Global Navigation Satellite Systems Engineering, Policy, and Design
Hexagon introduced a news survey-grade GNSS RTK rover with visual positioning at the InterGeo expo in Berlin. Designed for surveying professionals to measure points which previously could not be measured with a GNSS rover easily and accurately, the Leica GS18 I captures the site in images and measures points from them, either in the field or later in the office.
By Inside GNSS
Fixposition announced its new Vision-RTK positioning sensor, a compact centimeter-accurate solution with high reliability and availability in GNSS-challenged environments, at the Intergeo Digital event and industrial exposition. The sensor’s fusion algorithm deeply integrates satellite, camera and inertial sensors for reliability and availability in diverse and challenging applications.
By Inside GNSS
Septentrio has expanded its GPS/GNSS OEM portfolio its latest high-precision GNSS receiver, the AsteRx-m3 in both base and rover formats. The new AsteRx-m3 family features GPS/GNSS OEM boards optimized for power consumption and ease of integration, with advanced anti-jamming algorithms.
By Inside GNSS
Low-noise MEMS inertial sensor and systems technology coupled with VELOX high-speed processing are integrated with a 72-channel GNSS receiver from Gladiator Technologies. The devices deliver position accuracy within 2 nautical miles per hour during GPS outages.
By Inside GNSS
Collins Aerospace received a program-of-record contract to mature and integrate a positioning, navigation and timing system for the U.S. Army’s for the Army’s increasingly sophisticated manned ground vehicles. The Mounted Assured Position Navigation and Timing System (MAPS) will maintain the integrity of positioning and timing during operations in GPS-contested environments.
By Inside GNSS
Research has focused on methods to analytically determine bounding probability distributions and parameters and identify the conditions under which such bounds are guaranteed to hold. This column summarizes several important examples from this research to highlight the most useful principles and techniques.
By Sam Pullen
As a significant number of people and robotics venture into space, infrastructures providing critical services such as GNSS must be considered on a large extra-terrestrial scale to support these explorations and settlements.
By Inside GNSS
Laboratory tests explore how commercially available receivers respond to meaconing and spoofing, with the goal of developing useful test methodologies and metrics to assess receiver robustness and resilience to real-world spoofing threats.
A new GNSS receiver for mobile consumer products uses only the modernized, wideband signals at L5, with an acquisition engine to acquire the signals directly and a navigation engine employing artificial intelligence techniques to fully exploit all the signals in L5’s 50MHz-wide band.
By Greg Turetzky and Paul McBurney, oneNav
By Inside GNSS
The fifth GPS III satellite rising in 2021 will ride aboard a previously used Falcon 9 first-stage booster, in a first for a National Security Space Launch mission. Space Exploration Technologies Corporation (SpaceX) has contracted with the U.S. Space Force’s Space and Missile Systems Center Launch Enterprise to reuse the booster rockets.
By Inside GNSS
Orolia Defense & Security has received security approval from SMC Production Corps (Space and Missile Command’s Production Corps, located at Los Angeles Air Force Base in El Segundo, California) for its BroadSim MNSA (Modernized Navstar Security Algorithm), a software-defined GNSS simulator.
By Inside GNSS
There are interesting tradeoffs to consider in placing navigation satellites at various orbital heights, including signal power, availability, cost, orbit prediction, receiver computational load and manufacturer motivation.
By Inside GNSS
