| Autor: |
LIU Puyu, ZOU Xihua, LI Yang, YAN Lianshan, PAN Wei |
| Jazyk: |
English<br />Chinese |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Leida xuebao, Vol 8, Iss 2, Pp 197-204 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2095-283X |
| DOI: |
10.12000/JR19015?viewType=HTML |
| Popis: |
In this study, we designed and demonstrated the performance of a multi-antenna remote differential monitoring system based on a single GNSS-over-fiber architecture. In this system, multiple GNSS signals are received by remote antennas through a microwave photonic link and are then transmitted to local end points. To enable fine positioning, we established a double differential model equation for use between the carrier phase of each remotely received signal and the reference GNSS signal, with the help of the time division mode using a high-speed optical switch. In our experiment, we established a 10 km microwave photonic link among three remote monitoring points. We estimate the resulting positioning accuracy to be within several millimeters and we obtained a response time of less than 10 ms. Compared with traditional single-antenna schemes, our designed system has significant advantages with respect to coverage area, real-time response time, and the performance cost of large-scale monitoring at no cost to the positioning accuracy. As such, this system will find important applications for the monitoring of large-scale civil engineering and natural environments. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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