GNSS (all systems) Archives - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

GNSS (all systems)

December 21, 2021

Galileo OS Service Definition Doc Chronicles System Upgrades since 2019

The latest version of the Galileo Open Service Definition Document (OS SDD), updated November 2021, describes upgrades enacted in the Galileo system since May 2019: improvements, current constellation status and updates in the ground infrastructure that increase its robustness. This is the last update foreseen before Galileo Open Service reaches Full Operational Capability (FOC).

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By Inside GNSS

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December 15, 2021

Galileo Grows by Two

A Soyuz launcher operated by Arianespace and commissioned by ESA lifted off with the pair of 715 kg satellites from French Guiana on December 5. The two join 26 Galileo satellites in the orbiting constellation that now provide Initial Services.

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By Inside GNSS
December 13, 2021

Fast and Furious: The Keys to High-Dynamic Positioning

Rapidly changing motion means that every aspect of positioning must be carefully re-examined and re-evaluated to avoid costly and dangerous positioning errors. The frequent changes in heading, acceleration and deceleration inherent in rockets, missiles, jet planes, race cars and other platforms — up to 100 times per second! —  dictate a very high rate of data inputs from both inertial and GNSS sensors to capture the complex trajectory.

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By Inside GNSS

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December 2, 2021

BeiDou Conducts Laser Communication Experiment, Steps Ahead of U.S. — Could Improve SatNav Accuracy

In a race with the U.S. to develop a laser communications network in space, China’s BeiDou GNSS has conducted an inter-satellite and satellite-ground station experiment using using lasers rather than the usual radio signals. The technology could potentially transmit data a million times faster than by radio signal to almost any location. Some experts say it could increase satnav accuracy by a factor of 6 to 40

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By Inside GNSS
November 30, 2021

Energy-Efficiency Considerations For GNSS Signal Acquisition

Future miniaturized sensors, to be used for example in bee-sized drones, mini-satellites, or wearable devices, are likely to include GNSS chipsets supporting accurate outdoor localization and also offering reduced computational costs and power consumption compared to traditional GNSS receivers. The survey various energy-efficient methods for GNSS acquisition and present a discontinuous-reception acquisition algorithm, analyzed with both simulated and measurement-based data.

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By Inside GNSS

Russia Explodes Own Satellite with Ground-Based Missile; Spokesperson Threatens GPS

Russia conducted an unannounced direct-ascent anti-satellite (DA-ASAT) missile test on November 15, targeting and exploding its own defunct satellite Tselina-D. After the test, Russian television executive and spokesperson Dmitry Konstantinovich Kiselyov, head of the official Russian government-owned international news agency Rossiya Segodnya, reportedly said on live tv that this demonstrated that Russia could and would if necessary target U.S. GPS satellites, thus “blinding” its military forces.

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By Inside GNSS

High-Precision A-PNT Card Aligned to Army CMOSS and SOSA Technical Standard

Spectranetix, Inc. has released its SX-124, ruggedized 3U OpenVPX high-performance position, navigation and timing (PNT) solution. With an ability to provide timing and positioning information in a GPS-denied environment through sensor fusion, the SX‑124 switch is a highly integrated next-generation cyber / electronic warfare (EW) / Signals intelligence (SIGINT)  / Communications / Battle Management System (BMS) device

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By Inside GNSS
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