Global Navigation Satellite Systems Engineering, Policy, and Design
The future-oriented Navigation Technology Satellite-3 (NTS-3) spacecraft has taken one more step towards its in-space demonstration, scheduled for 2023. The satellite bus that will carry it has arrived at L3Harris Technologies of Palm Bay, Florida, delivered by Northrop Grumman Corporation.
By Inside GNSS
In the beginning, GPS was envisioned as a military program. A sign on the wall in the Joint Program Office where the system came into being during the early 1970s read: “The mission of this Program Office is to:
A Department of Homeland (DHS)-chartered May 2021 report concludes that PNT threat and resilience concerns are not as dire as some have made them out to be, and that funds for backup could be spent elsewhere. Why this runs counter to other recent government reports is not clear, nor is the fallout from this divergence of Congressionally mandated views. The Department of Transportation has distanced itself a bit from this report by the RAND Corporation—and even its issuer, the DHS, seems to have done so.
Hexagon has acquired Immersal Oy, a provider of spatial mapping and visual positioning solutions used to produce augmented reality (AR) applications.
By Inside GNSS
New frontiers have opened up for line-of-sight communication, targeting, autonomous navigation, intelligence, surveillance and reconnaissance (ISR) and more, with the astonishing advances in inertial technology.
By Inside GNSS
The Air Force Strategic Development Planning & Experimentation Office demonstrated fused PNT technologies within an AgilePod during six successful Phase I sorties on an airborne testbed in Centennial, Colorado in April.
By Inside GNSS
Iridium Communications Inc. received a research and development contract worth up to $30 million from the United States Army to develop a payload to be hosted on small satellites that supports navigation systems, guidance and control for GPS and GPS-denied precision systems.
By Alan Cameron
In a demonstration of new services that NextGen TV can offer, BitPath, CAST.ERA and ONE Media publicly trialed “Enhanced GPS” broadcasts that could provide a tool for autonomous vehicle navigation and other applications.
By Inside GNSS
A new approach to achieving the safety needed for levels 3 and higher of autonomy builds on a thorough mathematical framework to support safety analysis, while delivering very tight position bounds.
A novel method to track Galileo E5 AltBOC signal phase adjusts and then combines the correlation results of the upper sideband and lower sideband signal to form a double-sideband correlation result, which is equivalent to AltBOC wideband receiving to some extent. Thus, a Galileo E5 wideband receiver can be achieved with only minor modification to a traditional GNSS single-sideband receiver. The method can be further applied to other binary offset carrier (BOC) signals.
By Inside GNSS
The Government Accounting Office (GAO) has issued a 51-page report examining the challenges the Department of Defense faces in developing and fielding new positioning, navigation and timing (PNT) technologies to complement, augment or replace GPS when it is unavailable. It found that the DOD is not doing enough in this regard.
By Inside GNSS
South of Stockholm, Sweden, the new Haninge Bus Terminal has been equipped with SubWAVE GPS Coverage Extension from Syntony.
By Inside GNSS
SAM PULLEN, Stanford University
A: Since at least 1997, the Global Positioning System (GPS) Control Segment (CS) has issued what are known as “Notice Advisor(ies) to NAVSTAR Users” or “NANU(s).”
By Inside GNSS
