The Largest Security-Cleared Career Network for Defense and Intelligence Jobs - JOIN NOW

Intelligence


Submarine Satellite Information Exchange Sub-System (SSIXS)

Primary Purpose Designed to complement terrestrial Very Low

Frequency/Low Frequency (VLF/LF), and Medium

Frequency/High Frequency (MF/HF) communication

links between shore-based submarine Broadcast

Control Authorities (BCAs) and submarines. Both

General Service (GENSER) and Special Intelligence

(SI) SSIXS are available.

Sub-Functions Sub-system of the Navy Ultra High Frequency

Satellite Communications System (UHF SATCOM).

Equipment Requirements Shore based transmission via AN/WSC-5(V) or

AN/WSC-3(v) UHF Transceiver, OM-43A/USC PSK

Modem, AN/FYK-33/FSQ SMART, AN/FYK-29 SSIXS

Processor, SB-4325/FSQ Patch Panel, RD-379B

(V)3/U Recorder-Reproducer, RO-600/U Teleprinter

and KG-84A COMSEC equipment.

Connectivity Requirements One 25kHz wideband channel in each ocean area is

allocated on FLTSATCOM (FSC) or UHF Follow-on

(UFO) satellites for SSIXS. A single SSIXS

network may have up to 120 submarine subscribers.

A single network may be established on more than

one satellite or two BCAs may share a single

satellite channel by offsetting the time of their

respective Group Broadcast transmissions.

Crypto Requirements KG-84A.

Normal Locations All SSN and SSBN submarines. All four BCA sites

and 2 ALT BCA sites:

COMSUBLANT Norfolk, Virginia.

COMSUBPAC Pearl Harbor, Hawaii.

COMSUBGRU SEVEN Yokosuka, Japan.

COMSUBGRU EIGHT Naples, Italy.

COMSUBGRU NINE Bangor, Washington (COMSUBPAC ALT

BCA).

COMSUBGRU TEN Kings Bay, Georgia (COMSUBLANT ALT

BCA).

Information Managed 4800 Baud Ship-to-Shore and Shore-to-Ship

communications.

Products Created Emergency Action Messages, Operational tasking,

Command and Control orders, Intelligence reports,

and all critical record message traffic.

Lead Service/Contractor United States Navy.

Current Fielding Status

Known Problems Low data rate (4800 BPS) severely limits

bandwidth to and from submarine. On broadcasts

simultaneously supported by VLF/LF assets, SSIXS

broadcast must mirror the VLF/LF broadcast.

Since the VLF/LF broadcast data rate is 50 Baud

and traffic lists (ZBOs) and new traffic are

loaded every 2 hours, the SSIXS broadcast is

limited to the traffic that can run at 50 Baud on

its VLF/LF counterpart. Additionally, each

Subscriber ID (SID) cannot exceed 30K of data.

Any data loaded in excess of 30K in any SID will

be truncated. These two limitations drive the

requirement for the BCA to carefully screen all

traffic placed on the submarine broadcast to

ensure that the most important traffic is

received onboard the submarine. The less important traffic is screened off the broadcast and is downloaded by the submarine after returning to port. System only effective if ships are within satellite footprint.  Currently no support exists above 65 deg latitude.  All satellites are in Geo-synchronous orbit above a specific ocean area.

DIICOE Compliance Rating N/A.

Point of Contact ENS Hainline. R.L., COMSUBLANT N65, Commercial

(757) 836-1081.

Updated by Capt Christopher P. Dever, USMC, CCSC-01.
 

BACK

 



NEWSLETTER
Join the GlobalSecurity.org mailing list