Tag: Satellite

Comoros is a small archipelago nation in the Indian Ocean, comprised of three main islands – Grande Comore (Ngazidja), Anjouan (Ndzuwani), and Mohéli (Mwali) – along with the neighboring French territory of Mayotte freiheit.org. Its geography poses unique challenges for telecommunications: the islands are separated by ocean channels and are volcanic and mountainous, making infrastructure…
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Definition and Basic Principles Satellite imagery refers to images of Earth (or other planets) collected by orbiting satellites. These images are a form of remote sensing, meaning the data are acquired from a distance without direct contact. Satellites carry sensors that detect electromagnetic radiation reflected or emitted from the Earth’s surface. Most imaging satellites use passive sensors that rely…
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Satellite Phone Basics What is a satellite phone? A satellite phone (or satphone) is a mobile phone that connects directly to orbiting satellites instead of terrestrial cell towers. This means it can place calls and send messages from almost anywhere on Earth, especially in regions without cellular coverage. Like a regular cell phone, a satphone supports voice calling…
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General Overview SpaceX has launched thousands of Starlink satellites (over 6,750 in orbit by 2025) to form the world’s largest satellite constellation and provide global internet coverage phys.org. Q: What is Starlink?A: Starlink is a satellite-based broadband internet service operated by SpaceX. It uses a constellation of small satellites in low Earth orbit (LEO) to beam internet connectivity…
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Satellites are objects that orbit a larger body, like Earth or another planet spaceplace.nasa.gov. They play many roles in modern life, from beaming TV signals and providing internet/phone connections to monitoring weather and enabling GPS navigation spaceplace.nasa.gov spaceplace.nasa.gov. Below is an extensive FAQ, grouped by topic, answering common questions about satellites and related technologies in…
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Stacks of Starlink satellites awaiting deployment in orbit. A new space race is underway—not for the Moon or Mars, but to blanket Earth in high-speed internet from space. Private companies and governments are launching mega-constellations of satellites by the thousands, aiming to beam broadband connectivity to every corner of the globe. The stakes are enormous:…
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Definition and How Geostationary Orbit Works A geostationary orbit (GEO) is a circular orbit around Earth’s equator at approximately 35,786 km altitude (about 22,236 miles) where a satellite orbits once per sidereal day (~23 hours 56 minutes) in the same direction as Earth’s rotation en.wikipedia.org esa.int. This precise altitude and orbital period make the satellite…
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Introduction: Modern military forces rely heavily on satellites as force multipliers and intelligence assets in space. Over the last few decades, warfare has shifted toward highly technology-driven operations, making space-based capabilities central to strategic planning nsin.us. Military satellites – once limited to Cold War-era spy missions – now form the ever-watchful “eyes in the sky,” delivering critical communications, surveillance, navigation,…
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Definition and Overview Aviation satellite services refer to the use of satellites to support air travel through communication, navigation, surveillance, and connectivity functions. These services enable aircraft to maintain links far beyond the range of ground-based radios by connecting to communications satellites en.wikipedia.org. Global Navigation Satellite Systems (GNSS) provide precise positioning and navigation signals to…
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Maritime satellite services enable critical communications for ships and offshore assets anywhere on the globe. This report examines the technologies, providers, applications, market trends, and regulatory frameworks shaping the maritime satellite communication (MSC) industry. Technologies and Systems in Maritime Satellite Communications Modern maritime satcom systems can be broadly divided by service type and frequency bands:…
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