THE 2nd SPACE OPERATIONS SQUADRON Capt Heather Eastlack

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THE 2nd SPACE OPERATIONS SQUADRONCapt Heather
Eastlack
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NANUS
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Introduction

• 2 SOPS NANU overview
• History
• Description
• Format Samples
• FCSTMX changes

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NANU Description

• 2 SOPS generates a Notice Advisory to NAVSTAR
  Users (NANU) message to inform military and civil
  users of events affecting GPS constellation
  navigation payload status

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NANU History

• Civil community through on site support
  personnel convince GPS operational support
  personnel that outage notices need to be
  published in 1984
• GPS operational support personnel collaborate
  and code NANU outage distribution software in
  1986
• United States Coast Guard (USCG) receives NANUs
  and upgrades USCG radio broadcasts to include
  NANUs in 1988

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NANU History

• Requirement established to report GPS
  degradation below a certain level in 1989.
• Worldwide navigation users (civilian and
  military) increased to infinite numbers as
  utility is established 1988-Present

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NANU History

• MOA established between Department of
  Transportation (DOT) and Department of Defense
  (DOD) in Jan 1993
• Annex 1 DOT Representation at the GPS JPO and
  AFSPACECOM added in Jun 1993
• Annex 2 Second Coded Civil GPS Signal added in
  Jul 1997
• Annex 3 Information Coordination and
  Dissemination added in Jul 1999
• Annex 4 Implementing Unique Civil Requirements
  added in Aug 2000

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NANU History

• The legacy GPS User Support System (GUSS) was
  PC-based and developed as an offline tool to
  automate NANU generation in 1995
• Notified worldwide users of satellite outages,
  return to service, and general GPS information
• MOA established between United States Air Force
  Space Command (AFSPACECOM) and USCG in Feb 1996

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NANU History

• Intranet-based GUSS was developed to provide
  enhanced automation and be compliant with LAN
  policies regarding software/hardware requirements
• VVA in 2001
• Related MCB occurred in Jan 2002
• Awaiting 1067 validation for AEP version of GUSS
• Related MCB occurred in Jan 2002

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NANU Types

• Scheduled outages
• Unscheduled outages
• General
• Classified
• Others

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NANU Types

• Scheduled outages
• FCSTDV
• FCSTMX
• FCSTCANC
• FCSTRESCD
• FCSTEXTD
• FCSTSUMM

