PNT Archives - Page 38 of 49 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

September 21, 2021

GNSS Foresight Heralds New Direction for Aviation, UAVs, Air Taxis and Entire PNT Industry

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

Smartphone-based GNSS Positioning – Today and Tomorrow

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.

By Inside GNSS

from-a-million-miles-away-nasa-camera-shows-moon-crossing-face-of-earth_20129140980_o_orig

September 20, 2021

The Shielded Zone of the Moon: Protecting Radio Astronomy from RF Interference

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.

By Inside GNSS

New Multipath Rejection Method: Multicorrelator Receiver with Extended Kalman Filter

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.

By Inside GNSS

September 10, 2021

Qualcomm Location Suite Upgrades Support for Emergency Services

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

September 1, 2021

Spirent Federal to Simulate Signals for LEO PNT Firm Xona Space Systems

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

August 27, 2021

Voice-Entry Location Technology Enables Autonomous Delivery

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

August 25, 2021

DHS Successfully Tests GPS-Free PNT Network; Also, the Unreal Engine Plug-In for Gaming & Apps

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

August 20, 2021

For PNT Integration, Timing Is Everything

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

August 19, 2021

Fiber-Optic Gyros Ordered for Remote Weapons Systems

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

August 18, 2021

New Chip-Scale Atomic Clock Targets Military Apps, Remote Sensing

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

August 9, 2021

Real-Time Automated Aerial Refueling with Stereo Vision: Overcoming GNSS-Denied Environments In or Near Combat Areas

In-flight refueling requires sustained minimal separation between paired aircraft with little room for error. In or near combat zones, wide-area GPS-denial or spoofing means that an GPS-independent system must be available. Regardless of the selected sensor package, a common set of properties must be satisfied to facilitate mid-air docking: a high degree of accuracy, precision, and integrity.

By Inside GNSS

August 6, 2021

GNSS Backup eLoran Trialed Using Grandmaster Clock

UrsaNav and ADVA have conducted an enhanced long-range navigation (eLoran) field trial using UrsaNav’s eLoran receiver and ADVA’s Oscilloquartz grandmaster clock technology. The successful demo showed that eLoran offers a robust and reliable backup for GPS and other GNSS and could be used to provide an assured position, navigation, and timing (PNT) service.

By Inside GNSS

PNT

Robotic Cane Offers Indoor Navigation for Visually Impaired Users...

Xona Space Readies for Launch of Its First Commercial PNT Satelli...

GNSS Foresight Heralds New Direction for Aviation, UAVs, Air Taxis and Entire PNT Industry

Smartphone-based GNSS Positioning – Today and Tomorrow

The Shielded Zone of the Moon: Protecting Radio Astronomy from RF Interference

New Multipath Rejection Method: Multicorrelator Receiver with Extended Kalman Filter

Qualcomm Location Suite Upgrades Support for Emergency Services

Spirent Federal to Simulate Signals for LEO PNT Firm Xona Space Systems

Voice-Entry Location Technology Enables Autonomous Delivery

DHS Successfully Tests GPS-Free PNT Network; Also, the Unreal Engine Plug-In for Gaming & Apps

For PNT Integration, Timing Is Everything

Fiber-Optic Gyros Ordered for Remote Weapons Systems

New Chip-Scale Atomic Clock Targets Military Apps, Remote Sensing

Real-Time Automated Aerial Refueling with Stereo Vision: Overcoming GNSS-Denied Environments In or Near Combat Areas

GNSS Backup eLoran Trialed Using Grandmaster Clock