Omnisat LT/LT+ Omnisat LT/LT+ MOD
Omnisat LT/LT+ Omnisat LT/LT+ MOD Demodulator and Modulator for Earth Observation and Science Model HW-02409
Ordering Information
Omnisat LT/LT+ It performs data demodulation and data acquisition in a cost-efficient single 1.5U unit. Up to 200 Msymb/s (325Msymb/s for LT+ version)
HW-02409 Omnisat LT Please contact Antwerp Space for the variant that suits your needs in terms of FEP functionality and bitrates. Antwerp Space N.V. • Berkenrodelei 33 • B-2660 Antwerpen • Belgium T +32 3 829 5050, F +32 3 829 5002 • [email protected] • www.antwerpspace.be antwerpspace
Omnisat LT/LT+ MOD It performs data modulation and data formatting in a cost-efficient single 1.5U unit. Up to 200 Msymb/s (325Msymb/s for LT+ version)
antwerpspace The Antwerp Space N.V. policy is one of continuous development and improvement, consequently the equipment may vary in detail from the description and specification in this publication. Doc. ref.: AS-SPE-160033-02-00
Omnisat LT/LT+
Omnisat LT/LT+ MOD
Demodulator version Technical Specification
Modulator version yyDigital
SRRC filter (roll-off 0.1 – 1), RC filter time: typically 250 ms yyAcquisition threshold ff BPSK Eb/No = 1 dB ff QPSK Es/No = 4 dB Adaptive equalizer to mitigate the effects of satellite transmitter imperfections and reception issues, in terms of compression, amplitude & phase slope and multipath effects BER counter 31 23 15 11 10 7 yyPN code 2 -1, 2 -1, 2 -1, 2 -1, 2 -1, 2 -1 Outputs yydigital data outputs (ECL) and corresponding clock outputs directly accessible from the back panel of the equipment yyReal Time Data Distribution over Ethernet yyStorage to file and retrieval via SCP yyOther outputs on request Front-End Processing (FEP) functionality: yyAutomatic ambiguity and data polarity resolving yyReal time ingest of data yyFrame synchronization, descrambling and CRC in real time for all supported bitrates yyReal time Reed-Solomon processing yySaving of ingested data to disk in real time before or after frame synchronization yyData distribution over the network using onboard LAN on standard file transfer protocols yyMeasurements of data/reception quality
antwerpspace
Technical Specification
yyAcquisition
ff
ff
ff ff ff
ff
ff
ff
ff
Data Ingest & front-end processors (CCSDS and DVB-S) Data storage 1 SSD with 120 GB Capacity. yyOther capacity optional (max 1TB) Real Time data distribution over Ethernet One Channel Numerous missions pre-stored with all parameters in XML files Operational reliability: yyFunctionality is in software and/or on reprogrammable digital hardware. yyNo tuning required Bit rates yyLT version: ff BPSK, GMSK: 200Mbit/s (200Msymb/s) ff (S/O/U/A)QPSK: 400Mbit/s (200Msymb/s) ff 8PSK: 600Mbit/s (200Msymb/s) yyLT+ version: ff BPSK, GMSK: 325Mbit/s (325Msymb/s) ff (S/O/U/A)QPSK: 650Mbit/s (325Msymb/s) ff 8PSK: 975Mbit/s (325Msymb/s) Decoding: yyDifferential decoding ff QPSK: modulo-4 Gray decoding, 8 different codes possible ff BPSK, SQPSK: modulo-2 decoding, i.e. NRZ-M or NRZ-S to NRZ-L conversion ff 8PSK: 8 different codes possible yyConvolutional decoding (K=7), rates 1/2, 2/3, 3/4, 5/6, 7/8. yyCCSDS compatible 4D TCM (Trellis Coded Modulation) yyReed-Solomon decoding (255,223), (255,239), (254,238) and shortened codes yyLDPC decoding 7/8 (LT+ version) IF: yyIF input frequency ff Standard: 720±190MHz or 1200±350MHz ff Optional: 375MHz (others on request). Limitations on bitrates may apply yyFrequency search range programmable, up to 1500kHz (step 1kHz) yyInput frequency change rate (Doppler rate) up to 35kHz/s yyInput signal level range (AGC): 40dB (-50 to -10dBm) 4 yyMax. bit clock frequency offset 10 x bit clock frequency yyPower unbalance I/Q up to 10 dB (UQPSK) yyBER Data processing up to (unformatted) level 0 yyBER degradation (QPSK):
