Aerospace and Defense

Legislation to Stop U.S. Use of Russian Rocket Engines Could Affect GPS
January 29, 2016

Legislation to Stop U.S. Use of Russian Rocket Engines Could Affect GPS

U.S. Senator John McCain

If approved, legislation halting the use of a Russian rocket engine could force delays in the launch of U.S. military satellites, including, potentially, GPS III spacecraft planned for launch beginning next year.

The bill, introduced this week by Sen. John McCain R-Arizona, the chairman of the Senate Armed Services Committee, and House Majority Leader Kevin McCarthy, R-California, would ban the use of Russian RD-180 rocket engines for the evolved expendable launch vehicle program (EELV).

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By Inside GNSS
Feds Reach Out to Small Companies for GPS Innovations
January 21, 2016

Feds Reach Out to Small Companies for GPS Innovations

The federal government is looking to small firms to help solve some of its toughest GPS-related technology problems with many of the projects focusing on countering jamming while others endeavor to simplify signal acquisition and improve links within the constellation. A recent spate of requests for proposals for Small Business Innovation Research (SBIR) contracts have been released by various agencies. These include the following:

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By Inside GNSS
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January 18, 2016

GNSS Satellite-Based Augmentation Systems

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.

With the support of the European Space Agency (ESA), a European team designed a frequency- and time-transfer process and validated its performance in a complex navigation test bed. This two-way time-transfer technology took advantage of the following:

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By Günter W. Hein
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GAGAN — India’s SBAS

The GPS Aided Geo Augmented Navigation (GAGAN) system was developed by the Indian Space Research Organization (ISRO), together with Airports Authority of India (AAI), to deploy and certify an operational satellite-based augmentation system (SBAS). The system’s service area covers the Indian Flight Information Region (FIR), with the capability of expanding to neighboring FIRs. 

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By Inside GNSS
Air Force Space Command to Release New GPS III Feasibility Solicitation
December 24, 2015

Air Force Space Command to Release New GPS III Feasibility Solicitation

Late yesterday (December 22, 2015) the Pentagon announced the imminent release of a new solicitation in its two-year search for a contractor to build the next tranche of GPS III satellites.

Air Force Space Command announced on the Federal Business Opportunities (FBO) website that it would publish a request for proposals  (RFP) for a phase 1 production readiness feasibility assessment for the new GPS III spacecraft on or around January 8.

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By Inside GNSS
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GPS OCX Delayed, Again
December 9, 2015

GPS OCX Delayed, Again

The Air Force is weighing its options for a new GPS ground system after a detailed review last week revealed the system would be further delayed — perhaps to as late as 2023.

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By Inside GNSS
Code Shift Keying
November 19, 2015

Code Shift Keying

Equations 1 – 10

The constant growth and evolution of the positioning, navigation, and timing (PNT) market generate demands for more and more added-value applications and services relying on GNSS signals, with expectations for improved accuracy and availability. Some services may also rely on added-value content other than navigation messages, for example, higher data volume with less latency, such as the data carried by satellite-based augmentation system (SBAS) services and the Galileo Commercial Service.

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By Günter W. Hein
International Navigation Gathering Highlights GNSS Advances and Distractions
November 17, 2015

International Navigation Gathering Highlights GNSS Advances and Distractions

Sergey Revnivykh

Speakers at the recent International Association of Institutes of Navigation (IAIN) conference in Prague threw into stark relief some of the big GNSS programs and even bigger GNSS questions.
 
Prof.-Dr. Günter Hein, former head of the European Space Agency (ESA) EGNOS and GNSS Evolution Program Department and Emeritus of Excellence at University FAF Munich, delivered a fact-filled and level-headed presentation on the status of Galileo, the European Union’s civil-owned and non-military GNSS, with slides and information provided by ESA.
 

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By Inside GNSS
OCX Faces Crucial Pentagon Review, Congressional Broadside
October 29, 2015

OCX Faces Crucial Pentagon Review, Congressional Broadside

The new GPS ground control system’s cascading delays and ballooning budget have the Department of Defense (DoD) looking at other options, including shifting to an enhanced version of an existing control system, Inside GNSS has learned.

The Next Generation Operational Control System (OCX), which already has more than doubled in cost, will be the focus of a second “Deep Dive” review before the DOD’s top acquisition official on December 4.

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By Inside GNSS
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