Facts - Products - aPPlications

datalink Products

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1. the scoPe

2. the Facts

3. the Products

4. the Mission

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high technology For the global satellite Market

the World oF tesat-sPacecoM

Our product offerings encompass highly reliable equipment as for ex-ample the travelling wave tube ampli-fiers, multiplexers, waveguide switches, and modulators, which along with com-plete systems are delivered to all lea-ding satellite manufacturers worldwide.

Therefore, we offer the complete communication technology necessary to disseminate television signals via satel-lite to each household on ground. More than half of all communication satellites

in orbit operate with Tesat equipment on board. The future global commu-nication infrastructure has to support security-related real time applications with ubiquitous coverage. This will only be viable with most advanced commu-nication systems operating in space.

Tesat has successfully developed the key element for this space infra-structure, the optical broadband Laser Communication Terminal (LCT). Using lasers, such terminals can transmit

data and imagery between satellites and from satellites to ground at un-precedented data rates. We at Tesat have demonstrated for the first time the operational capabilities of such broadband LCTs in space. given our competitive position in the commercial satellite market and our top quality standards, Tesat products are today the first choice for various satellite-based systems operated by several governments worldwide for security and defense related applications.

amplifierproducts

passive Micro-wave products

Communication Systems

Datalinkproducts

Laserproducts

partsagency

Over the course of five decades, Tesat-Spacecom has developed in-depth expertise in manufacturing of payload equip-ment for communication satellites and has established itself as a clear european market leader. On its 60,000m² premises in Backnang, germany, 1,200 employees develop, assemble, integrate, and test systems and equipment for telecom-munication via satellite. To date, more than 700 space projects have been completed. The accumulated in-orbit lifetime heritage exceeds 250 million hours.

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Our modulators feature highest data rates for the transmission of image and sensor data from satelli-tes to ground covering the established X-Band as well as the upcoming Ka-Band.

Our Telemetry, Tracking and Com-mand (TT&C) Transponders for S- and Ku-Band are based on a fully digital design, which provides a high degree of flexibility in terms of transmission

schemes and frequency agility. In addition to the standard schemes the transponders can operate in spread spectrum mode as well as in high data rate modes.

Our products make full use of the Tesat qualified and proven manu-facturing technologies and facilities, which process more than thousand sa-tellite equipment units per year. all our designs are suited for LeO, MeO and

geO applications, paving the way for multiple applications. For the design of the units, Tesat features a broad system knowledge based on simulation models that allows for analysis of the end-to-end transmission chain.

Our process engineering and de-sign advances are based on more than three decades of experience, which we pass on to our customers for their benefit.

key beneFits:

• excellent experience

• extensive engineering know-how

• Outstanding space heritage

• Highest data rates

• High flexibility

Why use tesat´s datalink Products?

Tesat-Spacecom´s Datalink products feature a unique combination of capabilities in the areas of RF technology, com-munication technology, digital signal processing and high speed digital technology. This strongly linked know-how in the different high speed digital technology areas allows us to design and develop highly advanced communication and data processing equipment for satellites.

1the scoPeWhy use tesat‘s datalink Products?

X-Band 8-pSK Modulator S-Band TT&C Transponder

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With the improved resolution of sensors and earth observation ins-truments, the amount of data to be transmitted from earth Observation or Meteorological Satellites is stea-dily increasing. To cope with this in-creasing data volume, the required data rates for the transmission to the ground need to be augmented. Tesat

offers a family of modulator products to satisfy these requirements. pro-ducts in X-Band (8 gHz range) and Ka-Band (26 gHz range) are availa-ble, which are all designed for LeO as well as MeO and geO applications with a 15 years lifetime. a new mo-dulator offering a channel data rate of up to 2 gbit/sec is currently under

qualification until 2017. The control of satellites is accomplished via the on-board TT&C transponder. There-fore, these units need to fulfill highest standards with respect to reliability and operational safety. The flexibility in the used transmission schemes and carrier frequencies is becoming im-portant. Tesat has developed a new generation of TT&C Transponders in S-Band and Ku-Band to satisfy these requirements.

aPPlications / key caPabilities

For more than 30 years Tesat has been working on digital communication for satellite applications, including studies and developments in the field of modulation, demodulation and on-board processing. Later the focus of activities was set on high data rate transmissions. The first flight project was the development, manufacturing and test of the modulators for the european envisat satellite. Since then more than 140 units were contracted to Tesat.

