Allen Instruments Blog

SUBJ: IPS GEOMAGNETIC DISTURBANCE WARNING 12/02 ISSUED AT 23/2355Z JANUARY 2012 BY THE AUSTRALIAN SPACE FORECAST CENTRE.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED
DUE TO CORONAL MASS EJECTION
FROM 24-26 JANUARY 2012

SUBJ: IPS GEOMAGNETIC DISTURBANCE WARNING 12/01 ISSUED AT 23/0103Z JANUARY 2012 BY THE AUSTRALIAN SPACE FORECAST CENTRE.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED
DUE TO CORONAL MASS EJECTION
FOR 23 JANUARY 2012
MINOR GEOMAGNETIC STORM IN PROGRESS AT THE TIME OF ISSUING THIS WARNING _____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
23 Jan: Quiet to Minor Storm

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2012001
SUBJ: SVN33 (PRN3) FORECAST OUTAGE JDAY 023/1500 – JDAY 024/0300
1. NANU TYPE: FCSTMX
NANU NUMBER: 2012001
NANU DTG: 181730Z JAN 2012
REFERENCE NANU: N/A
REF NANU DTG: N/A
SVN: 33
PRN: 3
START JDAY: 023
START TIME ZULU: 1500
START CALENDAR DATE: 23 JAN 2012
STOP JDAY: 024
STOP TIME ZULU: 0300
STOP CALENDAR DATE: 24 JAN 2012
2. CONDITION: GPS SATELLITE SVN33 (PRN3) WILL BE UNUSABLE ON JDAY 023
(23 JAN 2012) BEGINNING 1500 ZULU UNTIL JDAY 024 (24 JAN 2012)
ENDING 0300 ZULU.

NASA Marshall Space Flight Center scientists are predicting that the peak in the current sunspot cycle will now occur earlier than previously forecast (May-June 2013). They are now predicting the peak in February 2013:

“The current prediction for Sunspot Cycle 24 gives a smoothed sunspot number maximum of about 96 in February of 2013. We are currently about three years into Cycle 24. Increased activity in the last few months has raised the predicted maximum and moved it earlier in 2013. The current predicted size still makes this the smallest sunspot cycle in over 80 years.”

More:
http://solarscience.msfc.nasa.gov/predict.shtml

The president’s top advisors on navigation policy said today (January 13, 2012) that “no practical solutions or mitigation” would enable a proposed broadband network to co-exist near-term with GPS-based devices, including several systems needed for aviation safety.

The officials said a separate analysis by the Federal Aviation Administration had concluded “the LightSquared proposals are not compatible with several GPS-dependent aircraft safety-of-flight systems.” Because of the definitive nature of these results, the officials added that “no additional testing is warranted at this time.”

The letter was sent to Lawrence Strickling, head of the National Telecommunications and Information Administration (NTIA), which coordinates federal use of frequencies and advises the White House on radio frequency issues.

The letter, from the deputy secretaries of the U.S. defense and transportation departments who cochair the National Space-Based Positioning Navigation and Timing (PNT) Executive Committee (ExComm), could well represent the knockout punch for LightSquared’s attempt to implement a high-powered wireless broadband in radio spectrum adjacent to that of GPS L1 signals.

To read the entire article please select the following link:

http://www.insidegnss.com/node/2900?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A