Space weather disruptions to satellite navigation and telecommunications: ionospheric scintillation

GSTDTAP

项目编号	NE/R009082/1
	Space weather disruptions to satellite navigation and telecommunications: ionospheric scintillation
	Biagio Forte
主持机构	University of Bath
项目开始年	2017
	2017-11-14
项目结束日期	2018-11-13
资助机构	UK-NERC
项目类别	Research Grant
项目经费	101894(GBP)
国家	英国
语种	英语
英文摘要	The modern world is increasing reliant on systems that make use of Global Navigation Satellite Systems (GNSS), perhaps the most well know of which is GPS. These include the 'Satnav' in cars or mobile phones. However, in addition to its use in transport (road, air, rail and maritime), GNSS is used a wide range of other applications including surveying, emergency services, agriculture, mobile communications and financial transactions. In a 2011 report from the Commission to the European Parliament and the Council it was estimated that 800 billion euro of gross domestic product (GDP) in the European Union, was then dependent on satellite radio navigation. A Royal Academy of Engineering report of the same year suggested that Services that depend on GNSS for positioning, navigation or timing (PNT), either directly or indirectly, "should document this as part of their service descriptions and explain their contingency plans for GNSS outages". We will provide, to our partners, global maps of risk of such outages, caused by ionospheric scintillation, a major result of space-weather affecting the ionosphere. Scintillation is where there are such rapid changes in the radio signal from a GNSS satellite that a receiver cannot 'lock on' to the signal and so cannot use this signal for navigation or timing. Scintillation is common at both high and low latitudes, but can on occasions extend to middle latitudes such as the UK, Europe and the United States. For example, during the 'Halloween' solar storm in October 2003, the United States Federal Aviation Administration Wide-Area Augmentation System (WAAS) network for air navigation was disabled for 30 hours, primarily due to scintillation. Our work is timely as the use of GNSS is so ubiquitous that a recent (June 2017) Innovate UK report estimated that the impact in the UK alone to a five-day disruption to GNSS would be in excess of £5 billion through direct losses and knock-on delays caused. £110 million of this was in the railector, an area of particular interest to our project partners. https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/619544/17.3254_Economic_impact_to_UK_of_a_disruption_to_GNSS_-_Full_Report.pdf http://lasp.colorado.edu/home/wp-content/uploads/2011/07/lowres-Severe-Space-Weather-FINAL.pdf http://www.raeng.org.uk/publications/reports/global-navigation-space-systems
来源学科分类	Natural Environment Research
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/86910
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Biagio Forte.Space weather disruptions to satellite navigation and telecommunications: ionospheric scintillation.2017.