Surrey Satellite Technology Ltd. (SSTL) continues to expand the portfolio of modular satellite platforms designed to support Earth observation, communications, scientific research and technology demonstration missions across a broad range of spacecraft sizes. Headquartered in Surrey, United Kingdom, the company has developed a family of flight-proven satellite platforms that combine standardized avionics, scalable architectures and customizable mission configurations. The satellite portfolio including the SSTL-CUBE, SSTL-MICRO and SSTL-MINI platforms provides customers with scalable spacecraft solutions capable of supporting diverse payloads with common engineering principles and flight-proven technologies.
SSTL addresses these requirements through a family of standardized yet highly configurable satellite platforms that can be designed according to customer objectives without requiring completely new spacecraft architectures for every mission. The company’s platforms support applications including Earth observation, telecommunications, atmospheric science, technology demonstration, environmental monitoring, maritime awareness, scientific research and space technology validation. By combining standardized avionics with mission-specific customization, SSTL enables organizations to deploy satellites optimized for their operational needs while benefiting from engineering approaches refined through decades of flight heritage. A defining characteristic of SSTL’s spacecraft portfolio is the modular engineering philosophy. The company incorporates standardized subsystems, avionics, power systems and software architectures that have accumulated extensive operational experience across numerous satellite missions. This common engineering foundation enables greater reliability while simplifying spacecraft integration, testing and long-term mission support. The use of flight-proven technologies also reduces technical risk for customers by leveraging subsystem designs that have already demonstrated successful operation in orbit. This modular architecture allows payloads and mission-specific equipment to be integrated efficiently while maintaining compatibility with established spacecraft systems.
The SSTL-CUBE platform represents the company’s entry-level satellite architecture, designed to support training missions, educational programs, technology demonstrations and compact operational spacecraft. The platform enables organizations to gain practical experience in satellite development while utilizing the same system engineering methodologies employed throughout SSTL’s larger spacecraft programs. Because the platform is based on proven engineering processes, customer teams benefit from established satellite development practices that support reliable mission implementation and operational readiness. SSTL-CUBE provides an effective foundation for organizations seeking to develop engineering expertise while conducting meaningful space missions using compact spacecraft architectures. Within the SSTL-CUBE family, Cube-Vista is a 12U CubeSat platform developed for Earth observation applications. The platform provides a compact spacecraft architecture capable of accommodating imaging payloads while supporting remote sensing missions requiring reliable orbital operation. The standardized design allows Earth observation instruments to be integrated efficiently, making Cube-Vista suitable for organizations seeking to deploy compact imaging satellites for environmental monitoring, land management, research and technology demonstration. The platform demonstrates how CubeSat architectures can support increasingly capable Earth observation missions while maintaining the advantages associated with standardized spacecraft development. Another member of the SSTL-CUBE family is Cube-Signal, an 8U CubeSat platform engineered for communications applications. Designed to support software-defined radio technologies and small low Earth orbit telecommunications missions, Cube-Signal provides a flexible architecture capable of hosting communication payloads within a compact spacecraft format. The platform supports the development of communication technologies, networking demonstrations and telecommunications experiments while benefiting from SSTL’s established spacecraft engineering processes. The standardized architecture also simplifies integration for organizations developing next-generation communication payloads intended for deployment in low Earth orbit. Beyond operational missions, the SSTL-CUBE platform is specifically intended to support training programs for small groups of customer engineers. Through practical satellite development activities, engineering teams gain experience with spacecraft integration, systems engineering, mission planning and operational procedures using proven SSTL methodologies. This educational capability enables organizations to build internal technical expertise while simultaneously developing flight-ready satellite missions. By combining training with practical mission implementation, SSTL helps customers establish long-term capabilities in spacecraft engineering and satellite operations.
