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Sky Scanners: How SAR Imaging Satellites Are Redefining Earth Observation

About 75% of the planet is obscured by cloud cover or darkness at any moment, making optical imaging inaccessible. Synthetic Aperture Radar (SAR) satellites actively illuminate the ground with microwave radar and synthesize a large aperture by moving the antenna

7 June 2025

Satellites·Technology

Satellite Phones: Comprehensive Global FAQ

Iridium operates about 66 LEO satellites at roughly 780 km, offering truly global coverage including the poles with a one-way latency around 0.1–0.2 seconds. Inmarsat uses 3–4 GEO satellites at about 35,786 km, delivering near-global coverage (roughly ±70° latitude) with

7 June 2025

Connectivity·Technology

Starlink Satellite Internet FAQ

Starlink is SpaceX’s satellite-based broadband internet service, and by 2025 the constellation has launched over 7,500 satellites with about 6,750 active in orbit. The satellites orbit in low Earth orbit at roughly 550 km altitude, delivering typical download speeds of

7 June 2025

Connectivity·Satellite Internet·Space Technology·Starlink

Satellite Internet FAQ

Traditional GEO satellite internet sends data roughly 22,000 miles to a satellite and back, yielding a round-trip latency of about 600–800 ms. Satellite internet can reach virtually anywhere with a clear view of the sky, including most of the continental

6 June 2025

Connectivity·Internet Access·Satellite Internet·Technology

Connecting Colombia: Bridging the Digital Divide from Cities to the Amazon

As of early 2025, 41.1 million Colombians were internet users, representing about 77% of the population. By 2025 Colombia had 78.3 million cellular mobile connections in service, roughly 147% of the population. The urban–rural gap remains wide: 63.9% of households

6 June 2025

Connectivity·Digital Divide·Internet·Technology

Satellite Technologies FAQ

Sputnik 1, launched by the Soviet Union on October 4, 1957, was the first artificial satellite. Explorer 1 became the United States’ first satellite in 1958. As of 2025, there are roughly 11,000+ active satellites orbiting Earth, with tens of

6 June 2025

Communication·Satellite Technology

Where Satellite Phones Are Illegal?

Bangladesh bans satellite phone use; possession can lead to arrest and imprisonment. North Korea prohibits all unauthorized communication devices, foreigners must surrender phones and privacy is not guaranteed, with detention possible. India restricts satellite phones to government‑approved Inmarsat devices, requiring

6 June 2025

Communication·Legal Issues·Technology

Eyes in the Sky: How Satellites Are Revealing Our Changing Climate

Radar altimeters on TOPEX/Poseidon, Jason-1, Jason-2, Jason-3, and Sentinel-6 Michael Freilich have provided a global mean sea level record since 1992, showing a rise of about 3.3 millimeters per year and roughly 10 centimeters over 30 years. Arctic summer sea

6 June 2025

Climate Change·Satellites·Technology

Chad’s Digital Desert: The Shocking Truth Behind the Country’s Internet Revolution

As of 2025, Chad has about 2.74 million internet users (13.2% of the population), with roughly 87% of Chadians still offline. There are about 14.5 million active mobile subscriptions in Chad (roughly 70% of the population) in 2025, with many

6 June 2025

Digital Transformation·Internet·Technology

Everything You Never Knew You Needed to Know About Differential and Precise Point Positioning

DGNSS improves GNSS accuracy by using stationary reference receivers to broadcast corrections to rovers, transforming standalone GPS accuracy from about 5–15 m to sub-meter or centimeter levels, with SBAS like WAAS (USA) and EGNOS (Europe) delivering about 1–3 m for

6 June 2025

Innovation·Technology

Internet Access in Cape Verde: Current Status and Outlook

As of early 2025, about 73.5% of Cape Verde’s population were internet users, roughly 387,000 people out of ~526,000. Fixed broadband subscriptions totaled about 38,000 in 2023, approximately 7 per 100 people. Cape Verde Telecom (CVTelecom) reported passing over 22,000

6 June 2025

Connectivity·Infrastructure·Internet·Technology

Global Navigation Showdown: How GPS III, Galileo, BeiDou & GLONASS Upgrades Will Change How You Navigate

GPS III, first launched in 2018, delivers three times the accuracy and eight times the anti-jamming performance of previous GPS generations, with a GPS III satellite named Katherine Johnson launched by SpaceX in 2025. GPS modernization includes the L1C common

6 June 2025

Innovation·Satellites·Technology