Satcom X-Band EPM Modem

S o f twa r e  D e f i n e d  R a d i o

Secure and robust communication links.

Strong resilience against jamming and interferences.

General

EPM waveform is the key feature to establish a secure and robust communication link, especially when your system is wide open to threats and unexpected interferences. SDR Modem implements frequency hopping EPM waveform which has strong resiliency against jamming. Frequency hopping in wide IF band is TRANSEC dependent and control messages in the network are NETSEC protected. DSP and FPGA based implementation of modem makes firmware upgrade easy. Operation of modem is easily managed, configured and monitored through a user friendly web interface. Up to 6 communication channels can be installed in a single modem box.

Interfaces

Modem has interfaces listed below per channel.

• E1 & RS449 data interfaces
• L band IF input & output
• Key Loading ( DS102 )
• Ethernet (Control and monitoring)
• ESM, EMCON and Emergency Zeroizing
• GPS (IRIGB 200-98)
• External Reference Clock interface

Control and Monitoring

User friendly web interface enables to set up and control all of the modem features as well as monitoring run time parameters of each communication unit. Other than hard control, soft control of ESM and EMCON is also available via the web interface. Time reference is accepted through GPS (automatically) or web interface (manually).

Network & System Integration

Centralized network management controlled by a controller modem enables the EPM featured mesh network, providing orthogonal frequency division multiplexed channels among communicating modems. Auto-synchronization feature allows modem to be synchronized with the network automatically. The modem can be used as a communication unit or network controller modem. A communication network can be established with multi transponders and multi coverage spots.

TRANSEC/NETSEC

NATO or any National TRANSEC/NETSEC Algorithm can be easily installed upon request. Each channel has its own embedded TRANSEC/NETSEC unit.

Mechanical

EPM Modem fits in an 8U Rack where up to 6 identical hot swappable communication units (channels) can be placed inside. Control of modem box physical features such as heat, power and
air flow is achieved through web interface.

Technical Specifications

• L Band IF Output (950-1450MHz)
• 1 K Hops/sec. Hopping Frequency and 500 MHz Hopping Bandwidth
• Orthogonal Frequency Hopping
• Multi channel - modular structure (up to 6 channels) which gives
• flexibility to operate in different networks using single modem
• Up to 2048 Kbps user data rate (nX64 Kbps) per channel
• Embedded TRANSEC and NETSEC Module,
• Multi transponder & multi coverage system
• Updatable Digital Modulation and Demodulation Feature
• Wide IF Input and Output Power Range (50dB)
• High Precision Internal 10 MHz Clock Reference (1x10-8 )
• 40 ºC / +85 ºC Operating temperature (Industrialrange)
• S-BPSK and QPSK demodulation capability
• 5 KHz Doppler resistance
• 5us time shift resistance
• 0,66 Spectral efficiency (User data rate/BW)
• Error correction blocks:
• Inner Encoding: Viterbi (1/2, 1/3, 1/4)
• Outer Encoding: Reed Solomon (216,196)
• Interleaving (Bit/Byte Forney)
• Non EPM waveform for effective space segment utilization.

Download Satcom X-Band EPM Modem Brochure