2 aPPlications / key caPabilities

the Facts

Tesat Downlink Subsystem inte-grated on Flight panel including

X-Band Modulators

Ku-Band TT&C Transponder architecture

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X-Band QpSK Ka-Band QpSK X-Band 8-pSK

Modulators For transMission oF highest data rates in sPace

The Tesat modulators are specifically designed to fulfill the increasing demands for high data rates required for earth observation, meteorological and data relay missions. Our modular designs allow simple adaptations to specific customer needs concerning e.g. data rate, transmission frequency, interfaces or implementation of forward error correction.

Modulator Type X-Band QPSK Ka-Band QPSK X-Band 8-PSK X-/Ka-Band Gigabit

Max. Data Rate 350 Mbit / sec 600 Mbit / sec 500 Mbit / secX: up to 1,200 Mbit / secKa: up to 2,000 Mbit / sec

Transmission Scheme

Hard Keyed QpSK Hard Keyed QpSK 4D-TCM 8-pSKQpSK, 8pSK, 16-apSK,

32-apSK, 64-apSK,supports VCM / aCM

Coding Scheme Differential encoding,others on request

Convolutional,others on request

RS (255/239) according to CCSDS

SCCC accordingto CCSDS

Design Status Fully qualified, FMs delivered Fully qualifiedeQM qualification

ongoing

Orbits LeO, MeO, geO, LX

Design Lifetime 15 years

Modulator - transMitter - receiver - tt&c transPonder

the Products3

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the next stePsFlexible tt&c transPonders For oPtiMuM satellite control

In the future required data rates are expected to increase further while the available frequency resources for data trans-missions remain limited. This calls for spectrum efficient waveforms, which is perfectly met with Tesat Datalink Products.

The Tesat TT&C Transponders are specifically designed for high flexibility with respect to operational needs. A fully digital implementation of demodulator and modulator provides various transmission schemes including standard mode, spread spectrum mode or direct modulation for high data rate applications. Due to its modularity, the design can be easily adapted to specific project requirements especially in terms of interfaces.

Frequency Band S-Band TT&C Transponder Ku-Band TT&C Transponder (RX and TX)

Transmission Schemes

Standard pCM / BpSK / pM, DSSS, BpSK / QpSK

pCM/BpSK/FM, pCM/BpSK/pM, others onrequest, High Rate QpSK Downlink

Design Status Fully qualified, FMs delivered Fully qualified

Orbits LeO, MeO, geO, LX

Design Lifetime 15 years

gigabit Modulator For high rate data doWnlink systeMs:To support future systems Tesat-Spacecom has started the development of a modulator with a couple of groundbrea-king properties:• Modulation up to 64-apSK• powerful SCCC encoding according to CCSDS• Designed for Ka- and X-Band for a symbol rate up to

500 MBaudThe design has been verified with an eM, an eQM of this new modulator will be available in 2017.

tt&c transPonders:The Tesat approach is to be able to offer a family of TT&C transponders for different application scenarios. Further to the available S-Band transponder, a Ku-Band transponder has been qualified with first FM deliveries planned for end 2016. Within the developments further operational modes will be implemented, which are contained within the TT&C standards, allowing systems to expand the functionality of the TT&C links. a Ka-Band Demonstrator incl. Spread Spec-trum technology has been validated.

beneFits oF tesat‘s ku-band ttc receiver and transMitter:

• Covers whole Ku-Band:» Uplink 12,500 - 14,500 MHz» Downlink 10,700 - 12,500 MHz

• In orbit frequency agility:» 770 MHz in uplink and 500 MHz in downlink» High output power (up to 5 W in S-Band, up to 2 W in Ku-Band)

• Flexibility in operation modes and data rates» Dual mode operation in uplink: Standard FM and pM demodulators » Dual mode operation in downlink: Standard BSpK/pM and QpSK» High Rate Downlink mode (up to 12 Mbit/sec)

