A Multi-antenna GNSS-over-fiber System with High Vertical Precision

被引：0

作者：

Jiang, Xin ^{[1
]}

Wang, Xiangchuan ^{[1
]}

Pan, Shilong ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Minist Educ, Key Lab Radar Imaging & Microwave Photon, Nanjing 210016, Jiangsu, Peoples R China

来源：

2018 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) | 2018年

基金：

中国国家自然科学基金;

关键词：

global navigation satellite system; radio over fiber; delay measurement; line bias delay; carrier phase single difference; vertical precision; GPS; SINGLE; BDS;

D O I：

暂无

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel multi-antenna global navigation satellite system over fiber (GNSS-over-fiber) system with real-time microwave-photonics-based fiber-length-difference monitoring is proposed. In the architecture, GNSS signal transmission from two or more remote antennas to the local processing center is realized based on radio-over-fiber techniques. A novel microwave-photonics-based fiber length measurement scheme is applied to compensate the line bias delay between different GNSS channels due to the fiber-length variation. Then the carrier phase single difference (SD) algorithm, instead of the carrier phase double difference (DD) algorithm, can be used to improve the vertical precision of multi-antenna GNSS system. Experimental results show that the vertical positioning precision with SD algorithm is about 1.3 mm which is 3.15 times better than that with DD algorithm. Meanwhile, the horizontal positioning precision is about 1.5 mm which is on the same level compared with the system with DD algorithm.

引用

页数：4

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