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Global Area Reference System (GARS)

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Presentation on theme: "Global Area Reference System (GARS)"— Presentation transcript:

1 Global Area Reference System (GARS)
Coordinate Systems Analysis Team (CSAT) Office of Military Support (OMS) - Lt Col Pete Renner -

2 GARS Overview Introduction History Stakeholders
Functional requirements Implementation issues Examples Questions

3 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”

4 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

5 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?

6 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

7 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 * 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

8 GARS Solution – Global Overview
30 minute cell identifier NOTE: 30 minute area divisions too small to show at this scale

9 GARS Solution – Global Overview
30 minute cell identifier Example: 134LV

10 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 Each Cell Is 30 min x 30 min 1:100,000 charts = 30 min x 30 min Each Cell Is Sub-Divided Into Four 15 min X 15 min Quadrants 1:50,000 charts = 15 min x 15 min AH 006 AG AG AF 3 1 2 4 AE AD 006AG3 Each Quadrant Can Be Further Sub-divided Into Nine 5 min X 5 min Keypads 1 2 3 4 5 6 7 8 9 This slide depicts perhaps the best global solution It uses a standard over-up cell address convention which brings you to a 30’x30’ cell That current number-character naming convention is already in use at the operational level at both CENTCOM and PACOM and has been in use for some time (hence the ALSA model) Each quadrant (15’x15’) subdivision is depicted in its entirety on a single 1:50,000 chart Easy to see keypad (5’x5’) sub-divisions because they already exist on 1:50,000 chart Using 5’x5’ as the smallest level of granularity makes it easy to use the 5’x5’ keypad as a building block for larger area definitions AC AB 006AG39 AA Current 1:50,000 chart has symbology “+” to denote 5 x 5 keypads 001 002 003 004 005 006 007 008 009 Origin Point 180 E/W & 90S

11 GARS – Implementation Roadmap
Implementing GARS will require continued NGA-Service/COCOM interaction – work requirements Updates to Joint doctrine & NGA publications CJCSI B: Position Reference Procedures JP 2-03: JTTP for GI+S Support to Joint Operations DMA TM : 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

12 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

13 GARS - Implementation Phase 1
“DEMO” GIS files currently available Represents 15 min and 30 min areas Hidden URL located at: Applications: Overlay for soft-copy products Within a GIS or mission planning system

14 GARS Implementation Phase 1
Phase 1 (cont) GUI Lat/Long vs GARS Converter

15 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 - ????

16 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

17 GARS Reference Guidance Diagram
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) 1 2 3 4 1 2 3 4 5 6 7 8 9 1

18 GARS Margin Box with Specific ID’s
37° 153LP 154LP 155LP 156LP 153LN 154LN 155LN 156LN JOG Example (30 min GARS ID) 36° 104° 103° 102° 42°45’ TLM Example (15 min GARS ID) 415MB4 416MB3 42°30’ 27°18’ 27°36’

19 GARS Implementation on TPC?
Designator for 30’x30’ cell Margin diagram of cells Explanatory diagram similar to WGRS diagram Cell Designators 30’ X 30’ cell 345KY 346KY 345KX 346KX 345KW 346KW

20 GARS Implementation on JOG?
30’ X 30’ cell Designator for 15’x15’ cell Designator for 30’x30’ cell Margin diagram of cells 156LN1 Cell Designators 156LN2 345KX 156LN 346KX 37° 153LP 154LP 155LP 156LP 153LN 154LN 155LN 156LN 156LN3 156LN4 345KW 346KW 36° 104° 103° 102°


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