TAG: PNT

Networking for assisted PNT

July 8, 2016By
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A networked radio from Thales is designed to meet soldiers’ need for assured positioning, navigation and timing (PNT) while on foot. The MBITR2 is part of a broader defense effort to provide PNT solutions in case of GPS jamming or interference. The MBITR2 is one of a number of devices and technologies, many still in development, to address this need.... read more

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User location data could support satellite launches

June 23, 2016By
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Let’s look through the other end of the telescope this month. The satellites are nattering along, lining up in orderly fashion at the rocket pad, extending their solar arms smoothly in space once they arrive on orbit. The constellations accrue and new signals inch closer to maturity. The only blips on the horizon come from Ligado’s terrestrial impulse and a... read more

Expert Opinions: UAV PNT commercial requirements

June 13, 2016By

Q: What different requirements for UAV PNT performance will be seen as the market shifts from a military focus to commercial uses and users? A: PNT accuracy, availability and assurance will increase in importance. UAV payloads for military applications routinely require precise PNT information to geolocate sensor data for intelligence, surveillance and reconnaissance missions. High-end commercial applications for survey and... read more

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Iridium and GPS revisited: A new PNT solution on the horizon?

June 8, 2016By
Replica of Iridium satellite. (Photo courtesy of Iridium)

How many times have you heard of a nearly 20-year-old space constellation being modified with a new technology? It almost never happens. Get the details on Iridium's new Satellite Time and Location System. read more

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GNSS jam-proof test range ready for customer testing

May 25, 2016By
Locatalite transceiver installation in the White Sands Missile Range Ultra High-Accuracy Reference System, provided by the U.S. Air Force for testing equipment under conditions of GPS jamming.

A new dimension in real-world PNT testing has arrived. One of the most critical things to predict for chips, receivers and devices using alternative or back-up PNT technologies is how they will actually perform without GPS. Filling this need, the U.S. Air Force 746th Test Squadron has declared Initial Operational Capability (IOC) for its new truth reference, the Ultra High-Accuracy... read more

Air Force jam-proof reference system ready to support testing

May 24, 2016By
Locatalite transceiver installation in the White Sands Missile Range Ultra High-Accuracy Reference System, provided by the U.S. Air Force for testing equipment under conditions of GPS jamming.

The U.S. Air Force 746th Test Squadron has declared Initial Operational Capability (IOC) for its new truth reference, the Ultra High-Accuracy Reference System (UHARS), which employs LocataLite transceivers. Even when GPS is being completely jammed, UHARS provides extremely accurate positioning, navigation and time (PNT) over the large area of White Sands Missile Range (WSMR) in New Mexico that the system was designed to cover.... read more

Iridium launches alternative GPS PNT service

May 23, 2016By

Iridium Communications Inc. has introduced its Satellite Time and Location (STL) service, an alternative or complement to traditional indoor and outdoor location-based technologies, and declared it ready for use. STL’s position, navigation and timing (PNT) technology is deployed through Iridium’s 66 cross-linked, low-earth orbit satellite constellation. Through Iridium satellites and in GNSS receivers, STL technology can work to verify GPS, GLONASS, Galileo and... read more

In defense of PNT: Multi-GNSS to the rescue

May 11, 2016By
An artist's concept of a GPS IIR-M satellite in orbit (courtesy of Lockheed Martin).

For more than 41 years, many of us who were there in the beginning have been discussing the attributes, capabilities, enabling features and shortcomings of GPS and other space-based PNT (position, navigation and timing) systems. You have likely heard most of them; historically they go something like this: The signal is weak. The signal is easily jammed. The signal can be... read more