Explore our Celestia C-STS Product Range
Celestia is a group of companies with a European footprint, located in five different European Countries. They have their own R&D Centre, Test Facilities and Manufacturing Plant, Celestia is a leading Solid State Power Amplifier company and provides prototyping, design, manufacturing and integration of terminals as well as consulting, training and maintenance.

TT&C IBMU
The TT&C provides uplink modulation with frequency sweeping for transponder uplink acquisition. The uplink supports TC uplink services for the PLOP and TC radiation. The TC data can be provided to the modem at Packet, CLTU or serial data/clock level depending on the customer’s system needs. The system is highly extensible and services such as AD/BD TC transmission and TC authentication can also be provided.
The downlink supports single or dual channel TM acquisition with or without baseband processing. Demodulated data can be output to the user as a demodulated serial stream (e.g. RS422 / LVDS) or processed within the modem with Frame acquisition, error correction coding (Viterbi, Reed-Solomon, etc) and the resulting data output to the user or further processed to TM Packet level.
The TT&C-IMBU is controlled and monitored via LAN or using the system’s local GUI. Test functions within the system include closed-loop testing at TM and TC level, BER testing, Doppler Simulation, etc.
The modem also includes Radiometric Processing (Ranging and Doppler Measurements). The modem supports the generation, reception, and processing of ranging signals using the ESA Tone, Code, and PN standards.
The system is highly flexible and allows C-STS to adapt the modem for specific customer requirements.
FPGA based signal processing provides real-time modulation, demodulation and radiometric processing in association with software that allows the system to be used locally via the system GUI or remotely via LAN.

TT&C Processor
This TTC Processor has been specifically designed for high-performance Deep Space satellite communications. The Digital Signal Processing, error correction techniques, data processing, and overall control and status mean that the system supports recover of extremely low SNR signals, highly accurate radiometric processing and the latest ESA coding and modulation techniques. The architecture is highly modular and designed to evolve as new techniques and schemes develop.
The TTC Processor is used for deep space spacecraft tracking with delta DOR and includes a Digital Tracking Receiver for antenna AutoTrack.

Optical Modem
The Optical Modem is designed to be multi-standard compatible and can be in-field reconfigured. The system is 19″ rack mountable and is designed for use both in optical communication ground stations and in test / lab environments. When used in a lab environment, the Optical Modem can be used in the validation process for free space optical communication space terminals.
The system is highly flexible and scalable. It can be configured with several optical Tx outputs with programmable skew and wavelengths, and an Rx channel for very low optical input powers. The system can be configured to work with external optical transmitters and receivers.
Celestia-STS offers the client a choice of fibre-in, fibre-out or copper-in, copper-our, or any combination of these. Every optical ground station is different, and our Optical Modem adapts to the needs of the ground station and client.
A raw data ingest configuration can be supplied where the hard-decision data bits from the receiver is saved directly to disc. This extremely powerful tool allows clients to examine and/or process the raw, unprocessed data bits, using Celestia-STS’ or the client’s custom processing. This transparent recording of data allows the client to use non-standard offline processing, without losing any of the data during a satellite pass.

Eagle-1 Optical Modem
The Modem can be fitted with an optimized optical receiver, and an Optical Transmitter Unit supporting multiple tunable seeds with programmable skew. All the data processing such as framing, encoding, decoding or automatic repeat requests (ARQ) etc., is performed inside the Modem.
The system is 19″ rack mountable and is designed for use both in optical communication ground stations and in test and laboratory environments.
The system is designed for high flexibility. It can be configured with several optical Tx outputs with programmable skew, and an Rx channel for very low optical input powers. The system can be configured to work with external optical transmitters and receivers.
Celestia-STS offers the client a choice of fibre-in, fibre-out or copper-in, copper-our, or any combination of these. Every optical ground station configuration is different, and the Celestia-STS EAGLE-1 Optical Modem adapts to the needs of the ground station and client.
The Data transferred between the EAGLE-1 QKD satellite, and the Celestia-STS EAGLE-1 Optical Modem is normally ingressed/ egressed on a dedicated high-speed LAN port. A raw data ingest configuration can be supplied where the hard-decision data bits from the receiver are saved directly to disc, before or after processing by the Modem. The data will in this scenario be routed through the optional Celestia-STS ingress platform.
This extremely powerful tool allows clients to examine and/ or post-process the raw, unprocessed data bits, using Celestia-STS’ or the client’s custom processing. This transparent recording of data allows the client to use non-standard offline processing, without losing any of the data during a satellite pass.
Explore Our Celestia Product Gallery
Welcome to the Celestia Product Gallery, where innovation meets reliability in the world of telecommunications. At CJ Communications Ltd., we pride ourselves on offering a comprehensive range of products and services that cater to your every communication need. This gallery presents a meticulously curated selection of our top-tier telecommunications equipment and advanced satellite communication systems. Here, you will find everything from state-of-the-art SatCom amplifiers to Cryogenic Amplifier LNAs designed to elevate your connectivity experience. With an emphasis on quality and performance, our offerings ensure that you can stay ahead in today’s fast-paced digital landscape. Explore the array of products that embody the Celestia standard of excellence and discover how CJ Communications Ltd. can enhance your operations.


















