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Global Area Reference System (GARS). Coordinate Systems Analysis Team (CSAT) Office of Military Support (OMS) - Lt Col Pete Renner -. GARS Overview. Introduction History Stakeholders Functional requirements Implementation issues Examples Questions. Purpose.

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global area reference system gars

Global Area Reference System(GARS)

  • Coordinate Systems Analysis Team (CSAT)
  • Office of Military Support (OMS)
  • - Lt Col Pete Renner -
gars overview
GARS Overview
  • Introduction
  • History
  • Stakeholders
  • Functional requirements
  • Implementation issues
  • Examples
  • Questions
purpose
Purpose
  • Propose a response to the Service Chiefs’ request for a “standardized” area reference system
  • SECDEF directed NGA to “Take the lead in developing a global reference system that meets the requirements of the combatant commanders and Services”
gars history
GARS History
  • Common Geographic Reference System (CGRS) developed for CAOC use in OIF
  • Dec 2003: ACC receives tasking to provide OPR to coordinate on Summit tasking form CSAF “Define the requirement and include CGRS in NIMA chart production”
  • Mar 2004: CGRS Conference hosted by the Air Land and Sea Application Center
  • Aug 2004: AWFC (98 RANW) CGRS Working Group
  • Sep 2004: HAF/XO tasked ACC/DO for best way to implement CGRS into daily ops
  • Nov 2004: Service Chiefs agree to implement existing ALSA model as training standard - request NGA develop global solution
  • Dec 2004: The Service Chief letter is signed and at the CJCS
  • Mar 2005: D/NGA receives tasking from SECDEF
  • Mar-Aug 2005: Three working groups
  • Nov-Dec 2005: Coordination of GARS proposal at AO & GO/FO levels via JS
  • Jan 2006: D/NGA sends “close-out” memo to SECDEF
gars stakeholders
GARS Stakeholders
  • Parties involved with local CGRS
    • ALSA & Air Warfare Center
  • Interested parties for global implementation
    • Service GI+S Staffs – N096, A2/X, Army G2 & USMC
    • Doctrine developers
      • ALSA – MTTP Developers
      • Joint doctrine developers
    • Air Warfare Center
    • COCOM GI+S officers
    • NGA OMS, OGM, P, & E?
global area reference system gars functional requirements
Global Area Reference System (GARS) - Functional Requirements -
  • Scalable down to a minimum 5 x 5 min area
  • Naming convention needs to be as intuitive as possible – entering argument either 1 deg or 30 min
  • Areas coincident with map sheet coverage – 30 x 30 and 15 x 15 min areas
  • Easy comparison between relative positions
  • Based on Geographics (Latitude and Longitude)
  • Must be on hard-copy charts – in some form
  • No inherent operational security measures
global area reference system functionality
Global Area Reference System - Functionality -
  • Based on the expanded ALSA Common Geographic Reference System (CGRS) model w/a few changes
  • Origin: 180 E/W & 90S
  • World sub-divided into 30 min cells
    • East / West * 1-720
    • North / South * AA-QZ
    • Read OVER - then UP
  • Quadrant Tiling
    • 30 minute cells divided into 15 minute quadrants
      • (numbered (1-4), left to right, top to bottom)
    • 15 minute quadrants divided into 5 minute keypads
      • (numbered (1-9), left to right, top to bottom)
  • 6 Digits (EX: 419 LP 2) defines 15 x 15 min area
slide8

GARS Solution – Global Overview

30 minute cell identifier

NOTE: 30 minute area divisions too small to show at this scale

slide9

GARS Solution – Global Overview

30 minute cell identifier

Example: 134LV

slide10

3

2

1

Each Cell Is

Sub-Divided Into Four

15 min X 15 min Quadrants

1:50,000 charts = 15 min x 15 min

Each Cell Is 30 min x 30 min

1:100,000 charts = 30 min x 30 min

6

5

4

8

9

7

Each Quadrant Can Be

Further Sub-divided Into Nine 5 min X 5 min

Keypads

2

1

3

4

GARS Solution – Global Overview

Cell to Quadrant to Keypad yields 5 min x 5 min cell;

