Global Navigation Satellite Systems Engineering, Policy, and Design
A robotic cane integrating a color 3D camera, an inertial measurement unit (IMU) and an on-board computer offers indoor navigation assistance to blind and visually impaired users.
By Inside GNSS
Xona Space Systems announced that completion of a new funding round will support the company’s first orbital mission, scheduled for mid-2022, to demonstrate the capabilities of its Pulsar precision low-Earth orbit (LEO) PNT service, an independent high-performance satellite navigation and timing system designed to meet the needs of intelligent systems.
By Inside GNSS
Spirent Communications has launched GNSS Foresight, a cloud-based solution that empowers GNSS users with advance knowledge about the strength and reliability of GNSS signals in exact locations within their operational areas. The service will have early application for aviation, unmanned and autonomous platforms, but Spirent VP Jeremy Bennington told Inside GNSS that its potential is far wider.
By Inside GNSS
This article reviews some of the recent results analyzing the feasibility of carrier-phase based positioning with smartphone data and highlights limitations largely arising due to the poor antenna quality. It shows how they might be overcome by antenna calibration or coupling to the phone’s inertial sensors. The goal is to perform a successful RTK positioning with the smartphone-quality data.
Discussions about spectrum allocation, familiar to GNSS designers and manufacturers on Earth, are now taking place regarding the lunar environment. ITU Radio Regulations constitute an international treaty governing all radio frequency activities. This article shows that GNSS operators in this region must transmit signals in the GNSS S-band rather than in GNSS L-bands.
A new method for multipath rejection employs a multicorrelator-based GNSS receiver with an extended Kalman Filter (EKF) as an iterative solver, replacing the conventional delay locked loop (DLL) code tracking. The technique significantly reduces the positioning error and has low complexity. It can therefore be implemented in a real-time processing environment.
To comply with Federal Communications Commission (FCC) E-911 regulations, Qualcomm Technologies has enhanced the capabilities of the Qualcomm Location Suite to provide improved horizontal and vertical positioning information.
By Inside GNSS
Spirent Federal Systems announced a collaboration with Xona Space Systems to develop simulation and test capabilities for Xona signals produced by small satellites operating in low-Earth orbit (LEO).
By Inside GNSS
The parent company of retail giant Ikea put nearly $16.5 million into location technology from What3words to improve urban deliveries in cities. The What3words solution is also expected to provide accuracy for new delivery by drones and autonomous vehicles.
By Inside GNSS
NextNav announced that it has successfully demonstrated the timing precision and resilience of its terrestrial position, navigation, and timing (PNT) system, TerraPoiNT, in a recent evaluation by the Science & Technology Directorate (S&T) of the Department of Homeland Security (DHS).
By Inside GNSS
GPS + inertial + camera + LiDAR + baro-altimeter = a very precise measurement, right? Not when the respective sensor output timings lack proper synchronization. Only when each piece of data carries an accurate timetag can they together enable optimal performance in multi-sensor fusion systems.
By Inside GNSS
KVH Industries received a $7.9 million fiber optic gyro (FOG) order from Escribano, a Spanish defense contractor, for its new Guardian 30 remotely controlled turret.
By Inside GNSS
Microchip Technology Inc. has released the SA65 chip-scale atomic clock (CSAC) for precise timing accuracy and stability in extreme environments. The product is designed primarily for advanced military platforms, ocean-bottom survey systems and remote sensing applications.
By Inside GNSS
