Image of Remos Space Systems AB - Expedite Software Modem on the satsearch marketplace

Key highlights

Expedite is a software modem for telemetry receive and telecommand transmit, delivered as a 4U rack-mount appliance with a built-in digitizer. It supports continuous and burst operating modes with symbol rates from 100 sps to 1 Msps standard, extendable to 25 Msps. Modulation support includes BPSK, QPSK, oQPSK, GMSK, FSK, AFSK, ASK, GFSK, and PCM/PM variants. Framing covers CCSDS CADU/CLTU, AX.25, and HDLC, with RS, convolutional, BCH, and LDPC forward error correction. The integrated mission scheduler supports pass planning up to 168 hours ahead using SGP4/SDP4 ephemeris propagation. Antenna control unit instrumentation is included, with support for SPID, Yaesu, Prosistel, M2, and RotCtrl rotors. Host integration is available via TCP/IP, REST, WebSocket, and ZeroMQ. Compatible satellite transceivers include GOMSpace AX100 and AX2150, Satlab SRS-3/4, AAC Clyde Space, EnduroSat UHF II, and GAUSS. Optional extensions include CCSDS Space Link Extension (SLE) and Cortex-like streaming. Expedite integrates natively with the Remos Umoja platform for multi-site ground station orchestration, scheduling, and GSaaS network management.

Applications

TT&C
Mission scheduling and pass planning
LEOP support
Ground station automation
GSaaS / remote ground station operations
Network-managed operations via Umoja ground station orchestration platform

Key features

Modem: Continuous and burst operating modes; supports TM receive and TC transmit
Symbol rate: 100 sps–1 Msps standard; up to 25 Msps optional extension
Frequency range: 70 MHz–2.5 GHz (VHF, UHF, S-band, low-rate X-band
Modulations: BPSK, QPSK, oQPSK, GMSK, FSK, AFSK, ASK, GFSK, PCM/PM, PCM/PSK/PM
Framing: CCSDS CADU/CLTU, AX.25, HDLC, AirMac, RAW
Forward error correction: CCSDS RS(255,223), RS(255,239), CC(7,1/2), concatenated, BCH, short LDPC
Line coding: NRZ-L/M/S, BP/Manchester-L/M/S
Scramblers: G3RUH, CCSDS
Telecommand procedures: PLOP-1, PLOP-2
Doppler compensation: Internal generation or external feed
External reference: 10 MHz and 1PPS; optional GPS reference
Mission scheduler: Integrated pass planning up to 168 h; SGP4/SDP4 ephemeris propagation
Antenna control: ACU instrumentation; supports SPID Rot2Prog, Yaesu, Prosistel, M2, RotCtrl
RF sequencing: Half-duplex relay switching via Sequencer
Satellite transceivers: GOMSpace AX100/AX2150, Satlab SRS-3/4, AAC Clyde Space, EnduroSat UHF II, GAUSS
Diagnostics: TTC Visualizer, spectrum analyzer, BER/FER monitoring, mission logs (telemetry, Doppler, antenna, IQ)
Operator interfaces: Local GUI, web application, remote desktop, integrated front panel
Host integration: REST API, TCP/IP, WebSocket, ZeroMQ
Optional extensions: CCSDS Space Link Extension (SLE); Cortex-like streaming

Customization

Antenna and sequencer control is customizable to support Remos or third-party ground stations.

Flight heritage

Expedite systems have been delivered to government and institutional customers in support of small-satellite TT&C operations. Remos ground station systems are deployed across 18 countries spanning Europe, the Americas, Asia, the Middle East, and Africa, serving university CubeSat programs, defense customers, and commercial smallsat operators.

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Last updated: 2026-07-07