TAG: eLoran

Name the alt-PNT leader for a $50 gift card

February 13, 2017By
luwak

Quick, what’s the best alternative when GNSS signals are not available? This is not a simple question, but we’re asking for a simple answer. Among the multiple avenues pursued at the U.S. Defense Advanced Research Projects Agency (DARPA), as described in February’s PNT Roundup, which has the most promise? Inertial sensors Chip-scale atomic clocks Cell signals Low-Earth orbit communications satellites... read more

Wildwood eLoran transmitter starts broadcasting Feb. 6

February 2, 2017By

Update (2/9/17): The Wildwood transmitter is back on the air after a presumed lightning strike affected transmissions. The transmitter stopped broadcasting at 5:35 a.m. EST on Feb. 9. Testing took place 5:35 a.m. to  8:19 EST, after which it came back on the air, reports Steve Bartlett, vice president of operations for UrsaNav Inc. The transmitter will be taken off... read more

This article is tagged with , , and posted in GNSS, Latest News, OEM

FAA releases National Airspace System Navigation Strategy

November 10, 2016By
pnt_nas-navigation-strategy-faa-2016

The United States Federal Aviation Administration (FAA) has released its Performance-Based Navigation (PBN) National Airspace System (NAS) Navigation Strategy 2016, the result of a concerted year-long effort by FAA and aviation industry stakeholders. It describes how the FAA intends to transition U.S. NAS operations over the near- (2016–2020), mid- (2021–2025) and far-term (2025–2030) from predominantly point-to-point navigation, reliant on hundreds... read more

Spectracom adds resiliency for military communications system

July 25, 2016By

Secondary receiver uses eLoran to back up GPS time Spectracom has been selected to provide Interference, Detection and Mitigation (IDM) capability to its SecureSync precision time and frequency reference system to support Rohde & Schwarz Benelux B.V. and the Netherlands Ministry of Defence for secure long-range military communications systems. The upgrade, which is based on a secondary receiver that extracts... read more

This article is tagged with , , , , , and posted in Defense, Latest News

South Korea to build eLoran system after jamming incident

May 3, 2016By
SouthKorea-Seoul

South Korea will award a contract this month to secure technology required to build an eLoran system as an alternative to GPS, reports the Australian Broadcasting Company (ABC). The announcement follows South Korea pointing the finger at North Korea for jamming its GPS signal reception in late March. The South Korean eLoran plan envisions setting up coastal transmitters by the end... read more

This article is tagged with , , , and posted in Featured Stories, GNSS, Latest News

GNSS has bad days, too

April 27, 2016By
(courtesy Ursanav)

“Even the best technology has a bad day,” Charles Schue told the New York Stock Exchange (NYSE), which relies very heavily on the best technology to keep the world’s financial edifice afloat. Vulnerabilities in the stock market were pointed up during a demonstration on April 19, showcasing how one positioning, navigation and timing (PNT) system can cover the chinks in... read more

This article is tagged with , , , , , , and posted in GNSS, Opinions

PNT Roundup: Taviga collaboration, leap second reconsidered and drone rules

January 12, 2016By
eLoran Antenna Park of 13 200-meter masts at Anthorn, UK.

eLoran New joint venture to ensure, assure secure PNT The founders of Chronos and UrsaNav have formed a new collaboration, named Taviga, that will focus on preserving and establishing low-frequency (LF) positioning, navigation and timing (PNT) networks in the United Kingdom, Europe and the U.S., using repurposed Loran-C or purpose-built eLoran technology. Taviga aims to ensure timing and navigation for... read more

This article is tagged with , , , , , , , and posted in From the Magazine, GNSS, UAV/UGV

Out in Front: Resilient navigation and timing

January 11, 2016By
space-map-satellites-esri-F

Advocacy in the U.S. capital urges augmentation of GPS/GNSS with eLoran and other “complementary terrestrial PNT services to increase resilience.” See the Resilient Navigation and Timing Foundation’s website, rntfnd.org. This is assuredly a good thing, a worthy cause. I’ve come to believe, however, that true resilience goes beyond what we normally think of as position and timing sensors. Stimulus comes... read more