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The SSTL-CUBE platform is designed to accommodate a wide variety of payloads across multiple application areas. Compatible payloads include Earth imaging systems, software-defined radios, small LEO telecommunications payloads, technology demonstration equipment, radiation monitoring instruments and Automatic Identification System (AIS) receivers used for maritime vessel tracking. This flexibility enables organizations to tailor CubeSat missions according to specific operational objectives while utilizing a standardized spacecraft architecture. For missions requiring greater onboard resources, SSTL offers the SSTL-MICRO platform. The MICRO platform provides increased payload power, mass capacity, redundancy and overall mission capability compared with smaller spacecraft architectures. Designed around SSTL’s Core Avionics suite, the platform incorporates high-capacity batteries and robust electrical power systems capable of supporting continuous payload operations throughout demanding missions. The enhanced subsystem capabilities enable customers to integrate more advanced payloads while maintaining reliable spacecraft performance across extended operational lifetimes. The Core Avionics suite forms the technological foundation of the SSTL-MICRO platform. This standardized avionics architecture integrates spacecraft control, power management, communications, onboard computing and mission operations within a common engineering framework. The high-capacity electrical power system enables continuous operation of energy-intensive payloads while supporting mission reliability through subsystem redundancy and proven engineering practices. By utilizing a common avionics architecture across multiple missions, SSTL improves system consistency while reducing development complexity for future spacecraft. The SSTL-MICRO platform supports numerous payload types, including Earth imaging instruments, software-defined radio systems, scientific payloads, atmospheric observation sensors, LEO telecommunications equipment, technology demonstration payloads, radiation monitoring instruments and AIS receivers. This broad compatibility enables customers to configure spacecraft for commercial, scientific, governmental or institutional missions without requiring major modifications to the underlying spacecraft platform. The SSTL-MINI platform extends the company’s satellite portfolio by providing a highly capable spacecraft designed for more demanding mission requirements. Like the MICRO platform, MINI is built upon SSTL’s Core Avionics suite but incorporates additional flexibility to accommodate larger payloads and mission-specific spacecraft configurations. This customization enables the platform to support diverse payload geometries while maintaining compatibility with standardized avionics and subsystem technologies.
SSTL-MINI is designed to accommodate several of the company’s highest-performance payload technologies. The platform supports integration of very high-resolution optical imaging systems together with Synthetic Aperture Radar (SAR) payloads capable of acquiring high-resolution radar imagery under a wide range of environmental conditions. The structural flexibility enables spacecraft to be optimized according to payload dimensions, operational requirements and mission objectives while leveraging numerous flight-proven subsystem options developed throughout SSTL’s satellite heritage. This combination of customization and standardized engineering provides customers with a spacecraft capable of supporting demanding remote sensing and advanced observation missions. Across the complete satellite platform portfolio, SSTL emphasizes flexibility, scalability and mission adaptability. The ability to integrate different payloads within standardized spacecraft architectures enables customers to develop tailored missions efficiently while benefiting from SSTL’s accumulated operational experience and engineering heritage. Surrey Satellite Technology provides satellite solutions that combine modular engineering, Core Avionics technology, customizable spacecraft structures and extensive flight heritage. By supporting payloads ranging from Earth observation imagers and software-defined radios to SAR systems and atmospheric science instruments, SSTL continues to provide flexible spacecraft platforms that address the evolving needs of the global space industry while enabling reliable and efficient mission deployment across a wide spectrum of applications.
About Surrey Satellite Technology
Surrey Satellite Technology Ltd. (SSTL) is a satellite manufacturer and systems engineering company headquartered in Surrey, United Kingdom, specializing in the design, development, manufacture, testing and operation of small satellite systems. The company provides a comprehensive portfolio of satellite platforms, payloads and mission services for Earth observation, communications, navigation, scientific research and technology demonstration missions. SSTL’s spacecraft portfolio includes CubeSat, micro and mini satellite platforms built on flight-proven avionics and modular architectures that support a wide range of commercial, government and institutional applications. With decades of experience in small satellite engineering, SSTL delivers end-to-end mission capabilities spanning satellite design, assembly, integration, testing, launch support, mission operations and in-orbit services.
