2017 Public Interface Control Working Group and Forum for the NAVSTAR GPS Public Documents, 368 [2019-00111]

Download as PDF 368 Notices Federal Register Vol. 84, No. 17 Friday, January 25, 2019 This section of the FEDERAL REGISTER contains documents other than rules or proposed rules that are applicable to the public. Notices of hearings and investigations, committee meetings, agency decisions and rulings, delegations of authority, filing of petitions and applications and agency statements of organization and functions are examples of documents appearing in this section. DEPARTMENT OF DEFENSE Department of the Air Force khammond on DSKBBV9HB2PROD with NOTICES 2017 Public Interface Control Working Group and Forum for the NAVSTAR GPS Public Documents AGENCY: Global Positioning System Directorate (GPSD), Department of the Air Force, Department of Defense. ACTION: The Global Positioning System Testing notice. SUMMARY: This notice informs the public that the Space and Missiles Center Global Positioning Systems (GPS) Directorate Engineering (SMC/GPE) Systems Integration Demonstration (SI Demo) team plans to execute a test in February 2019 to investigate legacy receiver week roll-over behavior and analyze any off-nominal behavior exhibited. Additonal details about the test and how interested civil vendors may participate is detailed below. DATES: Questionaire due by February 4, 2019. ADDRESSES: SMC/GPE, 483 North Aviation Boulevard, El Segundo, CA 90245–2808. SUPPLEMENTARY INFORMATION: The Global Positioning System (GPS) week number rollover occurs in the GPS legacy navigation (LNAV) message every 1024 weeks due to the GPS week number being represented by only 10 bits within the LNAV message. The next GPS week number roll over will occur 18 seconds prior to the 0000Z boundary (Coordinated Universal Time) between April 6/7 2019. In most cases, any negative response from a GPS receiver caused by a problem accounting for the 10-bit week number week roll over would likely affect the calendar conversion from GPS time to UTC date/ time and could result in the GPS receiver thinking it had jumped backward in time by 1024 weeks to 21/ 22 August 1999. Many receiver-specific design documents contain requirements that ensure proper handling of a rollover VerDate Sep<11>2014 16:08 Jan 24, 2019 Jkt 247001 event. However, SMC/GPE does not control, maintain, or even have an awareness of the software and requirements baseline of every GPS receiver in operation. Many performance conditions, especially those in older GPS receivers, may differ from expectations laid out in modernized receiver-specific design documents. It should be noted that the modernized civil navigation (CNAV) signals all utilize a 13-bit week number representation and the use of those CNAV signals can delay potential week number roll-over problems to 5/6 January 2137. Below are a few questions whose answers would help SMC/GPE understand your receiver’s expected behavior during the upcoming GPS 10bit week number roll-over: 1. Does your strategy involve user input? 2. Do the users understand and know the procedure? 3. Is the procedure detailed in a manual or other document? 4. Is the procedure, manual, or documentation posted on your website? 5. Are there concerns for any automated systems your receiver is integrated into? 6. Do you plan on posting product advisories for each receiver type? If so, where? 7. Has testing been planned/ completed to confirm receiver performance expectations? 8. Would you be interested in participating in the test by either: 1) Supplying receivers & technical support to test with the government team? 2) Testing using your own test setup and configuration? 9. How many receiver types would you be able to supply/test for this effort? (Note, not all receiver types may be applicable to this test event.) If you wish to participate in this test, please submit the answers to the questions above to SMC/GPE mailbox at smc.gpev.sidemo28@us.af.mil by February 4, 2019. After the submition of the questinaire, the SI Demo team will schedule individual meetings with interested civil vendors to further discuss their participation in the test in more detail. 2Lt Marcy Gouri (marcy.gouri@us.af.mil) or FOR FURTHER INFORMATION CONTACT: PO 00000 Frm 00001 Fmt 4703 Sfmt 4703 Capt Aaron Knoblauch (aaron.knoblauch@us.af.mil) Henry Williams, Acting Air Force Federal Register Liaison Officer. [FR Doc. 2019–00111 Filed 1–24–19; 8:45 am] BILLING CODE 5001–10–P DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health Draft NTP Monograph on the Systematic Review of Evidence of Long-Term Neurological Effects Following Acute Exposure to the Organophosphorus Nerve Agent Sarin; Availability of Document; Request for Comments; Notice of Peer-Review Meeting; Amended Notice AGENCY: National Institutes of Health, HHS. ACTION: Notice. This notice amends Federal Register notice 83 FR 63662, published December 11, 2018, announcing the availability of the Draft National Toxicology Program (NTP) Monograph on the Systematic Review of Evidence of Long-Term Neurological Effects Following Acute Exposure to the Organophosphorus Nerve Agent Sarin for public comment prior to peer review. In partnership with the National Institutes of Health (NIH) Countermeasures Against Chemical Threats (CounterACT) Program, the Office of Health Assessment and Translation (OHAT), Division of the National Toxicology Program (DNTP), National Institute of Environmental Health Sciences (NIEHS), conducted a systematic review to evaluate the evidence of long-term neurological damage in humans after acute, sublethal exposure to sarin. The peerreview meeting will be held by webcast only and open to the public; registration will be required for attendance by webcast and to present oral comments. Information about the meeting and registration is available at https:// ntp.niehs.nih.gov/go/36051. DATES: Meeting: Scheduled for February 4, 2019, 9:00 a.m. Eastern Standard Time (EST) to adjournment. The preliminary agenda is available at https:// SUMMARY: E:\FR\FM\25JAN1.SGM 25JAN1

