

Geographic Information Systems (GIS), surveying, cartography, and remote sensing depend on the accuracy of the spatial reference system to depict locations on the surface of the Earth. A key element of these systems is a GIS datum, which provides a framework for geographic coordinates and locates spatial features. A GIS datum allows defining the shape, size, and orientation of the Earth. A GIS datum enables GIS software to understand the coordinates of latitude, longitude, an

Coordinate reference system knowledge is very important for proper mapping, GIS, surveying, and remote sensing. There are two coordinate reference systems that are popular, namely WGS84 (World Geodetic System 1984) and UTM (Universal Transverse Mercator). While both coordinate reference systems are popular, their uses differ, as well as how geographic places are represented through them. The WGS84 coordinate reference system is one which is globally based and which helps to i

Change detection using satellite imagery refers to the remote sensing approach that is employed to determine changes that have taken place on the surface of the Earth. Changes that can be monitored include land use, urbanization, deforestation, agricultural status, bodies of water, and impacts of natural disasters. Change detection uses multitemporal imagery, processing, and spectral and geospatial analysis to detect differences between two or more observations. This helps in

ArcGIS Pro is a professional-grade geographic information system (GIS) software, designed by Esri to create, manage, analyze, and visualize geospatial information. The software offers a complete solution for handling vector data, raster images, 3D objects, terrain layers, and spatial databases. Professionals in GIS employ ArcGIS Pro to reveal geographic relationships, conduct spatial analysis, create maps, and make informed decisions using geospatial information. In contrast

World Space Week 2026 runs from 4 to 10 October and aims to bring global attention to space exploration, satellite technology, innovation, and the growing impact of space-based data on life on Earth. The theme for this year is “Rocket Revolution,” which highlights how quickly launch technology and the space economy are growing. The increasing number of commercial satellites and spacecraft in orbit is increasing the importance of satellite data far beyond scientific research i

The Earth's land surface is always in flux because of both natural processes and human activities. Urbanization, logging, agriculture, wildfires, floods, drought, mining, and weather patterns can significantly change the landscape over time. Tracking such changes involves more than analyzing just one snapshot. A time series approach provides a systematic means of monitoring the evolution of land surface in time. Using a combination of satellite imagery, remote sensing, geogra

The use of satellite imagery is prevalent in Geographic Information Systems (GIS), remote sensing, environmental monitoring, agricultural practices, urban planning, disaster management, and geospatial analytics. But it might sometimes be difficult to find the exact satellite imagery in huge and constantly expanding repositories. STAC API (SpatioTemporal Asset Catalog API) is a standardized protocol that enables the discovery of geospatial assets by using spatial and temporal

Satellite imagery provides a reliable stream of data for monitoring the Earth's surface at regional, national, and global scales; however, large satellite imagery datasets require considerable time and effort. Nevertheless, extracting relevant information from large datasets of satellite imagery requires considerable time efforts. This problem is solved by means of applying computer vision techniques to satellite imagery. They allow automatic recognition, classification, segm

The oceans take up over 70 percent of the planet's surface, and they have a significant role to play in climate regulation, marine ecosystems, transportation, fisheries, and coastal economies. The monitoring of such a large dynamic environment cannot rely on ground surveying alone. Using satellite imagery to monitor oceans is a solution for efficiently observing the state of oceans. State-of-the-art Earth observation satellites use optical, multispectral, hyperspectral, and S

There are two technologies that are used for the collection, management, analysis, and understanding of geographical data: Geographic Information System (GIS) and Global Positioning System (GPS). Even though GIS and GPS are employed in conjunction, their functions are not similar. While GPS works primarily to determine the location of a receiver, GIS is used for the purposes of storing, analyzing, visualizing, and managing spatial data. It is important for specialists in surv

Remote sensing is a key technology that allows the gathering of information from the Earth's surface without being in physical contact with the studied areas or objects. This technology is an integral part of Geographic Information Systems (GIS), environmental monitoring, agriculture, forestry, urban planning, disaster management, military operations, and observations related to the planet. Any remote sensing device consists of a remote sensing sensor. The sensor's purpose is

Geospatial technology is now an integral component of modern decision-making processes in such sectors as urban development, agriculture, transport, environment, surveys, military, construction, and disaster management. With the rising amounts of geospatial data collected by businesses, proper documentation of this data has become as crucial as the data itself. Geospatial documentation provides information that is required to know about data sources, their collection methods,

Geographic Information Systems (GIS) require accurate locations. Each point, line, polygon, satellite imagery, drone orthophotomosaic, and spatial database needs to be linked with a coordinate reference system (CRS), which describes how locations on the surface of the Earth should be expressed in coordinates. EPSG codes represent a universal way of referencing such coordinate reference systems. Knowledge of EPSG codes is crucial for GIS software usage, creation and usage of s

Spatial Reference System Identifier (SRID) is the name for a unique numeric identifier used to describe the coordinate reference system (CRS) used in the definition of geographical or spatial data. The use of SRID identifiers is critical in Geographic Information Systems (GIS), databases, maps, and any geospatial application since only coordinates alone cannot define how the positions are referenced on the Earth's surface. The coordinates (-77.0365, 38.8977) could be used to

Satellite images are a primary source of geospatial data used in mapmaking, urban planning, environmental observations, infrastructure management, defense, agriculture, disaster relief operations, and many other fields. With advances in satellite imaging technology, the user community benefits from ever-improving satellite imagery with higher spatial resolution. Sub-meter satellite imagery represents one of the most important definitions of high-resolution Earth observation.

Drone mapping has revolutionized surveying, construction, agriculture, infrastructure inspection, mining, and GIS data collection by enabling high-resolution aerial imaging in a short time. Yet, getting sharp images is just half of the work done. The geolocation of each captured image is critical, as the accuracy of the orthomosaic, DEM, DSM, point clouds, and 3D models depends on it. This is why RTK (Real-Time Kinematic) and PPK (Post-Processed Kinematic) positioning methods

The distinction between GPS and GNSS leads to confusion in industries like navigation, surveying, GIS, drone mapping, agriculture, and geospatial positioning. The terms are used interchangeably, but GPS is a satellite navigation system, while GNSS refers to the technology comprising multiple global satellite navigation systems. Grasping the difference between GPS and GNSS is essential if someone wants to choose positioning tools, measure positioning accuracy, or develop appli