By Inder Jeet Gupta It is well known that the phase center of a GNSS antenna can vary with the satellite direction. This phase center movement leads to aspect dependent carrier phase and code phase...
Photo: Trimble Antenna development, going all the way back to the first antennas, has been one of continuous innovation,” Richard Langley wrote in our September issue. Even after more than 30...
Photo: Trimble Trimble has added capabilities to its real-time network (RTN) portfolio, including the Trimble Pivot Platform and the Trimble Alloy GNSS reference receiver. The new capabilities will...
By Urs Niesen, Jubin Jose, Xinzhou Wu, Qualcomm Technologies Inc. Emerging automotive applications require reliable but at the same time low-cost positioning solutions. In this paper, we present such...
Some ups and downs for unmanned aircraft this month — good news that there is further progress on the pseudo-satellite front, but we also have MIL-SPEC drones lost to shoot-downs and recent crash...
Aeroflex has introduced the GPSG-1000, a portable GPS and Galileo positional simulator. The GPSG-1000 is lightweight and configurable. It fills a gap in the market by providing a low-cost 12-channel...
Autonomous GPS Positioning at High Earth Orbits To initially acquire the GPS signals, a receiver also would have to search quickly through the much larger range of possible Doppler shifts and code...
GNSS positioning is highly accurate and reliable — until satellite signals are disrupted. Hexagon | NovAtel has developed SPAN technology that integrates GNSS positioning with inertial...
James Litton James D. Litton, GPS pioneer and founder of NavCom Technology Inc., died over the weekend at his home in California with his family at his side. He was 89 years old. Litton was an early...
Photo: PCTEL PCTEL Inc. has released an antenna that combines precision multi-constellation GNSS with high-performance LTE, sub-6 GHz 5G, Bluetooth and Wi-Fi connectivity. The Coach II antenna with...
OriginGPS, maker of small-format GNSS modules and cellular internet of things (IoT) systems, presented new products with customized IoT and GPS demonstrations at Embedded World 2019, Nuremberg,...
Dragonfly (Image: CEVA) CEVA Inc. and Nurlink have introduced Nurlink’s NK6010 3GPP Rel.14 eNB-IoT system-on-chip (SoC), powered by the CEVA-Dragonfly NB2 IP solution. The companies made the...
LORD Corporation has released the latest version of its SensorConnect sensing software, featuring significant updates that support sensor management and data collection and visualization for...
NovAtel, part of Hexagon’s Positioning Intelligence division, now brings users greatly improved processing speed and accuracy as well as significantly reduced signal acquisition time through the...
In November, December, and January, a regulatory drama with high potential impact on the GPS signal and domestic U.S. GPS users began unfolding before the Federal Communications Commission (FCC). As...
Improving Single-Frequency RTK in the Urban Enviornment By Mojtaba Bahrami and Marek Ziebart A look at how Doppler measurements can be used to smooth noisy code-based pseudoranges to improve the...
By Wei Liu, Xingqun Zhan, Li Liu, and Mancang Niu A comprehensive methodology combines spectral-separation and code-tracking spectral-sensitivity coefficients to analyze interference among GPS,...
Topcon’s NET-G5 receiver and CR-G5-C antenna. Topcon Positioning Group said that its latest GNSS reference receiver, the NET-G5, is capable of tracking a new signal from the GLONASS...
Two satnav superpowers battled it out aboard a superyacht in the Mediterranean this summer, as a spoofing detector designed to differentiate between real and fake GPS signals came to grips with a...