Marcin Frąckiewicz

The first space images were captured in 1946 from a sub-orbital U.S. V-2 rocket at about 105 km altitude. The first actual satellite photograph of Earth was taken on August 14, 1959 by the U.S. Explorer 6 satellite. In 1960, TIROS-1 transmitted the first television image of Earth from orbit, a milestone for weather observation. Landsat 1, launched in 1972, began the longest-running civilian Earth-observation program with a 50-year archive, and Landsat 9 was launched in 2021 to continue it. The KH-11 KENNEN program began near-real-time digital imaging in 1977, eliminating the need for film return. IKONOS, launched in 1999,

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 about 0.5 second latency, and IsatPhone 2 offers up to 8 hours of talk and 160 hours of standby. Thuraya, based in the UAE, operates 2 GEO satellites covering roughly 160 countries in Europe, Africa, the Middle East, Asia, and Australia, with XT-LITE priced around $650. Globalstar currently operates a Gen2 constellation of 24 LEO satellites at about 1,414 km,

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 United States. HughesNet uses geostationary satellites and advertises speeds up to 25 Mbps download and about 3 Mbps upload on all plans. Viasat offers downloads from roughly 12 Mbps up to 100 Mbps with uploads around 3 Mbps. Starlink uses a low-Earth orbit constellation and typically provides 50–200 Mbps download and 20–40 Mbps upload with latency around 20–40 ms. Amazon’s

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 a license (No Objection Certificate) from the Department of Telecommunications before bringing one in. China maintains a de facto ban on private sat phones, requiring registration for limited state use and has deployed jammers in some areas to block unapproved devices. Chad bans satellite phones under any circumstances, with Thuraya explicitly outlawed and Iridium sometimes tolerated. Myanmar (Burma) effectively bans

The United States operates the Advanced Extremely High Frequency (AEHF) constellation, delivering jam-resistant, global, protected military communications including nuclear command and control links. Navstar GPS is a 31-satellite global navigation system that provides precise positioning, navigation, and timing to guide munitions such as JDAM and to synchronize encrypted networks. Defense Support Program (DSP) and the Space-Based Infrared System (SBIRS) form the U.S. early-warning constellation that uses infrared sensors to detect missile launches worldwide. U.S. Keyhole KH-11 optical reconnaissance satellites (and successors) provide high-resolution imagery from space. Russia operates the Liana ELINT constellation, including Lotos-S1 in low orbit and Pion-NKS in

By late 2022, more than 10,000 aircraft worldwide were equipped with in-flight connectivity, and about 65% of airlines planned further IFC investments in the next few years. Aireon’s space-based ADS-B payloads on Iridium NEXT have been operational since 2019, enabling global real-time tracking and supporting ICAO’s 15-minute GADSS position reporting standard. COSPAS-SARSAT, a global satellite distress system, relays 406 MHz ELT signals from aircraft to ground stations to coordinate search and rescue and has saved thousands of lives. Global Navigation Satellite Systems—GPS (USA), GLONASS (Russia), Galileo (EU), BeiDou (China)—provide precise positioning, while SBAS like WAAS and EGNOS offer 1–2 meter

L-band MSS terminals, such as Inmarsat FleetBroadband and Iridium Certus, provide global coverage with compact antennas but limited data throughput. Ku-band VSAT (12–18 GHz) has been the maritime workhorse, Ka-band HTS (26–40 GHz) offers higher capacity, while C-band deployments are restricted near shore due to interference and large dish requirements. GEO satellites offer broad coverage with about 600 ms latency, while LEO Iridium NEXT, a 66-satellite constellation upgraded 2017–2019, provides true global L-band coverage and was recognized as a GMDSS provider in 2020. SpaceX Starlink and OneWeb have emerged as disruptive LEO players in maritime, with Starlink signing on nearly