• Compatible to major satellite platforms • Modular design

» Cost effective approach, low NRe due to frequency agility» Receiver & Transmitter prepared for use of spread spectrum schemes

gigabit Modulator Ku-Band TT&C TransmitterKu-Band TT&C ReceiverS-Band TT&C Transponder

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TWT

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TWT

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Diplexer

A3

A1

A2 ISOL2

ISOL3

ISOL1

Output Lowpass

f1

f2

TWTA 1 hot

TWTA 2 hot

TWTA 3 cold

f1/f2

Optional Feedback L oop

WGS 1

WGS 3

WGS 2

Optional Feedback L oop

Optional Feedback L oop

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Modulator 1, hot

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Data GigabitModulator

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Modulator 3, cold

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Next Generation Data Downlink enabling up to 2 x 2 Gbit/sec = 4 Gbit/sec ina 2-out-of-3 channel configuration in Ka-Band

High Order Modulation Schemes

QpSK

8-pS

K

16-a

pSKFuture high rate downlink systems

as well as TT&C transponders will benefit from flexible and modular designs currently being qualified at Tesat. State-of-the-art aSIC designs will provide for geO compatible ra-diation-hardened equipment.

High order modulation schemes realised in Variable/adaptive Co-ding and Modulation (VCM/aCM) will enable future missions with enhanced data throughput. Spread Spectrum techniques for TT&C will ease fre-quency coordination and are ideally suited for hosted payloads.

Based on the heritage of more than 40 flight programs, Tesat is a strong partner to provide our customers with state-of-the-art communication equipment for data download and satellite control. To be able to support our customers´ needs in the future we continuously analyse and forsee the needs of future missions and develop new product generations to fulfill these needs.

based on heritage – discover the Future

4 roadMaP oF PrograMs

the Mission

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Envisat

EDRS-AEDRS-C

Envisat

TerraSAR-X

SAR-Lupe 1-5

TerraSAR-X

SAR-Lupe 1-5

HELIOS 2

Metop 1-3

HELIOS 2

Metop 1-3

AEOLUS

THEOS

AEOLUS

THEOS

Kompsat 5

Cryosat 2

Kompsat 5

Cryosat 2

Tandem-X

COSMO FM4

Tandem-X

COSMO FM4 AstroterraAstroterra

SentinelSentinel

SEOSAR

PRISMA

SEOSAR

PRISMA

ENMAP

Earth Care

ENMAP

Earth Care

Egypt-Sat

Kazakhsat

Egypt-Sat

Kazakhsat

Rocsat 2

Radarsat 2

Rocsat 2

Radarsat 2

Cryosat 1

COSMO 1-3

Cryosat 1

COSMO 1-3

Sentinel 5P

ESA 8PSK Modulator

Sentinel 5P

ESA 8PSK Modulator

LUTCH-M

RCM

LUTCH-M

RCM OBZOR-OOBZOR-O EuclidEuclid

JamesWebbST

Alphasat

JamesWebbST

GalileoGalileo

Alphasat

MetOp-SG X-Band

MetOp-SG Ka-Band

MetOp-SG X-Band

MetOp-SG Ka-Band

SES-14

Kompsat-6

SES-14

Jason-CSJason-CS

Kompsat-6MTGMTG

EDRS-AEDRS-C

Ku-Band TTC Transponder

Ku-Band TTC Transponder

Ka-Band TTC Transponder

Ka-Band TTC Transponder

Ka-Band Modulator High Order Modulation Schemes

Ka-Band Modulator High Order Modulation Schemes

X-Band Modulator High Order Modulation Schemes

X-Band Modulator High Order Modulation Schemes

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Tesat-Spacecom gmbH & Co. Kggerberstraße 4971522 Backnang

germany+49 7191 930 - 0

info@tesat.dewww.tesat.de

© Copyright Tesat-Spacecom gmbH & Co. Kg 2016© pictures page 12 - 15: By courtesy of airbus Defence & Space, DLR and eSa.

produced in germany, May 2016all Rights Reserved.