Ordering Information
Omnisat LT/LT+ It performs data demodulation and data acquisition in a cost-efficient single 1.5U unit. Up to 200 Msymb/s (325Msymb/s for LT+ version)
HW-02409 Omnisat LT Please contact Antwerp Space for the variant that suits your needs in terms of FEP functionality and bitrates. Antwerp Space N.V. • Berkenrodelei 33 • B-2660 Antwerpen • Belgium T +32 3 829 5050, F +32 3 829 5002 • [email protected] • www.antwerpspace.be antwerpspace
Omnisat LT/LT+ MOD It performs data modulation and data formatting in a cost-efficient single 1.5U unit. Up to 200 Msymb/s (325Msymb/s for LT+ version)
antwerpspace The Antwerp Space N.V. policy is one of continuous development and improvement, consequently the equipment may vary in detail from the description and specification in this publication. Doc. ref.: AS-SPE-160033-02-00
Omnisat LT/LT+
Omnisat LT/LT+ MOD
Demodulator version Technical Specification
Modulator version yyDigital
SRRC filter (roll-off 0.1 – 1), RC filter time: typically 250 ms yyAcquisition threshold ff BPSK Eb/No = 1 dB ff QPSK Es/No = 4 dB Adaptive equalizer to mitigate the effects of satellite transmitter imperfections and reception issues, in terms of compression, amplitude & phase slope and multipath effects BER counter 31 23 15 11 10 7 yyPN code 2 -1, 2 -1, 2 -1, 2 -1, 2 -1, 2 -1 Outputs yydigital data outputs (ECL) and corresponding clock outputs directly accessible from the back panel of the equipment yyReal Time Data Distribution over Ethernet yyStorage to file and retrieval via SCP yyOther outputs on request Front-End Processing (FEP) functionality: yyAutomatic ambiguity and data polarity resolving yyReal time ingest of data yyFrame synchronization, descrambling and CRC in real time for all supported bitrates yyReal time Reed-Solomon processing yySaving of ingested data to disk in real time before or after frame synchronization yyData distribution over the network using onboard LAN on standard file transfer protocols yyMeasurements of data/reception quality
antwerpspace
Technical Specification
yyAcquisition
ff
ff
ff ff ff
ff
ff
ff
ff
Data Ingest & front-end processors (CCSDS and DVB-S) Data storage 1 SSD with 120 GB Capacity. yyOther capacity optional (max 1TB) Real Time data distribution over Ethernet One Channel Numerous missions pre-stored with all parameters in XML files Operational reliability: yyFunctionality is in software and/or on reprogrammable digital hardware. yyNo tuning required Bit rates yyLT version: ff BPSK, GMSK: 200Mbit/s (200Msymb/s) ff (S/O/U/A)QPSK: 400Mbit/s (200Msymb/s) ff 8PSK: 600Mbit/s (200Msymb/s) yyLT+ version: ff BPSK, GMSK: 325Mbit/s (325Msymb/s) ff (S/O/U/A)QPSK: 650Mbit/s (325Msymb/s) ff 8PSK: 975Mbit/s (325Msymb/s) Decoding: yyDifferential decoding ff QPSK: modulo-4 Gray decoding, 8 different codes possible ff BPSK, SQPSK: modulo-2 decoding, i.e. NRZ-M or NRZ-S to NRZ-L conversion ff 8PSK: 8 different codes possible yyConvolutional decoding (K=7), rates 1/2, 2/3, 3/4, 5/6, 7/8. yyCCSDS compatible 4D TCM (Trellis Coded Modulation) yyReed-Solomon decoding (255,223), (255,239), (254,238) and shortened codes yyLDPC decoding 7/8 (LT+ version) IF: yyIF input frequency ff Standard: 720±190MHz or 1200±350MHz ff Optional: 375MHz (others on request). Limitations on bitrates may apply yyFrequency search range programmable, up to 1500kHz (step 1kHz) yyInput frequency change rate (Doppler rate) up to 35kHz/s yyInput signal level range (AGC): 40dB (-50 to -10dBm) 4 yyMax. bit clock frequency offset 10 x bit clock frequency yyPower unbalance I/Q up to 10 dB (UQPSK) yyBER Data processing up to (unformatted) level 0 yyBER degradation (QPSK):
