synthesys...16 29/09/2015 f12803 slide no.1 synthesys st. hilda’s business centre the ropery...

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Slide No.1 29/09/2015 F12803

SyntheSys St. Hilda’s Business Centre The Ropery Whitby North Yorkshire YO22 4ET tel: +44 (0)1947 821464 fax: +44 (0)1947 603301 email: [email protected] web: www.synthesys.co.uk

mailto:[email protected]

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Slide No.2 29/09/2015 F12803

Welcome to IDLS 2015

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Slide No.3 29/09/2015 F12803

Introduction to JTIDS/MIDS Link 16

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Slide No.4 29/09/2015 F12803

• Paul Czajkowski (Ski)

• Training Consultant & Systems Engineer

• Retired Royal Air Force 22 years

• Involved in TDLs all my career

• Conduct TDL training all over the world

Introduction

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Slide No.5 29/09/2015 F12803

• Main Features and Supporting Documentation

• JTIDS/MIDS Nations & Platforms

• Basic Architecture

• Initialisation and Synchronising to a Network

• Basic exchange of J-Series Messages

Scope

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Slide No.6 29/09/2015 F12803

• Joint Tactical Information Distribution System (JTIDS)

• Term to describe software/hardware and R/F equipment on first generation terminals

• Multi Functional Information Distribution System (MIDS)

• Term to describe same requirement on second generation terminals

• JTIDS/MIDS is the Bearer and Link 16 is the language

JTIDS/MIDS Link 16 Terminology

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Slide No.7 29/09/2015 F12803

• MIDS uses J-Series messages

• MIDS/Link 16 supports approximately 525,000 objects

• MIDS uses UHF

• MIDS utilises 51 discrete frequencies

• MIDS IU is known as a JTIDS Unit (JU)

• C2 or NonC2

JTIDS/MIDS Link 16 Terminology

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Slide No.8 29/09/2015 F12803

JTIDS/MIDS Main Features

JTIDS/MIDS Link 16

Message Security (MSEC)

Transmission Security (TSEC)

Increased Granularity (WGS-84)

Data exchange in more environments

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Slide No.9 29/09/2015 F12803

• Technical specification of TDLs and procedures for their operation are defined by both national and NATO documents

• Standardised NATO Agreement (STANAG)

• ‘NATO Standards’

• Most TDLs are initially designed to US requirements

• US Military Standards (MIL-STDs)

Documentation

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Slide No.10 29/09/2015 F12803

Documentation

Message Standard

MIL-STD -6016

STANAG 5516

Terminal

STANAG 4175

MIDS SSS

Operator Procedures

JMTOP

ADatP-33

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Slide No.11 29/09/2015 F12803

• There are approximately 43 Nations and it is used on a variety of platforms

• Some platforms are Multi-TDL equipped

• Endless issues/problems of interoperability

Nations & Platforms

I can do Link 1, 11A/B and 16

I can only do Link 22

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Slide No.12 29/09/2015 F12803

• JTIDS/MIDS uses Time Division Multiple Access (TDMA)

• In a JTIDS/MIDS network each JTIDS Unit (JU) is allocated a portion of time known as a Time Slot (TS)

• Each TS is 7.8125ms in duration and there are 1536 TS available

• Which adds up to a 12 second repeating cycle known as a frame

Basic Architecture

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Slide No.13 29/09/2015 F12803

• Each 24 hour day is divided in to 112.5 epochs

• Each epoch has 64 frames

• Each frame has 1536 Time Slots

• Terminal simply follows the same 12 second cycle

TDMA

24

HOURS

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Slide No.14 29/09/2015 F12803

• Network can support up to 128 nets

• Each net number supports a different Frequency Hopping Pattern (FHP) controlled by TSEC

• Each JU is allocated TS on a net number to either Tx, Rx or Relay

• But a JU can only operate on one net in any given TS

Basic Architecture

Net 127

Net 0

Net 1

Net 2

Net 3

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Slide No.15 29/09/2015 F12803

• When a JU wishes to join a network it requires a load file

• To create a load file specific parameters are needed

• Mission Specific Parameters (MSP) • Each JU is allocated an address and maybe a track block

• Network Specific Parameters (NSP) • Time Slots and net number(s) to operate on

Initialising a Terminal

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Slide No.16 29/09/2015 F12803

• Platform Specific Parameters (PSP) • Factors that are particular to a platform e.g. ‘cable delays’

