TAG: jamming

Raytheon, US Air Force upgrade navigation in decoy-jammer vehicle

March 1, 2017By
Raytheon-MALD-J-O

Raytheon Company and the U.S. Air Force validated performance of an upgraded navigation system for the Miniature Air Launched Decoy-Jammer (MALD-J) in six flight tests from B-52 and F-16 aircraft at White Sands Missile Range, New Mexico. The system upgrade, designated as GAINS II (GPS-Aided Inertial Navigation System), includes an enhanced multi-element GPS-controlled antenna assembly. The new technology improves MALD-J... read more

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

Friday is deadline for GPS OEMs to join live-sky spoofing event

March 1, 2017By

Friday is the deadline for GPS manufacturers to apply to test their equipment at a special event with live-sky test scenarios focused on spoofed GPS signals. The Department of Homeland Security (DHS) Science and Technology Directorate (S&T) is offering an opportunity for manufacturers of GPS equipment used in critical infrastructure to test their products against GPS jamming and spoofing. The GPS Testing for... read more

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Research Online: Narrowband interference mitigation, spoofing interference classification

February 27, 2017By
Spectrum of the Adaptive Notch Filter output signal for various interference levels

Get a rundown on two GNSS presentations: one on narrowband interference mitigation and on on spoofing, jamming and multipath interference classification. read more

Innovation: Mitigating interference with a dual-polarized antenna array in a real environment

FIGURE 2. CW interference scenario.

Double Take
A diversely polarized antenna array combines signal processing in the spatial and polarization domains for significant improvement in receiver robustness against interference. The C/N0 of line-of-sight components is improved since the receiver can use the power present in the left-hand circularly polarized channels, and also interference mitigation improves. read more

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Interference mitigated with CRP and dual-polarized antennas: Free webinar

January 30, 2017By
February cover story.

Two new topic areas and presentations have been added to this Thursday’s free webinar on Signal Interference: Detection and Mitigation. The speakers will explore anti-jamming protection with controlled radiation pattern antennas (CRPAs) and with dual-polarized antennas. The latter topic is also the cover story for the February issue, which demonstrated a significant improvement in positioning accuracy and robustness against interference... read more

Iridium constellation provides low-Earth orbit satnav service

January 12, 2017By

A strategic alliance announced on Dec. 15 between Orolia and Satelles includes product development and go-to-market activities of positioning, navigation and timing (PNT) solutions provided by the Iridium satellite constellation, independent of GPS/GNSS signals. The companies intend to provide PNT solutions to military, defense, government and commercial customers worldwide. Orolia, the parent of GNSS-active companies Spectracom and Spectratime, among others,... read more

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Orolia fortifies resilient PNT with Satelles satellite time and location signal

December 15, 2016By
Iridium satellite, courtesy of Iridium.

A strategic alliance announced on Dec. 15 between Orolia and Satelles includes product development and go-to-market activities of positioning, navigation and timing (PNT) solutions provided by the Iridium satellite constellation, independent of GPS/GNSS signals. The companies intend to provide PNT solutions to military, defense, government and commercial customers worldwide. Orolia, the parent of GNSS-active companies Spectracom and Spectratime, among others,... read more

Poll: Experiences with jamming, spoofing and RF interference

November 14, 2016By
jimi-purple-haze

Not with Purple Haze, but with signal interference — although, come to think of it, the two may be not unalike, phenomenologically. The October reader’s poll asked “Have you directly experienced any of the following? Check all that apply. GPS/GNSS jamming. GPS/GNSS spoofing. Unintentional RF interference. RF interference from unknown source; unknown whether intentional or not. None of the above.... read more

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