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NANU Samples
Forecast Delta V
NOTICE ADVISORY TO NAVSTAR USERS (NANU)
YYYYNNN SUBJ SVNxx (PRNXX) FORECAST OUTAGE JDAY
JJJ/HHMM - JDAY JJJ/HHMM 1. NANU TYPE FCSTDV
NANU NUMBER YYYYNNN NANU DTG DDHHMMZ MMM
YYYY REFERENCE NANU N/A REF NANU DTG
N/A SVN XX PRN XX START JDAY JJJ
START TIME ZULU HHMM START CALENDAR
DATE DD MMM YYYY STOP JDAY JJJ STOP
TIME ZULU HHMM STOP CALENDAR DATE DD MMM
YYYY 2. CONDITION GPS SATELLITE SVNXX (PRNXX)
WILL BE UNUSABLE ON JDAY JJJ (DD MMM YYYY)
BEGINNING HHMM ZULU UNTIL JDAY JJJ (DD MMM YYYY)
ENDING HHMM ZULU. 3. POC CIVILIAN - NAVCEN AT
[phone], HTTP//WWW.NAVCEN.USCG.GOV
MILITARY - GPS Support Center, DSN 560-2541,
COMM 719-567-2541, GPS_at_SCHRIEVER.AF.MIL,
HTTP//WWW.SCHRIEVER.AF.MIL/GPS
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NANU Samples
Forecast Delta V
NOTICE ADVISORY TO NAVSTAR USERS (NANU)
YYYYNNN SUBJ SVNxx (PRNXX) FORECAST OUTAGE JDAY
JJJ/HHMM - JDAY JJJ/HHMM 1. NANU TYPE FCSTDV
NANU NUMBER YYYYNNN NANU DTG DDHHMMZ MMM
YYYY REFERENCE NANU N/A REF NANU DTG
N/A SVN XX PRN XX START JDAY JJJ
START TIME ZULU HHMM START CALENDAR
DATE DD MMM YYYY STOP JDAY JJJ STOP
TIME ZULU HHMM STOP CALENDAR DATE DD MMM
YYYY 2. CONDITION GPS SATELLITE SVNXX (PRNXX)
WILL BE UNUSABLE ON JDAY JJJ (DD MMM YYYY)
BEGINNING HHMM ZULU UNTIL JDAY JJJ (DD MMM YYYY)
ENDING HHMM ZULU. 3. POC CIVILIAN - NAVCEN AT
[phone], HTTP//WWW.NAVCEN.USCG.GOV
MILITARY - GPS Support Center, DSN 560-2541,
COMM 719-567-2541, GPS_at_SCHRIEVER.AF.MIL,
HTTP//WWW.SCHRIEVER.AF.MIL/GPS
NANU Description
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NANU Samples
Forecast Delta V
NOTICE ADVISORY TO NAVSTAR USERS (NANU)
YYYYNNN SUBJ SVNxx (PRNXX) FORECAST OUTAGE JDAY
JJJ/HHMM - JDAY JJJ/HHMM 1. NANU TYPE FCSTDV
NANU NUMBER YYYYNNN NANU DTG DDHHMMZ MMM
YYYY REFERENCE NANU N/A REF NANU DTG
N/A SVN XX PRN XX START JDAY JJJ
START TIME ZULU HHMM START CALENDAR
DATE DD MMM YYYY STOP JDAY JJJ STOP
TIME ZULU HHMM STOP CALENDAR DATE DD MMM
YYYY 2. CONDITION GPS SATELLITE SVNXX (PRNXX)
WILL BE UNUSABLE ON JDAY JJJ (DD MMM YYYY)
BEGINNING HHMM ZULU UNTIL JDAY JJJ (DD MMM YYYY)
ENDING HHMM ZULU. 3. POC CIVILIAN - NAVCEN AT
[phone], HTTP//WWW.NAVCEN.USCG.GOV
MILITARY - GPS Support Center, DSN 560-2541,
COMM 719-567-2541, GPS_at_SCHRIEVER.AF.MIL,
HTTP//WWW.SCHRIEVER.AF.MIL/GPS
Reference Information
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NANU Samples
Forecast Delta V
NOTICE ADVISORY TO NAVSTAR USERS (NANU)
YYYYNNN SUBJ SVNxx (PRNXX) FORECAST OUTAGE JDAY
JJJ/HHMM - JDAY JJJ/HHMM 1. NANU TYPE FCSTDV
NANU NUMBER YYYYNNN NANU DTG DDHHMMZ MMM
YYYY REFERENCE NANU N/A REF NANU DTG
N/A SVN XX PRN XX START JDAY JJJ
START TIME ZULU HHMM START CALENDAR
DATE DD MMM YYYY STOP JDAY JJJ STOP
TIME ZULU HHMM STOP CALENDAR DATE DD MMM
YYYY 2. CONDITION GPS SATELLITE SVNXX (PRNXX)
WILL BE UNUSABLE ON JDAY JJJ (DD MMM YYYY)
BEGINNING HHMM ZULU UNTIL JDAY JJJ (DD MMM YYYY)
ENDING HHMM ZULU. 3. POC CIVILIAN - NAVCEN AT
[phone], HTTP//WWW.NAVCEN.USCG.GOV
MILITARY - GPS Support Center, DSN 560-2541,
COMM 719-567-2541, GPS_at_SCHRIEVER.AF.MIL,
HTTP//WWW.SCHRIEVER.AF.MIL/GPS
Satellite Identification
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NANU Samples
Forecast Delta V
NOTICE ADVISORY TO NAVSTAR USERS (NANU)
YYYYNNN SUBJ SVNxx (PRNXX) FORECAST OUTAGE JDAY
JJJ/HHMM - JDAY JJJ/HHMM 1. NANU TYPE FCSTDV
NANU NUMBER YYYYNNN NANU DTG DDHHMMZ MMM
YYYY REFERENCE NANU N/A REF NANU DTG
N/A SVN XX PRN XX START JDAY JJJ
START TIME ZULU HHMM START CALENDAR
DATE DD MMM YYYY STOP JDAY JJJ STOP
TIME ZULU HHMM STOP CALENDAR DATE DD MMM
YYYY 2. CONDITION GPS SATELLITE SVNXX (PRNXX)
WILL BE UNUSABLE ON JDAY JJJ (DD MMM YYYY)
BEGINNING HHMM ZULU UNTIL JDAY JJJ (DD MMM YYYY)
ENDING HHMM ZULU. 3. POC CIVILIAN - NAVCEN AT
[phone], HTTP//WWW.NAVCEN.USCG.GOV
MILITARY - GPS Support Center, DSN 560-2541,
COMM 719-567-2541, GPS_at_SCHRIEVER.AF.MIL,
HTTP//WWW.SCHRIEVER.AF.MIL/GPS
Outage Times
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NANU Types

• Unscheduled outages
• UNUSUFN
• UNUSABLE
• UNUNOREF

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NANU Samples
General
2004021------------------------ 1. NANU TYPE
GENERAL GENERAL MESSAGE TO ALL GPS USERS
GPS Satellite SVN23 (PRN23) was
decommissioned from active service on JDAY044 (13
Feb 04) as of 2200z. PRN23 is available for
future satellite vehicles. GENERAL MESSAGE
TO ALL GPS USERS
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NANU Samples
Classified
Agencies with the proper clearance will receive
this NANU. CLASNANUs will never have a NANU
number. An example of the content of a CLASNANU
is a Selective Availability or Anti-Spoof change.
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NANU Types

• Others
• USABINIT
• LEAPSEC

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NANU Recent Issues

• SVN23 SVN36 FCSTMX outages
• Required UFN end times
• Capability does not exist
• User community not informed if
• change was made at that time

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NANU Upgraded Capabilities

• FCSTMX NANU end time
• UFN enabled
• User community informed NLT
• 1 month prior to implementation
• GENTEXT NANU

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Summary

• 2 SOPS NANU
• History
• Description
• Format Samples
• FCSTMX changes

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The 2nd Space Operations Squadron
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