takes advantage of existing 1:100K and 1:50K charts

AH

006AG

AG

AF

AE

AD

006AG3

AC

AB

006AG39

AA

Current 1:50,000 chart has symbology “+” to denote

5 x 5 keypads

002

001

003

004

005

006

007

008

009

Origin Point

180 E/W & 90S

gars implementation roadmap
GARS – Implementation Roadmap
  • Implementing GARS will require continued NGA-Service/COCOM interaction – work requirements
  • Updates to Joint doctrine & NGA publications
    • CJCSI 3900.01B: Position Reference Procedures
    • JP 2-03: JTTP for GI+S Support to Joint Operations
    • DMA TM 8358.1: Datums, Ellipsoids, Grids, and Grid Reference Systems
  • Standards activities
    • Inclusion in standard NGA production specifications
    • International standards – NATO STANAGs, etc
  • Implementation on soft-copy/hard-copy products
gars implementation roadmap12
GARS - Implementation Roadmap
  • Plan of Attack:
    • Develop implementation plan with Services/COCOMs
    • Infuse into doctrine/policy
    • Service printing capabilities meet short-term need with CSAT producing GIS layer available on NGA Gateway
    • Effort level can be managed on a priority basis using chart series and geographic coverage area as discriminators
    • Will not obsolete any current NGA chart products
    • Implement as stocks deplete / product editions incremented
    • Limited chart series – 1:50K / 1:100K / 1:250K? / 1:500K?
      • Chart body: graticule lines and text labels
      • Neat-line: text labels along the chart edge
      • Margin diagram of cells: depicting all cells for the chart
      • Explanatory reference guidance diagram
    • Phased implementation
gars implementation phase 1
GARS - Implementation Phase 1
  • Phase 1
    • “DEMO” GIS files currently available
      • Represents 15 min and 30 min areas
      • Hidden URL located at:
        • http://www.earth-info.nga.mil/GandG/coordsys/gars.html
    • Applications:
      • Overlay for soft-copy products
      • Within a GIS or mission planning system
gars implementation phase 114
GARS Implementation Phase 1
  • Phase 1 (cont)
    • GUI Lat/Long vs GARS Converter
gars implementation phase 2
GARS Implementation Phase 2
  • Full Implementation
    • TBD via upcoming implementation working group VTC with Service/COCOM SMEs
    • What needs to be added/changed to NGA products?
      • ONC - no change
      • TPC - no change
      • JOG - ????
      • TLM50 - ????
      • ICM - ????
gars implementation roadmap16
GARS Implementation Roadmap
  • Possible Map/Chart Changes
    • Part of main map/chart (extra lines)
    • ID’s listed along neat-line
    • Reference Guidance Diagram
    • Margin box showing specific ID’s
gars reference guidance diagram

GARS Reference Guidance

World divided into 30 min cells and further divisions can be 15 and 5 min

Origin of the reference system is 90S and 180E/W

Longitude will be 1 – 720 and Latitude will be AA – QZ

30 minute cell identifier: 345KW

15 minute cell: Use a quadrant over 30 minute cell

Numbered 1-4 Left to right, top to bottom

5 minute cell: Use a keypad over 15 minute cell

Numbered 1-9 Left to right, top to bottom

Sample Reference: 345KW37

30 minute identifier: 345KW

represents the longitude 30 minute division 345

represent the latitude 30 minute identifier KW

represent the quadrant of the 30 minute cell 3 (15 min identifier)

represent the keypad of the 15 minute cell 7 (5 min identifier)

GARS Reference Guidance Diagram

1

gars margin box with specific id s
GARS Margin Box with Specific ID’s

37°

JOG Example

(30 min GARS ID)

36°

102°

104°

103°

42°45’

TLM Example

(15 min GARS ID)

415MB4

416MB3

42°30’

27°18’

27°36’

gars implementation on tpc

345KY

346KY

30’ X 30’ cell

Cell Designators

345KX

346KX

345KW

346KW

GARS Implementation on TPC?
  • Designator for 30’x30’ cell
  • Margin diagram of cells
  • Explanatory diagram similar to WGRS diagram
gars implementation on jog
GARS Implementation on JOG?

30’ X 30’ cell

  • Designator for 15’x15’ cell
  • Designator for 30’x30’ cell
  • Margin diagram of cells

Cell Designators

156LN1

156LN2

345KX

346KX

156LN

37°

156LN4

156LN3

345KW

346KW

36°

102°

103°

104°

gars pocs kudos
GARS POCs & Kudos
  • NGA POCs:
    • Lt Col Pete Renner @ DSN 570-7292
    • Mr. Scott Spaunhorst @ DSN 693-4171
    • Mr. Phil Robertson @ DSN 575-4828
  • Special Recognition:
    • - COL Robert Green (USA)
    • - LtCol John Anderson (USMC)
    • - CDR Joe Yetter (USN)
    • - Lt Col Brian Dodson (USAF)
slide22

Know the Earth…Show the Way

QUESTIONS????????

NATIONAL GEOSPATIAL-INTELLIGENCE AGENCY

THANKS A MILLION!!!!!!!!