Aerospace and Defense Archives - Page 54 of 72 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

May 30, 2014

GPS IRT Shuffled, Shrunk in Budget Squeeze

Maj. Gen. (ret.) Robert A. Rosenberg, former GPS IRT chair

The GPS Independent Review Team (IRT), a key player in GPS policy for nearly 20 years, has been disbanded by the Air Force in what several sources say is an effort to save money.

Created in 1997 for a temporary three-month assignment, the IRT has been instrumental in shaping the current GPS constellation including designing military’s M-code — giving the signal its distinctive two humps — and pushing to get that signal into the constellation earlier than initially planned.

By Inside GNSS

May 21, 2014

China Plans to Complete BeiDou Ahead of Schedule

China’s BeiDou will accelerate the pace of its development, even as the world’s other three GNSS systems are experiencing delays and difficulties, according to speakers in the opening session of the China Satellite Navigation Conference (CSNC 2014) today (May 21) in Nanjing.

By Inside GNSS

May 6, 2014

Collective Detection of Multi-GNSS Signals

Clockwise from left: (a) article equations, (b) the probablility of acquiring a single satellite to the power of the nyumber of satellites in view, (c) Indoor scenario of signal collection at ISAE navigation lab, Toulouse

Working Papers explore the technical and scientific themes that underpin GNSS programs and applications. This regular column is coordinated by Prof. Dr.-Ing. Günter Hein, head of Europe’s Galileo Operations and Evolution.

By Inside GNSS

April 30, 2014

Key GPS/PNT Official Teri Takai Leaving DoD

Teresa Takei, DoD CIO. DoD photo

Teri Takai, the Department of Defense’s chief information officer (DoD CIO) announced April 28 that she would be leaving at the end of this week. She is the top advisor to the secretary of defense on navigation and timing plus a host of other subjects including telecommunications, satellite communications, and spectrum issues.

By Inside GNSS

April 3, 2014

GLONASS Suffers Temporary Systemwide Outage; Multi-GNSS Receiver Overcomes Problem (updated)

Smartphone tracking results from two smartphones. Yellow dotted line, GPS/GLONASS only; green dotted line, GPS/GLONASS/QZSS/BeiDou. Broadcom Corporation image.

Just when they thought it was safe to go back into space . . . .

The Russian GLONASS system, which had appeared to be recovering from a series of organizational and technical problems in recent years, appears to have suffered a systemic disruption during the past 24 hours — beginning just past 1 a.m. Moscow time on April 2 (UTC+4) — 6 p.m. EDT on Tuesday (April 1, 2014).

By Inside GNSS

U.S. Air Force Authorizes Lockheed to Finish GPS III SVs 7 & 8

The U.S. Air Force has awarded Lockheed Martin more than $245 million in contract options to complete production of its seventh and eighth GPS Block III satellites.

The two space vehicles (SVs 07–08) received initial funding under a February 2013 long-lead material contract for the Air Force’s second set of four satellites, GPS III SV 05–08. Similar to this current award announced yesterday (April 1, 2014), the Air Force exercised an option to complete production of SVs 05–06 in December 2013.

By Inside GNSS

March 31, 2014

Munich Summit 2014 Stages Comeback as Europe’s Preeminent GNSS Event

Matthias Petschke, European Commission Director of EU Satellite Navigation Programs

After an organizational hiccup led to its cancellation last year, the “reloaded” Munich Satellite Navigation Summit 2014 successfully re-established the event as Europe’s leading forum for GNSS policy dialog.

By Inside GNSS

March 23, 2014

Paternity Suit

Don’t be misled by the title. This is not another round of speculation about who should be proclaimed the rightful “Father of GPS.”

By Inside GNSS

GPS Modernization Stalls

With the optimism of college-bound seniors touring the Ivy League, GPS managers have been weighing options to dramatically change the GPS constellation. Now, after studying the costs, considering the benefits, and assessing the funding climate, officials have made the starkly fiscal decision to stick close to home and take a few extra years to finish.

By Dee Ann Divis

March 18, 2014

FAA May Tap Three Reference Networks to Monitor Civil GPS Signals

Aviation officials are looking at combining data from the Air Force’s planned GPS ground system with services from other monitoring systems — or even relying on other systems entirely — to save money on monitoring the GPS civil signals.

By Inside GNSS

March 17, 2014

Who’s Your Daddy?

In this article, we will take a look at the various GNSS signals from the perspective of their cost-benefit tradeoffs. First, we’ll look at the evolution of consumer GPS architecture to date — where acquisition speed and sensitivity have been the main drivers of receiver architecture. That architecture has evolved rapidly to take full advantage of the characteristics of the GPS C/A code.

By Inside GNSS

March 6, 2014

FY15 Budget: GPS III Procurement to Slow, Dual-Launch Funding Cut

The Air Force is slowing GPS modernization and dropping part of the funding for dual launch of satellites, said defense officials describing the President’s Fiscal Year 2015 (FY15) budget on Wednesday (March 5, 2014).

Air Force Undersecretary Eric Fanning said the Air Force would continue to “honor our investments and obligations” regarding the Global Positioning System but would “reprofile” the GPS III program so that it meets constellation sustainment demands.

By Inside GNSS

March 5, 2014

DoT Agrees to GPS CNAV Test Plan, Seeks Public Comment

Message Type 30: satellite clock data, and corrections for ionospheric and group delay. From IS–GPS–200G

In a Federal Register notice issued today (March 5, 2014), the U.S. Department of Transportation (DoT) invited public comments on U.S. Air Force plans to implement preoperational L2C and L5 civil navigation (CNAV) messages on GPS Block IIR-M and IIF satellites next month.

By Inside GNSS

Aerospace and Defense

Companies Step into GPS III Competition as Air Force Weighs Broad...

GPS OCX Program Being Restructured as Budget Pressures Mount...

GPS IRT Shuffled, Shrunk in Budget Squeeze

China Plans to Complete BeiDou Ahead of Schedule

Collective Detection of Multi-GNSS Signals

Key GPS/PNT Official Teri Takai Leaving DoD

GLONASS Suffers Temporary Systemwide Outage; Multi-GNSS Receiver Overcomes Problem (updated)

U.S. Air Force Authorizes Lockheed to Finish GPS III SVs 7 & 8

Munich Summit 2014 Stages Comeback as Europe’s Preeminent GNSS Event

Paternity Suit

GPS Modernization Stalls

FAA May Tap Three Reference Networks to Monitor Civil GPS Signals

Who’s Your Daddy?

FY15 Budget: GPS III Procurement to Slow, Dual-Launch Funding Cut

DoT Agrees to GPS CNAV Test Plan, Seeks Public Comment