Preliminary Results of an Astri/UWM EGNSS Receiver Antenna Calibration Facility
| Autor: | Tomasz Grzegory, Karol Brzostowski, Katarzyna Stepniak, Joanna Janicka, Jacek Rapiński, Paweł Gołaszewski, Pawel Wielgosz, Dariusz Tomaszewski, Grec Florin-Catalin, Wojciech Jarmołowski, Bogdan Wolak, Karol Dawidowicz, Radosław Baryła, Grzegorz Krzan, Dawid Kwaśniak, Michał Śmieja |
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| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
Calibration (statistics) Computer science Satellite system TP1-1185 010502 geochemistry & geophysics 01 natural sciences Biochemistry Article Analytical Chemistry Phase center Electrical and Electronic Engineering Instrumentation Simulation 0105 earth and related environmental sciences GNSS PCC business.industry Chemical technology antenna calibration Atomic and Molecular Physics and Optics GNSS applications Global Positioning System Satellite Antenna (radio) business Robotic arm |
| Zdroj: | Sensors (Basel, Switzerland) Sensors Volume 21 Issue 14 Sensors, Vol 21, Iss 4639, p 4639 (2021) |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s21144639 |
| Popis: | In 2019, the University of Warmia and Mazury in Olsztyn, in cooperation with Astri Polska, started a European Space Agency (ESA) project. The purpose of the project is the development and implementation of a field calibration procedure for a multi-frequency and multi-system global navigation satellite system (GNSS). The methodology and algorithms proposed in the project are inspired by the “Hannover” concept of absolute field receiver antenna calibration however, some innovations are introduced. In our approach, the antenna rotation point is close to the nominal mean phase center (MPC) of the antenna, although it does not coincide with it. Additionally, a National Marine Electronics Association local time zone (NMEA ZDA) message is used to synchronize the robot with the GNSS time. We also propose some modifications in robot arm movement scenarios. Our first test results demonstrate consistent performance for the calibration strategy and calibration procedure. For the global positioning system (GPS) L1 frequency, the calibration results show good agreement with the IGS-type mean values. For high satellite elevations (20°–90°), the differences do not exceed 1.5 mm. For low elevation angles (0°–20°), the consistency of the results is worse and the differences exceed a 3 mm level in some cases. |
| Databáze: | OpenAIRE |
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