Meridian Satellite System Explained

The Meridian satellite system is a series of Soviet-era communication satellites that played a crucial role in global communication.

Developed by the Soviet Union in the 1960s, the Meridian system was designed to provide communication services for the Soviet military and government.

The system consisted of a network of satellites orbiting the Earth at an altitude of around 1,000 kilometers.

Each satellite weighed around 2,500 kilograms and had a lifespan of about 5 years.

These satellites were equipped with transponders that could amplify and retransmit radio signals, enabling communication between the Soviet Union and its allies.

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The Meridian satellite series was developed in the mid-2000s by ISS Reshetnev, the main Russian satellite manufacturer.

These satellites use a 3 axes stabilized pressurized platform, which helps to maintain stability and control.

The on-board computer and propulsion systems are likely to be similar to those used in the Uragan-M satellites of the Glonass satellite navigation system.

The Meridian satellites have a mass of approximately 2000 kg, which is relatively heavy.

They also feature orientable solar arrays, which allow them to adjust their angle to maximize energy absorption.

The satellites carry three transponders designed to work with the Raduga satellites.

The manufacturer announced a lifespan of 7 years for the satellites in this series.

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The Meridian satellites are placed in a very elliptical Molniya orbit of 900 × 39000 km x 63°, which allows them to remain visible from Arctic areas for a large part of their orbit.

This orbit is particularly useful for providing links with ships and planes operating in the Arctic Ocean, as well as with stations based in the Far East and Siberia.

The Meridian satellites are launched using a Soyuz 2.1a rocket with a Fregat upper stage, which is launched from the Plesetsk cosmodrome.

The satellite is designed for mixed civil and military use, taking advantage of its unique orbit to provide a range of services to remote areas.

The Meridian satellite series was designed to replace the Molniya-1 series ComSats spacecraft, providing communications for ships and ice-reconnaissance aircraft operating in the Northern Sea Route.

The first Meridian satellite, Meridian n°11L (1), was launched on December 24, 2006, and successfully reached orbit. It was followed by several other launches, including Meridian n°12L (2), which experienced a partial success due to a perigee that was lower than planned.

The Meridian satellite series is equipped with a multi-trunk relaying communications apparatus, allowing it to supplement existing communications systems provided by other satellites.

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The Meridian satellite series has a unique numbering system. The manufacturer ISS Rechetnev starts numbering its satellites at 11, with the first numbers reserved for test specimens. The letter L is attached to the number to indicate that it is a flying copy.

The first Meridian satellite, Meridian n°11L, was launched on December 24, 2006, from Site 43/4 at the Plesetsk Cosmodrome. It was a success, reaching orbit and becoming the first Meridian satellite in space.

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The Meridian satellites have been launched using the Soyuz 2.1aFregat rocket. This rocket combination has been used for several successful launches, including Meridian n°13L, which was launched on November 2, 2010.

Here's a list of the first few Meridian satellites, including their launch dates and success status:

The Meridian satellites have also been used for various purposes, such as providing communication services. For example, Meridian-M n°18L, launched on July 30, 2019, was the first flight of the modernized Meridian-M version.

The Meridian-1 and Meridian-2 satellites were launched by Russia to provide communications for ships and ice-reconnaissance aircraft operating in the Northern Sea Route.

Meridian-1 was launched on December 24, 2006, from Plesetsk by a Soyuz-2 rocket. The satellite was developed by NPO Prikladnoi Mekhaniki and was put into a highly elliptical 12 hour Molniya orbit.

The Meridian satellite series was designed to replace the Molniya-1 series ComSats spacecraft, which operated from 1965 to 2004. This will allow communications with shore and ground stations and a wide network of ComSat stations in northern areas of Siberia and the Far East.

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Meridian-1 was equipped with a multi-trunk relaying communications apparatus and can be used to supplement existing communications systems provided by the "Gorizont" and "Express-A" satellites. It was launched into a 1.012 x 39,816 km x 62.8 deg over 12 hour `Molniya' orbit.

Meridian-2 was launched on May 22, 2009, by the Soyuz-2-1a booster with the Fregat escape maneuvering last stage. The satellite was launched into a 290 x 36,460 km by 62.8 degree orbit, below the nominal 1,000 x 39,800 km orbit.

Unfortunately, the Fregat stage was not able to make up for the last burn time of apparently 5 seconds, resulting in the satellite not being able to maintain its desired stable orbit.

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The Meridian satellite program has seen a total of 10 successful launches, with the first one taking place on December 24, 2006, carrying the Meridian n°11L satellite into orbit.

Meridian satellites are launched using the Soyuz 2.1aFregat-M rocket, with the first generation satellites being replaced by the modernized Meridian-M version, which made its debut on July 30, 2019.

Here are the details of the successful Meridian launches:

The Meridian satellite series has had its fair share of launches, with the first one being Meridian n°11L in 2006. This satellite was launched on a Soyuz 2.1aFregat rocket from Site 43/4 at Plesetsk.

The numbering system for these satellites is quite specific, with the manufacturer ISS Rechetnev starting at 11 and reserving the first numbers for test specimens. The letter L is added to indicate a flying copy.

The first Meridian satellite in orbit was Meridian n°11L, which was launched on December 24, 2006. It was a success, and its COSPAR ID is 2006-061A.

Here are the details of the first few Meridian satellites:

The Meridian-M version was first launched in 2019 with Meridian-M n°18L. This satellite was launched on a Soyuz 2.1aFregat-M rocket from Site 43/4 at Plesetsk.

SpinLaunch secured $30 million in a recent financing round, led by ATW Partners and including a $12 million strategic investment from Kongsberg Defence & Aerospace.

The funding will support the development of Meridian Space, a low-Earth orbit broadband satellite constellation, as well as scaling SpinLaunch's orbital launch system and production infrastructure.

SpinLaunch's kinetic launch system uses a ground-based centrifuge to spin payloads to hypersonic velocities, replacing up to 75% of traditional fuel-based energy with mechanical energy.

This approach significantly curbs cost per kilogram, estimated between $1,250–$2,500, and reduces emissions.

The company's low-cost, high-frequency launch approach targets a structurally different segment of the space market.

Meridian Space is a broadband constellation composed of lightweight microsatellites, manufactured by Kongsberg NanoAvionics under a €122.5 million contract.

The initial deployment includes two prototypes, including an in-orbit demonstrator planned for 2026, and proceeds to serial production of 280 satellites, with scalability to at least 1,200 in future phases.

The constellation uses fixed-track orbits and reflectarray antennas to simplify ground terminals, enabling terabits-per-second capacity in a single launch.

SpinLaunch has also developed a multi-band reflectarray antenna on the ground, optimizing bandwidth and energy efficiency by combining aspects of reflector and phased array designs.

With fresh funding in place, SpinLaunch can accelerate construction of its orbital accelerator facility, particularly on Adak Island, Alaska.

The company aims to drive toward the first customer link projected in late 2026, depending on achieving technical readiness, regulatory approvals, and early commercial or government partnerships.

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