Septentrio Resilient GNSS Receiver Sets New Benchmark in High-Precision Ionospheric Monitoring and Positioning

In the field of Global Navigation Satellite System(GNSS) technology, Septentrio has always led the industry with outstanding performance and innovative technologies. The recent research published in an international authoritative journal,”Comparison of TEC Calculation Based on Trimble, Javad, Leica and Septentrio GNSS Receiver Data”, has verified the significant advantages of Septentrio receiver in the field of ionospheric monitoring through scientific experiments, setting a new benchmark for high-precision positioning technology.

This study, by comparing the phase noise performance of four major brand receivers(Javad DELTA,Trimble NetR9,Leica GR10 and Septentrio POLARX5S resilient GNSS receiver) in the L1/L2 frequency bands, found that Septentrio POLARX5S demonstrated unparalleled signal purity. The standard deviation(σ)of its phase noise in the L1 and L2 frequency bands was as low as 0.0015 cycles and 0.0017 cycles respectively, significantly outperforming other competing products – the phase noise of Javad was 3-5 times higher, and Leica even showed exceptionally high noise in the L1 frequency band. This ultra-low noise characteristic enables the Septentrio receiver to have a noise component of only 0.0025 TECU(Total Electron Content Unit) when calculating the Total Electron Content of the ionosphere(Slant TEC), which is 80% lower than that of Javad, providing sub-millimeter measurement sensitivity for detecting tiny ionospheric disturbances.

The experimental data further reveal the unique signal processing architecture of Septentrio Resilient GNSS receiver: The correlation coefficient of phase noise(RL1,L2) in the L1 and L2P frequency bands is stable within the range of 0.5-0.7, indicating that it adopts an independently innovative cross-correlation tracking technology. While ensuring the rapid relocking of the L2P signal, it avoids the jamming of the traditional L1-assisted tracking technology on ionospheric measurements. This design philosophy enables the Septentrio receiver to cope with complex electromagnetic environments and guarantees the physical authenticity of scientific research-level data, making it the preferred equipment for global ionospheric monitoring stations.

The technological advantages of Septentrio Anti Jamming GNSS have been transformed into extensive industrial application values. In the field of earthquake monitoring, its sub-nanosecond time synchronization capability can accurately capture millimeter-level displacements of tectonic plates; in precision agriculture, self-driving agricultural machinery equipped with mosaic-X5 resilient GNSS board can achieve±2cm inter-ridge navigation; and in the field of transportation, the intelligent connected vehicle-road coordination system based on mosaic-H resilient GNSS board can compress the positioning delay to within 5ms through a multi-frequency anti-multipath algorithm.

It is particularly worth noting that the Mosaic-X5 resilient GNSS board features innovative positioning and orientation integrated modules. This solution, through multi-antenna collaborative calculation, synchronously outputs position, heading and attitude data in a single compact device. The heading accuracy reaches 0.05°, perfectly adapting to high-dynamic scenarios such as automatic ship berthing and construction machinery control. Its unique Signal Quality Monitoring(SQM) function can visually display more than 20-dimensional parameters such as the carrier-to-noise ratio and multipath error of each satellite signal in real time, providing in-depth diagnostic capabilities for system integrators.

As a long-term partner of the European Space Agency(ESA), Septentrio has been continuously pushing the boundaries of GNSS technology innovation. The latest developed GNSS+ multi-sensor fusion platform deeply integrates inertial navigation(IMU), visual odometry and satellite signals through deep learning algorithms, and can still maintain centimeter-level positioning accuracy for more than 180 seconds even in fully occluded environments such as tunnels. This technological forward-lookingness is redefining the application possibilities of high-precision positioning in fields such as smart cities and space exploration.

From ionosphere research to industrial-level high-precision positioning, Septentrio receiver has always forged technological edges with an empirical spirit. When the industry is still chasing parameter indicators, Septentrio Anti Jamming GNSS has built a complete technological ecosystem ranging from chip-level anti-jamming, multi-band signal processing to full-scenario solutions. Choosing Septentrio is not only choosing a set of GNSS equipment, but also choosing a commitment to positioning reliability for the future.

Keywords: Septentrio receiver, Resilient GNSS receiver, mosaic-X5 resilient GNSS board, Anti Jamming GNSS, Septentrio POLARX5S resilient GNSS receiver, mosaic-H resilient GNSS board, Septentrio Anti Jamming GNSS

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