Agencies

[Federal Register Volume 84, Number 17 (Friday, January 25, 2019)]
[Notices]
[Page 368]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-00111]


========================================================================
Notices
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains documents other than rules 
or proposed rules that are applicable to the public. Notices of hearings 
and investigations, committee meetings, agency decisions and rulings, 
delegations of authority, filing of petitions and applications and agency 
statements of organization and functions are examples of documents 
appearing in this section.

========================================================================


Federal Register / Vol. 84, No. 17 / Friday, January 25, 2019 / 
Notices

[[Page 368]]



DEPARTMENT OF DEFENSE

Department of the Air Force


2017 Public Interface Control Working Group and Forum for the 
NAVSTAR GPS Public Documents

    AGENCY: Global Positioning System Directorate (GPSD), Department of 
the Air Force, Department of Defense.
    ACTION: The Global Positioning System Testing notice.
SUMMARY: This notice informs the public that the Space and Missiles 
Center Global Positioning Systems (GPS) Directorate Engineering (SMC/
GPE) Systems Integration Demonstration (SI Demo) team plans to execute 
a test in February 2019 to investigate legacy receiver week roll-over 
behavior and analyze any off-nominal behavior exhibited. Additonal 
details about the test and how interested civil vendors may participate 
is detailed below.

DATES: Questionaire due by February 4, 2019.

ADDRESSES: SMC/GPE, 483 North Aviation Boulevard, El Segundo, CA 90245-
2808.

SUPPLEMENTARY INFORMATION: The Global Positioning System (GPS) week 
number rollover occurs in the GPS legacy navigation (LNAV) message 
every 1024 weeks due to the GPS week number being represented by only 
10 bits within the LNAV message. The next GPS week number roll over 
will occur 18 seconds prior to the 0000Z boundary (Coordinated 
Universal Time) between April 6/7 2019. In most cases, any negative 
response from a GPS receiver caused by a problem accounting for the 10-
bit week number week roll over would likely affect the calendar 
conversion from GPS time to UTC date/time and could result in the GPS 
receiver thinking it had jumped backward in time by 1024 weeks to 21/22 
August 1999. Many receiver-specific design documents contain 
requirements that ensure proper handling of a rollover event. However, 
SMC/GPE does not control, maintain, or even have an awareness of the 
software and requirements baseline of every GPS receiver in operation. 
Many performance conditions, especially those in older GPS receivers, 
may differ from expectations laid out in modernized receiver-specific 
design documents. It should be noted that the modernized civil 
navigation (CNAV) signals all utilize a 13-bit week number 
representation and the use of those CNAV signals can delay potential 
week number roll-over problems to 5/6 January 2137. Below are a few 
questions whose answers would help SMC/GPE understand your receiver's 
expected behavior during the upcoming GPS 10-bit week number roll-over:
    1. Does your strategy involve user input?
    2. Do the users understand and know the procedure?
    3. Is the procedure detailed in a manual or other document?
    4. Is the procedure, manual, or documentation posted on your 
website?
    5. Are there concerns for any automated systems your receiver is 
integrated into?
    6. Do you plan on posting product advisories for each receiver 
type? If so, where?
    7. Has testing been planned/completed to confirm receiver 
performance expectations?
    8. Would you be interested in participating in the test by either: 
1) Supplying receivers & technical support to test with the government 
team? 2) Testing using your own test setup and configuration?
    9. How many receiver types would you be able to supply/test for 
this effort? (Note, not all receiver types may be applicable to this 
test event.)
    If you wish to participate in this test, please submit the answers 
to the questions above to SMC/GPE mailbox at 
smc.gpev.sidemo28@us.af.mil by February 4, 2019. After the submition of 
the questinaire, the SI Demo team will schedule individual meetings 
with interested civil vendors to further discuss their participation in 
the test in more detail.

FOR FURTHER INFORMATION CONTACT: 2Lt Marcy Gouri 
(marcy.gouri@us.af.mil) or Capt Aaron Knoblauch 
(aaron.knoblauch@us.af.mil)

Henry Williams,
Acting Air Force Federal Register Liaison Officer.
[FR Doc. 2019-00111 Filed 1-24-19; 8:45 am]
 BILLING CODE 5001-10-P