Global Navigation Satellite Systems Engineering, Policy, and Design
Julius Genachowski, FCC ChairmanGPS supporters are trying to slow what appears to be a runaway LightSquared express bearing down on the civil L1 signal frequency and thwart the would-be 4G/LTE broadband cellular wholesaler’s effort shift the burden of proof and associated costs for mitigating interference onto the GNSS community.
By Inside GNSS
Funny thing about the U.S. Constitution: it address the activities of government officials and agencies — including restraints on those activities — but not the activities of commercial business and individuals. The latter are left to federal, state, and local laws.
So, when the government conducts warrantless surveillance using GPS, the issue may come before the U.S. Supreme Court or state and federal judges at other levels. If private companies do it, they may end up at a congressional hearing.
By Inside GNSS
Resolution of the between Congressional Republicans and Democrats that threatened a shutdown of the federal government has clarified the picture for military GPS programs in the coming year, although prospects for the civil side remain uncertain.
On April 15, 2011, President Obama signed the Department of Defense and Full-Year Continuing Appropriations Act, 2011 (H.R. 1473, Public Law 112-10), the last in a series of government-wide funding measures for Fiscal Year 2011 (FY11).
By Inside GNSS
The GNSS signal spectrum in neonNavtechGPS, the Washington D.C.-based GNSS technology trainers, will introduce a new advanced receiver course for engineers and designers in their summer seminar series at the Doubletree Hotel in Annapolis, Maryland next July 11-15.
The course is called "Using Advanced GPS/GNSS Signals and Systems." Signal and receiver design expert John Betz, MITRE Corporation, and James Sennott, president of Tracking and Imaging Systems, Inc will teach it.
Pace High School “Catastrophic” team, the 2010 winnerTen Lego kits transformed into autonomous robotic vehicles will gather, with their high school student masters, on Saturday, May 21 at the Smithsonian for the 2011 national championship of the Institute of Navigation Mini-Urban Challenge.
It all happens from 8 a.m. to 5 p.m. in the Spark!Lab and first floor of the Lemelson Center for the Study of Invention and Innovation on the National Mall.
By Inside GNSS
T-Hawk MAV. Honeywell photoA GPS-guided T-Hawk Micro Air Vehicle (MAV) more frequently used in combat reconnaissance missions in Iraq and Afghanistan is being used to help emergency efforts at Japan’s damaged fukushima Daiichi nuclear plant.
Weighing just 17 pounds and measuring 14 inches in diameter, the T-Hawk is a ducted-fan vertical takeoff and landing air vehicle originally developed in recent years by Honeywell Corporation under a $40-million Defense Advanced Research Projects Agency (DARPA) technology demonstration contract.
By Inside GNSS
Continuing a series of acquisitions in recent years, Trimble announced today (April 19, 2011) that the Sunnyvale, California–based company has entered into a definitive agreement to acquire privately held Ashtech S.A.S.
In announcing the its plans, Trimble said that it expects the acquisition of the Carquefou, France, company and its affiliates will expand the U.S. company’s Spectra Precision portfolio of survey solutions and allow the company to better address emerging markets worldwide.
By Inside GNSS
The demand for techniques capable of authenticating the GNSS signals and detecting simulation attacks (spoofing) has increased exponentially in the last years, mainly targeted to financial and safety critical applications.
Associated proposals and developments addressing these issues focused on two different approaches: user segment authentication services that leveraged existing services in order to detect signal spoofing and that integrated signal authentication services into the GNSS system itself.
By Inside GNSS
Enterprise Baseline ScheduleCol. Bernie Gruber, commander of the GPS Directorate since June 2010, works in a busy place.
Through its various incarnations since being established in 1974 — as Joint Program Office, Air Force Wing, and now Directorate — the GPS program at the Space and Missile Systems Center (SMC), Los Angeles Air Force Base, California, has been at the center of the action.
By Inside GNSS
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
On Friday (April 15, 2011) the Obama administration asked the U.S. Supreme Court to take up the question of whether prolonged police surveillance using GNSS-aided tracking of a suspect requires a search warrant under the provisions of the Fourth Amendment to the U.S. Constitution.
By Inside GNSS
Applanix POS MV V5Applanix has released Version 5 of the company’s POS MV (Position and Orientation System for Marine Vessels), the next generation of its georeferencing and motion compensation system for hydrographic surveying.
By Inside GNSS
Figure 1. GLONASS-K1 AsteRx3 measurements: C/N0 in dB-Hz of L1-C/A and L3 CDMASeptentrio has announced that the Belgian GNSS manufacturer has successfully tracked the GLONASS CDMA L3 signal transmitted by the first GLONASS-K1 satellite using the company’s AsteRx3 receiver.
By Inside GNSS
