Blog

How Often Does Google Maps Update Satellite Images
2025-12-19
~ 7 min
(Article updated: 2025-12-19)
Discover how frequently Google Maps updates its satellite imagery and why it may not meet the needs of time-sensitive projects. Learn alternatives for accessing fresh, high-resolution data on demand.
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How to Add Satellite Imagery to QGIS Step-by-Step Tutorial
2025-12-16
~ 8 min
(Article updated: 2025-12-16)
Learn how to add, visualize, and analyze satellite imagery in QGIS using free, beginner-friendly methods. This guide covers XYZ tiles, WMS/WMTS services, and local raster files, plus practical tips for better rendering and analysis. Discover how tools like OnGeo streamline imagery selection, helping you move faster from raw data to actionable geospatial insights.
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How to Get Satellite Imagery for Free
2025-12-08
~ 7 min
(Article updated: 2025-12-08)
This guide shows you where to find the best free satellite imagery , how to download it , how to use it in QGIS , where to get near–real-time images, and what matters when choosing the right dataset. You’ll also see how OnGeo simplifies the whole process by providing ready-made satellite reports with no accounts, no subscriptions, and zero technical skills required.
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Satellite Imagery Definition and Applications in 2026
2025-12-05
~ 7 min
(Article updated: 2025-12-05)
What Is Satellite Imagery? Satellite imagery refers to pictures of Earth captured by sensors mounted on satellites orbiting the planet. These sensors detect reflected light, emitted radiation, or other wavelengths to record what is happening on the surface below. The result is data—often visual, sometimes multispectral or thermal—that can be analyzed to understand land use, vegetation, infrastructure, water bodies, environmental change, and much more.
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Understanding DEM, DTM and DSM in Satellite Earth Observation
2025-12-03
~ 6 min
(Article updated: 2025-12-03)
This article explains the differences between Digital Elevation Models (DEMs), Digital Terrain Models (DTMs), and Digital Surface Models (DSMs) in satellite Earth observation. It covers their definitions, applications, and data sources, including optical satellites, radar, and LiDAR. By clarifying these concepts and their specific uses, readers will better understand how to select the right elevation model for urban planning, forestry, hydrology, renewable energy, and disaster management.
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Understanding Satellite Image Resolution Low vs High Resolution
2025-11-26
~ 8 min
(Article updated: 2025-11-26)
Satellite image resolution determines how much detail a satellite can capture—from broad environmental patterns to fine-scale urban features. Understanding the differences between low and high resolution helps professionals choose the right data for climate monitoring, urban planning, agriculture, and disaster response.
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War in Sudan Satellite Imagery
2025-11-25
~ 7 min
(Article updated: 2025-11-25)
What’s happening in the forests of eastern DRC isn’t just a side effect of war - it’s part of how armed groups survive and finance their operations. Thanks to modern satellite technology, the scale and pace of this destruction can finally be tracked, measured and documented with a level of detail that wasn’t possible before. This article outlines what satellite imagery reveals, why these findings matter.
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How Satellite Imagery Works From Space to Your Screen
2025-11-14
~ 9 min
(Article updated: 2025-11-14)
Satellite imagery has transformed how we understand our planet. This article explains how data is captured in orbit, processed on the ground, and turned into the clear, actionable visuals we use for weather tracking, urban planning, environmental monitoring, and scientific analysis.
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