Satellite Communications

Low Earth Orbit (LEO) nano-satellites (CubeSats) will be an integral part of 6G communications networks. Constellations are currently being deployed to provide high-speed low latency Internet connections within the standard Satellite bands. Our research explores the use of higher frequency and larger bandwidth channels to increase the data capacity within these constellations. We look at the impact that the atmosphere has on these channels and how to provide reliable quantum secured communication. We primarily focus on the application of Quantum Key Distribution via space. 

Key areas of expertise:

• Quantum Key Distribution via Space 

Researching the parameters for optimal QKD bit rate from Low Earth Orbit satellites. Focused on wavelength and beam width within the constraints of a nano-satellite format.  

• Atmospheric Modelling  

Looking at the impacts of turbulence, absorption, scattering, and diffusion on the propagation of Electromagnetic waves through the atmosphere, specifically at Mid-Infrared wavelengths.  

• Nano Satellites (CubeSats) 

Investigating the engineering challenges of minimising the payload whilst incorporating the components for classical and quantum communications.

Infrastructure

• Satellite Channel Emulator 

Designed around the L and lower C bands (0-3GHz), the emulator consists of a high-performance multi-channel signal generator, a Satellite Link Simulator, and a set of GNSS reference receivers. The emulator is modular by design and enables components to be swapped in and out anywhere is the end-to-end chain.  

• Satellite Ground Station 

A VHF/UHF/L-Band ground station – One of the westernmost ground stations in Europe. It consists of a static, omni-directional antenna array, for receive, coupled with another directional receive and transmit antenna array with full azimuth and elevation tracking. 

• RF Test Equipment 

A collection of Signal Generators, Oscilloscopes, Spectrum Analysers, Network Function Generators, Arbitrary Waveform Generators, Software Defined Radios, and Clock sources (NTP and GPSDO). Typically operating within the established telecommunications bands, <6GHz.  

SEE Space Network 

SEE Space is a network led by Walton Institute in Waterford Institute of Technology, and Blackrock Castle Observatory in Munster Technological University. The goal of SEE Space is to combine expertise in Space4.0 and ICT to create impact for Society, Economy, and the Environment.