Global Navigation Satellite Systems Engineering, Policy, and Design
Galileo satellites 5 and 6 (E18, E14) were declared unusable in February 2021 after reports indicating repeatable daily problems with RTK. This article explores the possible impact of deviant elliptical orbits on the performance of RTK and finds that there is no reason to expect any anomalies caused by high orbit eccentricity per se. Thus there is no reason to declare the satellites unhealthy.
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
The U.S. Space Force’s Space Systems Command recently declared the eighth GPS III satellite as “Available for Launch.” This marks the third GPS III satellite to be declared available for launch in the past three months.
By Inside GNSS
Orolia received two contracts to provide atomic clocks for the first 12 satellites of the Galileo Second Generation System (G2S).
By Inside GNSS
Tallysman Wireless Inc. has added its first full-band GNSS antenna to its line of helical antennas. The HC990E embedded helical antenna is designed for precise positioning, covering the GPS/QZSS-L1/L2/L5, QZSS-L6, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b/E6, BeiDou-B1/B2/B2a/B3, and NavIC-L5 frequency bands
By Inside GNSS
Telit launched the SE150A4 system on module series for retail and POS devices, incorporating an embedded multi-constellation GNSS (GPS, BeiDou, GLONASS and Galileo) receiver for high-performance positioning and navigation.
By Inside GNSS
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
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
In a robust return to live technical conferences, the 2021 Joint Navigation Conference (JNC 2021) drew strong attendance and lively, productive conversations on the show floor.
By Inside GNSS
BAE Systems, Inc. unveiled its ultra-small MicroGRAM-M GPS receiver compatible with next-generation M-Code military GPS signals that are resistant to jamming and spoofing.
By Inside GNSS
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
The Defense Innovation Unit (DIU) of the Department of Defense (DoD) sought in mid-August commercial solutions to counter growing GNSS spoofing operations.
By Inside GNSS
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
