# Presentation: 029910

## Nationwide Differential Global Positioning System 

***Nationwide Differential Global Positioning System ***
***(NDGPS)***

**Richard Shamberger**
**Federal Railroad Administration**

**CGSIC**
**September 10, 2001**

## Topics

**Appropriations History**
**Railroad Requirement**
**Coverage Today and This Year**
**Resources Needed **

## APPROPRIATIONS HISTORY

**APPROPRIATIONS HISTORY**

- FY1998 -- $2.4M (in Coast Guard appropriation)
- FY1999 -- 	$7.2M requested in FRA budget
- 		$5.5M (in Coast Guard appropriation)
- FY2000 -- 	$10.4M requested in FRA budget
- 		$5.0M (in FHWA appropriation)
- FY2001 --	$18.7M requested in FRA budget
- 		$6.0M (in FAA appropriation)

## APPROPRIATIONS HISTORY

**APPROPRIATIONS HISTORY**
- (continued)

- FY2002 -- $20.5M requested in FRA budget
- 		$6.0M (in FAA appropriation)
- FY2003 -- $58.0M needed to complete double 		coverage of CONUS and single  			coverage of Alaska

## Major Railroad Lines

## Nationwide DGPS

- <date/time>

** **

**  ****Grady**

**  **

**   **

**   ****Hackleburg**

**   ****Bobo**

**   **

**  **

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**Oberlin**

** ****Topeka**

** **

** ****Onondaga**

** ****Medford**

** ****Edinburg**

** **

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** ****Spokane**

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** ****Austin**

** **

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** ****Bakersfield**

** ****Essex**

** ****Kirtland**

** ****Summerfield**

** **

** ****Pueblo**

**Nationwide DGPS**

**  ****Nationwide**** Sites**
**  ****Maritime Sites**
**    ****Green - Operating **
**    ****Red - Planned**

** ****Whidbey Is**

** ****Robinson Pt**

** **

**Fort Stevens**

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**Cape ****Mendocino**

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**Point Blunt**

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**Pigeon Point**

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**Vandenberg**

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**Point Loma**

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**Aransas Pass**

**Galveston**

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**English Turn**

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**Mobile****Point**

**Egmont Key**

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**Key West**

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**Miami**

**Cape Canaveral**

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**New Bern**

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**Cape Henlopen**

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**Sandy Hook**

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**Moriches**

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**Chatham**

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**Portsmouth**

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**Brunswick**

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**Millers Ferry**

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**Vicksburg**

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**Memphis**

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**Sallisaw**

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**Kansas****City**

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**St Louis**

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**Rock****Island**

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**St. Paul**

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**Wisconsin****     Point**

**Upper****Keweenaw**

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** **

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**Pickford**

**Cheboygan**

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**Sturgeon Bay**

** **

**Detroit**

** **

**Saginaw****Bay**

**Milwaukee**

** **

**Youngstown**

**Tucson**

**Munday**

**Jackson**

**Myton**

**El Paso**

**Gooding**

**Dandridge**

**Cincinnati**

**Monterey**

**Langtry**

**Rawlins**

**Kanab**

**Hagerstown**

**Martinsville**

**Middlebury**

** ****Jack Creek**

**Odessa**

**Greensboro**

** **

**Omaha**

**Brainerd**

**Hannibal **

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**Louisville**

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** **

**Feb/2001**

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**Acushnet**

**Elmira**

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**  **

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**Annapolis**

** ****Canton **

**Iowa City**

**Pacific Junction**

** **

** **

** **

**Ledyard**

** **

**Lincoln**

** **

** **

** ****Wenatchee**

**Whitney**

**Clark**

**Chico**

**Penobscot**

**Charleston**

**Savannah**

** **

** **

** **

** **

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**Hartsville**

** **

**Reedy Point**

** **

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**Driver**

**Patten**

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**Isabela**

** **

**Macon**

** **

**Flagstaff**

**Billings**

** **

**Hudson **
**     ****Falls**

** **

** **

** **

** **

**Kokole Point**

**Pahoa**

**Upolu Point**

- Hawaii

**Great Falls**

**Medora**

**Kensington**

**Fayetteville**

**Cape Hinchinbrook**

**Delta Junction**

**Biorka**

**Annette Island**

**Barrow**

**Prudhoe Bay**

**Klamath Falls**

**Hawk run**

**Gustavus**

**Bettles**

**Ft. Yukon**

**McGrath**

**Kenai**

**Cold Bay**

**Galena**

**Nome**

**Seneca**

**Hooper Bay**

**Bethel**

**Dillingham**

**Glenallen**

**Clear AFB**

**Trapper Creek**

**Potato Point**

**Kodiak**

**Kotzebue**

**Appleton**

**Polson**

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**Level Island**

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**Notes:**
Phase II will add enough sites to provide double coverage nationwide.  Double coverage greatly improves the availability of the DGPS signal.  Single coverage gives an availability of 99.7 percent while double coverage provides 99.999 percent availability.  The double coverage also improves the position accuracy and robustness of the signal.

## NDGPS Coverage – Today

- Date: 2/28/01

## CONUS Coverage – Dec 2001

## Resources Needed

**$  8 M Annual Operating & Maintenance Expenses**
**	****(for 86 sites) **
**FY 2002 -- $6.0 million Appropriated (includes $3.2M O&M)**
- 	-- 25 sites completed by end of calendar year 2001
**Contributions from non-DOT Agencies**
- -- US Air Force GWEN sites, US Army Corps of Engineers, States, Bureau of Land Management, Tennessee Valley Authority
- -- Property, Equipment , Environmental Checklists

**Resources Needed**