In the beginning, there was just one GNSS — the Global Positioning System — and just one fully available signal on the L1 frequency.
Eventually, some clever scientists discovered how to exploit certain characteristics of the encrypted L2 signal to come up with so-called codeless and semi-codeless techniques that enabled dual-frequency positioning. This hastened the development of user equipment that used the carrier phase of signals as well as the code to deliver high-precision results.
By Inside GNSSWorking 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 Günter W. HeinQ: Are there low-cost and low-weight options for GNSS IF storage?
By Inside GNSSIt has been a long journey to success for Mikel M. Miller, the U.S. Air Force’s lead scientist for positioning, navigation, and timing (PNT) science and technology development.
By Inside GNSSThe Galileo E6 signal is centered at 1278.75 MHz, and comprises three signals: an authorized signal (E6A, the publicly regulated service, PRS plus two civilian signals), a data component (E6B), and a pilot component (E6C). Both E6B and C are modulated using binary-phase shift keying (BPSK) code division multiple access (CDMA) memory codes, having lengths of 5,115 chips and chipping rates of 5.115 Mcps.
By Inside GNSSReal-time position accuracy, achievable in dense urban areas using low-cost equipment, is currently limited to tens of meters. If this could be improved to five meters or better, a host of potential applications would benefit. These include situation awareness of emergency, security and military personnel and vehicles; emergency caller location, mobile mapping, tracking vulnerable people and valuable assets, intelligent mobility, location-based services and charging, augmented reality; and enforcement of curfews, restraining orders and other court orders.
By Inside GNSSReasonable Expectations of Privacy and a discussion of privacy in the United States typically begins with the Fourth Amendment of the U.S. Constitution, which provides that “[t]he right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated.” In U.S. v Katz, the U.S. Supreme Court found that this Fourth Amendment protection created an individual’s constitutional right to privacy.
By Ingo BaumannThe 23rd world congress on intelligent transportation systems will take place at the Melbourne Convention and Exhibition Centre from October 10 through October 14, 2016. ITS Australia hosts this year’s event on behalf of ITS Asia Pacific, ITS America and ERTICO.
Melbourne is know for its intelligent transport system network that has become one of the best in the world. The conference organizers expect 7,000 international delegates and 300 exhibitors.
The them is "ITS-Enhancing Liveable Cities and Communities."
By Inside GNSSIWUGR 2016 will take place at in Selangor, Malayia at the Universiti Putra Malaysia (UPM) in the Faculty of Engineering Auditorium on November 8 and 9.
IEEE Geoscience & Remote Sensing (GRSS) members will share knowledge and experience on recent developments and advancement in their fields, particularly on the topic of remote sensing for a sustainable environment.
The deadline for abstract submission is August 31.
Topics will include:
Geoscience and remote sensing technologies
Environmental and disaster monitoring
Spectracom has introduced two timing-related products, the GSG 6-Series GPS/GNSS simulator for testing receivers’ timing capabilities and the SecureSync Timing Reference with enhanced Loran (eLoran) backup capability for GNSS.
Kevin Dennehy, a seasoned GNSS industry conference developer, columnist and writer and a retired Army National Guard officer, has joined Inside GNSS. As managing editor, he will be responsible for reporting online about the GNSS industry and working with Editor and Publisher Glen Gibbons on the print edition.
Contact him with company news and new product announcements at <kevin@insidegnss.com>.
By Inside GNSSThe 2016 International Symposium on GNSS, an annual event for researchers and the satellite navigation industry in the Asia Pacific region, will take place in Tainan, Taiwan on December 5,6 and 7 in the International Conference Hall of the National Cheng Kung University (NCKU).
By Inside GNSS