TAG: GPS Block IIF satellite

Delta IV GPS IIF-9 Launch Highlights

April 2, 2015By

The U.S. Air Force’s ninth GPS Block IIF satellite (GPS IIF-9) launched on March 25 aboard a United Launch Alliance (ULA) Delta IV rocket, which has been the workhorse of the GPS fleet for successful launches. ULA provided this video showing highlights of the launch. read more

GNSS Constellations March On

March 25, 2015By

This week nearly all the global navigation satellite systems will push their spatial presence one or two steps further, or higher, if they perform as scheduled. Rarely if ever has there been such a concentrated period of activity in the catapult category. Are we witnessing the real dawn of the multi-GNSS era? GPS, Galileo, BeiDou, and IRNSS all have positioned... read more

GPS IIF-9 Prepped for March 25 Launch

March 18, 2015By
GPSIIF-launch-ULA-0

The U.S. Air Force’s ninth GPS Block IIF satellite (GPS IIF-9) has been encapsulated in the Delta IV rocket’s four-meter-diameter nose cone at a processing facility, and moved to the launch pad at Space Launch Complex 37 for mating to its booster inside the mobile service tower. Launch is scheduled for March 25 at 2:36 p.m. EDT (1836 GMT) from Space Launch Complex... read more

Delta Rocket Moves to Launchpad for March GPS Launch

February 9, 2015By

The Delta 4 rocket that will launch the next GPS satellite has been rolled out to the launch pad, reports Spaceflight Now. The satellite itself, GPS IIF-9, will be attached to the rocket in March. The United Launch Alliance vehicle is scheduled for launch March 25. The launch will be the 371st Delta rocket since 1960 and the 29th Delta 4 since 2002.... read more

The System: eLoran Operational on Eastern UK Coast

December 1, 2014By
Bridge of the Galatea, a GLA vessel that carries a eLoran receiver and conducted tests of the new system.

Back-up to Vulnerable GPS Signals Required for Busy Shipping Lanes The General Lighthouse Authorities (GLAs) of the UK and Ireland announced October 31 the initial operational capability of UK maritime eLoran. Seven differential reference stations now provide additional position, navigation, and timing (PNT) information via low-frequency pulses to ships fitted with eLoran receivers. The service will help ensure they can... read more

Delay in Setting Recently Launched Block IIF Satellite Healthy

April 17, 2014By
A United Launch Alliance Delta IV lifts off from Space Launch Complex-37 with the Air Force's Global Positioning System (GPS) IIF-5 satellite. This launch marked the 25th Delta IV flight since the first flight in 2002.

The latest GPS Block IIF satellite, IIF-5 or SVN64 (operating as PRN30), was launched on February 21, 2014. Typically, GPS satellites are checked out and made operational within about a month following launch. SVN64 has yet to be set healthy. The delay is due to an extended navigation test being performed by the GPS master control station. A navigation upload... read more

New GPS IIF Satellite Launched

February 21, 2014By
A United Launch Alliance Delta IV lifts off from Space Launch Complex-37 with the Air Force's Global Positioning System (GPS) IIF-5 satellite. This launch marked the 25th Delta IV flight since the first flight in 2002.

News compiled with the assistance of CANSPACE listserv. After a brief delay due to concerns over solar radiation trends, the GPS IIF-5 satellite was successfully launched at the end of the designated launch window at 01:59 UTC on February 21. The satellite, attached to the launch rocket’s upper stage, was initially placed in a highly elliptical orbit. Following a third... read more

GPS IIF-5 Launch Delayed

October 22, 2013By

The scheduled October 23 launch of GPS IIF-5, the fifth in the current “follow-on” generation of GPS satellites, has been postponed in order to complete a review of an adjustment made to the rocket’s upper stage engine. A fuel leak in that engine of the Delta 4 rocket during a GPS launch in October of last year created some worries... read more

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