• PSP are normally stored within • Initialisation Data Preparation Facility (IDPF) or a Mission

Support System (MSS)

• An operator will load both the NSP and MSP on to the IDPF/MSS and create a load file

• Then transfer the load file to the terminal/host


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Slide No.17 29/09/2015 F12803


Network Specific Parameters (NSP) Network Design

Platform Specific Parameters (PSP)

Cable lengths

Mission Specific

Parameters (MSP)

OPTASK Link Track Block

JU MIDS Duties

Initialisation Data

Preparation Facility (IDPF) NSP/MSP/PSP all create the

Load File

HOST

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Slide No.18 29/09/2015 F12803

• For a terminal to successfully synchronise to an established network it requires • Correct Crypto

• Correct Time

• Line of Sight

• Crypto is supplied prior to operations but correct system time needs to be found

• System time is supplied by Network Time Reference (NTR) which defines the beginning of each frame

Synchronising to a Network

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Slide No.19 29/09/2015 F12803

• Synchronisation is when a joining unit acquires and then maintains system time either actively or passively

• Automatic process

• Achieved in a two part process • First part is to achieve Coarse synchronisation

• Second part is to achieve Fine synchronisation


I would like to join the network

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Slide No.20 29/09/2015 F12803

• To achieve Coarse synchronisation, a joining unit must receive an error free J0.0 Initial Entry Message (IEM)


NTR

I estimate system time

I Tx IEM at the start of the frame

IEM

Great I found it

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Slide No.21 29/09/2015 F12803

• To achieve Fine synchronisation a joining unit then exchanges several Round Trip Timing (RTT) messages

• Allowing a joining unit to refine its clock

• After that a terminal continues to exchange RTT messages to support a value known as Time Quality


Fine synch Now I can transmit

messages

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Slide No.22 29/09/2015 F12803

• Various J-Series messages exist to support tactical data exchange and commands

• J-Series messages are transmitted and/or received dependent upon the type of platform

• J-Series messages are ‘grouped’ for transmission to a Network Participation Group (NPG)

• Currently 31 are defined for use by their function

Exchanging J-Series Messages

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Slide No.23 29/09/2015 F12803

• Time Slots are allocated to an NPG dependent upon the requirements of the network

• All platforms will transmit and receive NPG 6 PPLI messages


NPG 2 & 3 Round Trip Timing

NPG 4 Network Management

NPG 5 & 6 Precise Participant Location & Identification (PPLI)

NPG 7 Surveillance

NPG 8 Mission Management & Weapons Coordination

NPG 9 Control

NPG 10 Electronic Warfare

NPG 12 & 13 Voice

NPG 19 & 20 Fighter-to-Fighter A&B

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Slide No.24 29/09/2015 F12803


I Tx a J2.5 Land Point PPLI

I Tx a J2.3 Surface PPLI

We each Tx a J2.2 Air PPLI

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Slide No.25 29/09/2015 F12803

• Generally the largest exchange of data within a network is for Surveillance

• C2 units are defined as those that Tx surveillance data

• All units need to receive the surveillance data to maintain situational awareness

• There are 21 surveillance messages primarily supporting the transmission of track data and track management


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Slide No.26 29/09/2015 F12803


I detect an air track and Tx a J3.2 Air Track message

Thanks for the warning

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Slide No.27 29/09/2015 F12803


It is in the network lets

correlate

I detect an air track and Tx a J12.6 Target Sorting Message

It is in the network lets

correlate

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Slide No.28 29/09/2015 F12803

Summary

JTIDS/MIDS is the bearer and Link 16 is the language

Operates over 51 frequencies and 128 nets

Primary documents are MIL-STD-6016 & STANAG 5516

JTIDS/MIDS operates on a 12 second repeating cycle

A JU can only operate on one net in any given TS

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Slide No.29 29/09/2015 F12803

Summary

Terminal needs MSP/PSP/NSP to create a load file

Terminal requires Time/LOS/Crypto to synchronise

Synchronisation is a two part process – Coarse & Fine

Lots of J-Series message exist to support the transmission of tactical data and commands

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Slide No.30 29/09/2015 F12803

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Slide No.31 29/09/2015 F12803

Mr Paul Czajkowski [email protected]

Tel: +44 (0) 1947 821464 Mob: +44 (0)7507866253 www.synthesys.co.uk

synthesys...16 29/09/2015 f12803 slide no.1 synthesys st. hilda’s business centre the ropery...

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