Uncertainties in the International Situation Are on the Increase and Transformation of International Pattern and Order Accelerates and Deepens Since 2016,the world has begun to enter into a historical period of uncert...Uncertainties in the International Situation Are on the Increase and Transformation of International Pattern and Order Accelerates and Deepens Since 2016,the world has begun to enter into a historical period of uncertainty.The fact that the Ukrainian Crisis has dragged on for long and that展开更多
This paper reviews the status of satellite navigation(as per 11 May 2020)-without claim for completeness-and discusses the various global navigation satellite systems,regional satellite navigation systems and satellit...This paper reviews the status of satellite navigation(as per 11 May 2020)-without claim for completeness-and discusses the various global navigation satellite systems,regional satellite navigation systems and satellite-based augmentation systems.Problems and challenges for delivering nowadays a safe and reliable navigation are discussed.New opportunities,perspectives and megatrends of satellite navigation are outlined.Some remarks are closing this paper emphasizing the great value of satellite navigation at present and in future.展开更多
文摘Uncertainties in the International Situation Are on the Increase and Transformation of International Pattern and Order Accelerates and Deepens Since 2016,the world has begun to enter into a historical period of uncertainty.The fact that the Ukrainian Crisis has dragged on for long and that
文摘This paper reviews the status of satellite navigation(as per 11 May 2020)-without claim for completeness-and discusses the various global navigation satellite systems,regional satellite navigation systems and satellite-based augmentation systems.Problems and challenges for delivering nowadays a safe and reliable navigation are discussed.New opportunities,perspectives and megatrends of satellite navigation are outlined.Some remarks are closing this paper emphasizing the great value of satellite navigation at present and in future.