Global Navigation Satellite Systems Engineering, Policy, and Design
Gen. Norton Schwartz, USAF photoThe Global Positioning System is vulnerable to threats such as jamming and anti-satellite weapons and the United States should reduce its dependence on the system while developing alternatives for precise positioning, navigation, and timing (PNT), the U.S. Air Force’s top military leader said Wednesday (January 20).
By Inside GNSS
The largest annual event focusing on international ground, air and maritime unmanned systems will take place this year at the Colorado Convention Center in Denver from August 24 through 27 2010.
It is sponsored by the industry organization, Association for Unmanned Vehicle Systems International (AUVSI).
Organizers expect 5,000 people from 30 countries to attend the four days of general sessions, workshops, poster sessions and live demonstrations of civil, commercial and military applications.
By Inside GNSS
US Army soldier equipped with new Land Warrior gear, including GPS within a computer/radio subsystem (CRS) (photo: defenseimagery.mil)Officials from the U.S. Strategic Command (STRATCOM) and Air Force Space Command (AFSPC) have announced their decision to optimize the GPS constellation over the next two years so as to improve global coverage for GPS military users in Afghanistan and Iraq. Inside GNSS reported on the initiative last November.
The need to support U.S. and allied military operations in Afghanistan and Iraq, where terrain in geographically challenging areas can degrade complete coverage of GPS signals, prompted the Air Force to seek ways to improve signal coverage.
By Inside GNSS
Spirent Federal Systems specializes in GPS and GNSS test technology. Its GNSS test systems can be tailored for government or industry needs, including support for encrypted military codes, interference simulation, commercial GPS applications and high dynamic testing. The company will hold identical training conferences this year on the East and West coasts.
By Inside GNSS
Spirent Federal Systems specializes in GPS and GNSS test technology. Its GNSS test systems can be tailored for government or industry needs, including support for encrypted military codes, interference simulation, commercial GPS applications and high dynamic testing. The company will hold identical training conferences this year on the East and West coasts.
The West Coast conference will be held at the Doubletree Hotel Anaheim/Orange County, Anaheim, California.
By Inside GNSS
L-3 Interstate Electronics Corporation (IEC) has announced that its latest modernized GPS receiver has successfully acquired and tracked live block IIR-M satellite M-Code (pseudo–M-Code) signals indicating proper operation of many receiver functions.
Ice on the tower at Loran Station Dana (Indiana). Photo by Charles SchaafPresident Obama had a big day on October 28, signing 2010 bills for the departments of defense (DoD) and homeland security (DHS) that cut significant programs — eLoran, HIGPS, OCX — connected with the Global Positioning System.
By Inside GNSS
Combined Joint Task Force 76 helicopter carries troops and supplies over Eastern Afghanistan. Photo by Staff Sgt. Michael Casteel, U.S. ArmyU.S. Air Force officials are moving to reconfigure the GPS constellation to create a 27-satellite geometry that will improve the availability and accuracy of positioning, navigation, and timing (PNT) capabilities for U.S. military forces in Afghanistan and Iraq.
Although the constellation currently has 30 operational space vehicles (SVs), not including the SVN49/PRN1 that has still not been set healthy, a number of the spacecraft are located nearby other satellites — effectively creating a 24-SV geometry. (See accompanying figure.)
By Inside GNSS
TruTrak Evolution TTE-SS GPS Receiver BoardL-3 Interstate Electronics Corporation IEC) has announced two additional configurations of its miniaturized, hardened GPS TruTrak Evolution receiver and a new configuration of its GPS-based guidance & navigation unit (GNU) Evolution board.
By Inside GNSS
The 746th Test Squadron (746 TS) will offer authorized GPS users another testing and training opportunity in its series of JAMFEST events on November 2-6 2009 at the Stallion Air Field in the northern White Sand Missile Range, near Socorro, New Mexico.
By Inside GNSS
The 746th Test Squadron (746 TS) will offer authorized GPS users another testing and training opportunity in its series of JAMFEST events on November 2–6 at White Sands Missile Range, New Mexico.
Introduced in May 2004, JAMFEST provides a realistic GPS jamming environment for testing GPS-based navigation systems.
(Updated 11 a.m. (PDT), includes additional details from the GPS Wing)
A $97.4-million reduction in the GPS program made by the U.S. House of Representatives would affect the modernization program for the operational control segment (OCX), not the GPS III satellite budget as reported earlier.
In adopting the action of its appropriations committee, the full House approved H.R. 3326, the Department of Defense (DoD) Fiscal Year 2010 (FY10) budget, on July 30. The bill was referred to the Senate Appropriations Committee on August 3. In its report on the bill, the House committee said it made the cuts because of contract delays in the OCX program.
By Inside GNSS
Iridium Satellite LLC (Iridium) and Boeing have achieved two major milestones to further develop and demonstrate capability enhancements to the High Integrity Global Positioning System (iGPS) program for the U.S. Naval Research Laboratory.
By Inside GNSS
