Cahon Systems Inc.
Broadband Satellite Terminal (BST)
Cahon Systems
BST (Broadband Satellite Terminal) Network Diagram
Satellite
Satellite
IP Connection to
Inmarsat Network
(Double Hop)
May Be Same Satellite & Gateway
INMARSAT
GLOBAL IP
NETWORK
Gateway
E/N
E/N
E/N
E/N
Gnd Test
E/N
IP Video
ynamic
Direct
Gateway
IP
Static IP
Static IP
Static/D
IP Connection to
Inmarsat Network
MILNET, Internet,
VPN, T1/E1, VSAT
IP Connection to
Inmarsat Network
(Single Hop)
E/N
E/N
Gnd Test
E/N
IP Video
E/N
Serial
Serial
Serial
Serial
Voice
Voice
Voice
Voice
BST 210
BST 110
Ground
Aircraft
2
Cahon Systems
BST System Capabilities
• Inmarsat Compatible
– SwiftBroadband (Airborne version of BGAN)
• Voice
–
–
–
–
2 VoIP channels, wired telephone network toll quality
Push-to-talk supervision transmitted in-band
Full Duplex capable, each direction independent
Uses bandwidth only when talking (background)
• Video or Other UDP Data
– 10/100Base-T (UDP)
– 32 kbps, 64 Kbps, 128 Kbps, 256 Kbps fixed streaming or
variable background (selectable)
• Two Async Serial Data Channels
– Full Duplex, optional hardware flow control
– Telemetry & Command (T&C), 38.4 Kbps (default rate)
– Payload Data, up to 115.2 Kbps
3
Cahon Systems
BST Security & Redundancy
• Inmarsat Encryption
– Satellite air interface segment commercially
encrypted by the Inmarsat network
– NSA Type-1 encryption on satellite command links
• BST End to End Encryption
– AES 256 shared key
– User selectable for each interface individually
• User Encrypted Payloads
– BST delivers externally encrypted payloads
transparently
• Redundant Connection, Ground Station to Inmarsat
– Direct T1/E1, VPN, Mil Net, VSAT, Internet – Single Hop
– Satellite (BGAN) backup – Double Hop
4
Cahon Systems
BST Interfaces
• Toll Quality VoIP Audio, 2 Channels
–
–
–
–
–
Transformer Coupled, 150 Ohm or 600 Ohm balanced
Input level – 1Vpp to 50Vp-p (ARC-210 compatible)
Output level – 1Vpp to 3Vp-p
28V Logic ground for push-to-talk (PTT) in and out
Full Duplex capable, each direction independent
• 10/100Base-T Ethernet (UDP)
– User data or video, streaming or background
• RS-422 Async Serial Data
– Full duplex asynchronous data, up to 115.2 Kbps
(w/optional flow control)
• RS-232/422 Async Serial Data
– EIA-232/422, selectable by wiring
– Full duplex asynchronous data, up to 115.2 Kbps
(w/optional flow control)
• RS-422 Async Serial Control (Terminal Administration)
– Configuration and status monitoring of terminal, up to
115.2 Kbps (w/optional flow control).
5
Cahon Systems
BST SWaP & Temperature
• SWaP (Size, Weight and Power)
– Airborne Equipment
• Chassis Size < 0.6 cu ft (10” x 18” x 5”), excluding connectors
• System Weight ≤ 30 lbs, including HLD & antenna
• System Power ≤ 300 W, including HLD & antenna
– Ground Equipment
• Chassis Size: 2U (3.5” high), 19” rack mount
• Chassis Weight ≤ 20 lbs, excluding radome (< 50 lbs)
• System Power ≤ 400W, including radome
• Temperature
– Airborne Equipment
• Antenna (-73° C (start-up) to +49° C (start-up))
• Chassis (-40° C (start-up) to +70° C (start-up))
– Ground Equipment
• Antenna (-32° C (start-up) to +49° C (start-up))
• Chassis (-32° C (start-up) to +35° C (start-up))
6
Cahon Systems
BST Functional Description (UAS Configuration)
• Bandwidth Capability
–
432kbps maximum
• Background IP (shared bandwidth)
• Streaming IP (fixed 32 Kbps, 64 Kbps, 128 Kbps or 256 Kbps rates)
• Video (shares bandwidth with payload data)
– UDP on 10/100Base-T Ethernet
– >200 Kbps background, or streaming
38.4 Kbps
INS/GPS Data
(Airborne Only)
• Voice
–
–
–
–
–
2 VoIP channels
Full duplex capable
Wired telephone voice quality
Push-to-talk
ARC-210 style interfaces
RF
Payload Data
115.2 Kbps
EIA422
EIA422
Separate System
Admin, 38.4 Kbps
(Not Used)
EIA422
UHF/VHF
Voice
Radio #1
{
– 115.2 Kbps async
– 10/100Base-T Ethernet (UDP)
– Full Duplex
Antenna
Controller
EIA422/232
w/flow control
T & C Data/System
Admin, 38.4 Kbps
• Payload Data
ARINC 429
(Airborne Only)
Analog
PTT (Logic)
HLD
Application
Specific
Interface
Cards
&
AES-256
Encryption
Transceiver
MODEM
UHF/VHF
Voice
Radio #2
• UA Control/System Administration
{
Video (UDP)
– Telemetry & Command (T&C) Data
– Also includes BST admin
– Combined 38.4 Kbps (default rate)
Analog
PTT (Logic)
Ethernet
Ethernet
Alternate Network Connection /
Local Bypass
• Encryption
Identical Architecture,
Airborne & Ground
– Commercial AES 256 bit encryption
7
Cahon Systems
Airborne SBU, HLD & Antenna Specifications
• COTS LRU SWaP
– SwiftBroadband Unit (SBU)
• 12.62”(L) X 7.62”(W) X 2.25”(H)
• 5.5 lbs
• 28VDC, ~100W
– High Power/Low Noise Amplifiers & Diplexer (HLD)
• 9”(L) X 7.9”(W) X 2”(H)
• 5.9 lbs
• Powered from SBU
– High Gain Antenna (HGA-6000)
• 10”(L) X 10”(W) X 9.7”(H)
• 4.3 lbs
• Powered from SBU
• Operating Temperature Specification
– SBU & HLD
• -25° C to +55° C (+70 ° C for 30 minutes)
– HGA-6000 Antenna
• -65° C to +70° C (Tested to -73 ° C)
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Cahon Systems
Explorer 700 (Terrestrial Terminal) Specifications
• COTS LRU SWaP
– Transceiver
• 11”(L) X 8.9”(W) X 1.6”(H)
• 3.3 lbs
– Antenna
Transceiver/Modem
• 11.7”(L) X 15.7”(W) X 2”(H)
• 3.7 lbs
– 100VAC to 240VAC or battery
– 65W
• Temperature Specification
– Operating Temperature
• -25 ° C to +55 ° C
9
Detachable antenna
Cahon Systems
BST Airborne Terminal
10
Cahon Systems
Amplifiers/Diplexer (HLD) & HGA-6000 Antenna
11
Cahon Systems
Cahon Systems Inc. BST Ground Terminal & Antenna
12
Cahon Systems
HGA-6000 Integration
13
Cahon Systems
BST Airborne Terminal Integration
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Cahon Systems