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.