New services and signals of the Galileo navigation system (Has, UNMA)
Nové služby a signály navigačního systému Galileo (HAS, OSNMA)
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České vysoké učení technické v Praze
Czech Technical University in Prague
Czech Technical University in Prague
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Táto bakalárska práca sa zaoberá analýzou dvoch nových služieb globálneho navigačného systému Galileo, ktorými sú High Accuracy Service (HAS) a Open Service Navigation Message Authentication (OSNMA), pričom služba HAS je aj prakticky overená. Teoretická časť sa zameriava na architektúru systému Galileo. Vysvetľuje fungovanie služieb HAS a OSNMA a analyzuje štruktúru a spracovanie ich dát. Služba OSNMA prináša kryptografickú autentifikáciu navigačných správ, ktorá chráni používateľa pred podvrhnutými GNSS signálmi. HAS poskytuje korekcie obežných dráh, hodín a kódových oneskorení, čím umožňuje zvýšiť presnosť určovania polohy pomocou metódy Precise Point Positioning (PPP). Praktická časť práce je venovaná získavaniu korekčných dát služby HAS prostredníctvom služby Internet Data Distribution (IDD), ich aplikácii a vyhodnoteniu toho, do akej miery prispievajú k zvýšeniu presnosti určovania polohy.
This bachelor's thesis focuses on the analysis of two new services of the Galileo Global Navigation Satellite System: High Accuracy Service (HAS) and Open Service Navigation Message Authentication (OSNMA). The HAS service is also practically evaluated within the thesis. The theoretical part describes the architecture of the Galileo system. It explains the functioning of the HAS and OSNMA services and analyzes the structure and processing of their data. The OSNMA service provides cryptographic authentication of navigation messages, which protects users from spoofed GNSS signals. HAS delivers corrections of satellite orbits, clocks, and code biases, enabling improved positioning accuracy through the Precise Point Positioning (PPP) method. The practical part of the thesis focuses on acquiring correction data from the HAS service via the Internet Data Distribution (IDD) service, applying this data, and evaluating how much it contributes to improving positioning accuracy.
This bachelor's thesis focuses on the analysis of two new services of the Galileo Global Navigation Satellite System: High Accuracy Service (HAS) and Open Service Navigation Message Authentication (OSNMA). The HAS service is also practically evaluated within the thesis. The theoretical part describes the architecture of the Galileo system. It explains the functioning of the HAS and OSNMA services and analyzes the structure and processing of their data. The OSNMA service provides cryptographic authentication of navigation messages, which protects users from spoofed GNSS signals. HAS delivers corrections of satellite orbits, clocks, and code biases, enabling improved positioning accuracy through the Precise Point Positioning (PPP) method. The practical part of the thesis focuses on acquiring correction data from the HAS service via the Internet Data Distribution (IDD) service, applying this data, and evaluating how much it contributes to improving positioning accuracy.