June 15, 2022
Material, Space Technology, Defense & Exploration, Thermal, Propulsion & Energy
Propulsion systems can be classified based on their dependence on the onboard power: electric and non-electric systems. Electric propulsion systems are mainly classified into resistojet, electrospray, ion, Hall and pulsed plasma systems, and they actively require on-board power for their operation, while the non-electric propulsion systems can be classified into …
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May 13, 2022
AI & IT, Space Technology, Defense & Exploration, Technology & Systems Management
Satellite communications represent a cost effective and reliable means of transporting voice, video and data to and from remote locations. The satellite industry is one of those industries where network management plays a key role. Therefore, the requirements for network management solutions for the satellite market are usually very stringent. For …
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May 13, 2022
Comm. & Networking, Space Technology, Defense & Exploration
Historically, the evolution of the modem technology has been exclusively focused on purpose-built solutions with a Printed Circuit Board (PCB), CPU, FPGAs, discrete components, and/or an Application Specific Integrated Circuit (ASIC); and combined with implementation code targeted for the custom hardware environment to deliver a limited set of capabilities and …
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April 27, 2022
Photonics, Space Technology, Defense & Exploration
Constellations of satellites are being proposed in large numbers; most of them are expected to be in orbit within the next decade. They will provide communication to unserved and underserved communities, enable global monitoring of Earth and enhance space observation. In a Low Earth Orbit (LEO), a satellite completes about …
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April 19, 2022
Comm. & Networking, Space Technology, Defense & Exploration
Space is becoming more dynamic than ever with mega-constellations, multi-orbit satellites, and software-defined payloads. The world’s demand for broadband connectivity has created a new generation of high-throughput satellites in geosynchronous Earth orbit (GEO), medium Earth orbit (MEO), and now low Earth orbit (LEO). In the future, 5G networks will …
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April 13, 2022
Comm. & Networking, Space Technology, Defense & Exploration
Substantially more spectrum bandwidth is available at the Ka band than at the Ku band and other lower frequencies. For example, Ku band allocation is around 2GHz for uplink and 1.3GHz for downlink with actual contiguous bandwidth allocation of less than 0.5GHz per satellite. In comparison, the Ka band SATCOM …
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April 4, 2022
AI & IT, Space Technology, Defense & Exploration
Remote sensing is the science of acquiring information about the Earth’s surface without actually being in contact with it. This is done by sensing and recording reflected or emitted energy and processing, analyzing, and applying that information. Some examples of remote sensing are special cameras on satellites and airplanes taking …
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April 4, 2022
Electronics & EW, Space Technology, Defense & Exploration
The small satellite is one of the fast growing sectors in space industries. Small satellites usually refer to satellites below 500 kg, including minisatellite (100–500 kg), microsatellite (10–100 kg), nanosatellite (1–10 kg), picosatellite (0.1–1 kg), and femtosatellite (<0.1 kg). Cube Satellites, aka CubeSats, are a class of nano satellites …
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March 20, 2022
Air Force & Aviation, Space Technology, Defense & Exploration
The constant growth of interest in high-speed wireless communications causes the search for new solutions and new types of radio access networks. Although more than half of the global population is already connected to the Internet, there is still a need for higher broadband connectivity and telecommunication services in suburban, …
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March 14, 2022
Comm. & Networking, Industry & Market Dynamics, Space Technology, Defense & Exploration
A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. The benefit of a satellite communications network lies in its ability to link users to voice, …
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