Global Navigation Satellite Systems Engineering, Policy, and Design
To gauge the present state of mind of the GNSS and PNT community, the state of play in application development, and the state of the art in positioning, navigation and timing technology, we asked four international experts for their perspectives. Here are the questions posed to them.
By Inside GNSS
The Department of Transportation (DOT) selected 11 firms to demonstrate technologies that could be used to back up the services provided by GPS should GPS signals be jammed, spoofed or unavailable.
By Dee Ann Divis
The U.S. Army is reaching out to industry for the advanced inertial measurement unit (IMU) and timing technology it needs to support warfighters when GPS is unavailable or compromised.
By Dee Ann Divis
The basis of all precision positioning and navigation is precision timing. Timing comes first. GPS Time is defined on the basis of a set of atomic clocks orbiting aboard the satellites and on the ground in monitoring stations; similarly for the other GNSS systems.
By Inside GNSS
Today, more and more integral fields of application including banking and finance, telecom networks and electricity grids, rely heavily on accurate, reliable, and traceable signals for time and synchronization.
By Ricardo Píriz, et al
One of the biggest 5G network deployment challenges is synchronizing higher volumes of more densely packed base stations. Another is keeping services operating through GNSS lapses due to vulnerabilities such as jamming, spoofing or loss of signal. Microchip Technology Inc., via its Microsemi subsidiary, is solving these and other challenges for networks with additions to its Precision Time Protocol (PTP) PackeTime® portfolio including the TimeProvider 4100 Release 2.0. The TimeProvider release adds 10 Gigabit Ethernet (GE) support, a Boundary Clock operation mode that lowers operational costs, and other enhancements to improve how timing flows are distributed from multiple sources to a network’s base stations and other endpoints.
By Inside GNSS
The upcoming GPS Week Number Rollover (WNRO) on April 6 is bringing a lot of attention not only in the specialized GNSS media, but also in the general media. The WNRO is a known feature of GPS that occurs only every roughly 20 years and thus can be anticipated and tested in a receiver using a GNSS simulator.
By Inside GNSS
Precision time and frequency solutions provider EndRun Technologies has launched its next generation, e-Series Distribution Chassis that adds a secure, integrated network management interface. The e-Series Distribution Chassis is said to maintain the industry leading frequency, pulse, and time code distribution functionality that provides high integrity signals to mission critical systems including communications, satellite earth stations, broadcast transmitters, military test ranges, production test, and others.
By Inside GNSS
EndRun Technologies, a provider of precision time and frequency solutions, has announced the availability of the Meridian II 2U Precision TimeBase, a metrology grade time and frequency standard traceable to UTC(USNO). This addition to the Meridian II product family introduces an Ultra-Stable Rubidium oscillator option, increased output capacity, and modular power supplies for high-availability, mission critical, and high-performance applications.
By Inside GNSS
The deadline for submitting abstracts for the Institute of Navigation’s (ION) ION GNSS+ 2019 Conference is Friday, March 1, 2019.
By Inside GNSS
China, Russia and other adversaries including Iran and North Korea pose a threat to U.S. infrastructure on the ground and in space according to a new congressional report, a conclusion that may sharpen lawmakers’ focus on building a recently mandated backup system for GPS timing,
The Worldwide Threat Assessment, released Wednesday by the Senate Select Committee on Intelligence, says that all four nations plus criminal organizations have the ability to use cyber techniques to create local disruptions of critical infrastructure.
By Dee Ann Divis
At next week’s Precise Time and Time Interval Systems and Applications (PTTI) annual conference sponsored by ION, attendees can take part in a technical program designed to disseminate and coordinate PTTI information at the user level, review present and future PTTI requirements, inform government and industry engineers, technicians, and managers of precise time and frequency technology and its problems, and provide an opportunity for an active exchange of new technology associated with PTTI.
By Stan Goff
Manassas, Virginia, January 8, 2019–Due to the extended impasse between U.S. Congressional leaders and the White House that has created a partial U.S. government shutdown, the Institute of Navigation (ION) has decided to postpone the Cognizant Autonomous Systems for Safety Critical Applications (CASSCA) Conference scheduled to take place January 28-29, 2019 at the Hyatt Regency Reston in Reston, Virginia.
By Inside GNSS
