Sentinel-2 comprises a pair of twin satellites, Sentinel-2A and Sentinel-2B that orbit the planet simultaneously and have a five-day revisit period where a Multispectral Instrument (MSI) on these spacecraft collects data in 13 spectral bands spanning from shortwave infrared to visible. The Earth’s surface is fully visible with a spatial resolution ranging from 10 to… Continue reading Sentinel 2 Imagery
Satellite imagery refers to the visual representation of Earth’s surface captured by imaging satellites orbiting the planet. These satellites utilize various sensors, such as optical and radar, to acquire data in different wavelengths, allowing for a diverse range of applications. In the discipline of Geographic Information Systems, satellite imagery has become a key component that… Continue reading Top 10 Free Satellite Imagery Providers
A vast constellation of tiny satellites called Starlink, formerly the SpaceX Starlink project, is envisioned orbiting the Earth at heights of between 340 and 1,200 kilometers where the principal aim is to establish a dependable and easily obtainable worldwide broadband internet service, particularly in isolated and underprivileged areas. Starlink satellites operate in Low-Earth Orbit (LEO)… Continue reading What is Starlink Satellite?
Know What is Satellite? An artificial object purposefully launched into Earth’s orbit for various reasons including data collection, environmental monitoring and communication assistance is referred to as a satellite and for GIS specialists, these orbiting instruments are data sources offering vital information for geographical analysis and decision-making. In the discipline of Geographic Information Systems, satellites… Continue reading What is Satellite?
Satellite Maps Satellite maps, sometimes referred to as satellite imaging or remote sensing data are pictures of the Earth’s surface that are taken by orbiting spacecraft that are outfitted with certain instruments where these sensors record information across a range of electromagnetic spectrum wavelengths enabling the production of intricate and varied maps. Spatial resolution, spectral… Continue reading What Are Satellite Maps?
Satellite images are now essential resources that provide a plethora of data and insights in a variety of fields where these satellite-orbiting photographs offer a distinctive viewpoint of the Earth’s surface, facilitating the analysis, interpretation and extraction of important spatial data by experts in the GIS sector. How does Satellite Imaging Work? Satellite imaging is… Continue reading What Are Satellite Images Used For?
The use of satellite images has become a fundamental tool for geographers transforming their perception, analysis and comprehension of the planet’s surface and many uses beyond standard mapping have resulted from the combination of remote sensing and GIS. Remote Sensing: A Symbiotic Relationship Understanding the mutually beneficial link between remote sensing and GIS is essential… Continue reading Uses of Satellite Images in Geography
In the field of Geographic Information Systems, satellite imagery has emerged as a vital tool, providing a multitude of data for a wide range of applications starting from urban planning to environmental monitoring where the visible or non-visual data that Earth observation satellites collect while orbiting the Earth is referred to as satellite imagery and… Continue reading Types of Satellite Imagery
The study of obtaining geometric information from photos is the fundamental component of photogrammetry where it builds precise and comprehensive three-dimensional models of objects or landscapes by applying the principles of perspective and triangulation. To analyze and extract spatial information from these overlapping photos, specialist software must first be used to capture the images from… Continue reading Photogrammetry
Satellite imagery provides an aerial perspective of the Earth’s surface and is a fundamental component of GIS where these photos are obtained by satellites with sophisticated sensors that can record information at different wavelengths. Different forms of imaging such as panchromatic, multispectral and hyperspectral are categorized to meet different analytical purposes. The capacity to gather,… Continue reading Importance of Satellite Images
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