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SJ-9A/B Satellites Conduct Key Technology Tests
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作者 Jiang Xueying 《Aerospace China》 2012年第4期9-10,共2页
On October 14, two satellites SJ-9A/B were sent into their preset orbits by a LM-2C/SMA launch vehicle, which is the first flight of a series of China's civilian technology experimental satellites. SJ-9A and B are... On October 14, two satellites SJ-9A/B were sent into their preset orbits by a LM-2C/SMA launch vehicle, which is the first flight of a series of China's civilian technology experimental satellites. SJ-9A and B are the first two satellites in the series of civilian technology experimental satellites designed for tests such as long lifetime and high reliability, high precision and high performance of satellite, domestically developed core components, satellite formation 展开更多
关键词 HIGH SJ-9A/B satellites Conduct Key technology Tests DFH
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LM-3B Successfully Launched Communications Technology Test Satellite 2
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作者 GUO Qian 《Aerospace China》 2017年第1期58-58,共1页
At 23:18 Beijing time on January 5,a LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center,sending a communication technology test satellite into its preset orbit.This successful launch was a good s... At 23:18 Beijing time on January 5,a LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center,sending a communication technology test satellite into its preset orbit.This successful launch was a good start for China’s launch missions in 2017.The Communications Technology Test Satellite 2 was developed by the Shanghai Academy of Spaceflight Technology.It is a next-generation telecom- 展开更多
关键词 LM-3B Successfully Launched Communications technology Test satellite 2 TEST DATA
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Applications of Satellite Remote Sensing Technology in China's Environmental Monitoring
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作者 Zong He 《Aerospace China》 2011年第2期6-9,共4页
The environmental conditions in China are still very serious. In the years to come, the mission for environmental treatment and protection, supervision,
关键词 Applications of satellite Remote Sensing technology in China’s Environmental Monitoring
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Spatio Temporal Tourism Tracking System Based on Adaptive Convolutional Neural Network
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作者 L.Maria Michael Visuwasam D.Paul Raj 《Computer Systems Science & Engineering》 SCIE EI 2023年第6期2435-2446,共12页
Technological developments create a lot of impacts in the tourism industry.Emerging big data technologies and programs generate opportunities to enhance the strategy and results for transport security.However,there is... Technological developments create a lot of impacts in the tourism industry.Emerging big data technologies and programs generate opportunities to enhance the strategy and results for transport security.However,there is a difference between technological advances and their integration into the methods of tourism study.The rising popularity of Freycinet National Park led to a master plan that would not address cultural and environmental issues.This study addresses the gap by using a synthesized application(app)for demographic surveys and Global Navigation Satellite System(GNSS)technology to implement research processes.This article focuses on managing visitors within the famous Freycinet National Park.Extremely comprehensive structured data were analyzed in three phases,(1)identifying groups of visitors who are more likely to use the walking trails,(2)those who are more and less likely to visit during/peak crowding times,and(3)finally creating an integrated Spatio-temporal dependency model via a machine-based learning system for real-time activity.This research examines innovative techniques that can offer energy resources to managers and tourism agencies,especially in detecting,measuring,and potentially relieving crowding and over-tourism. 展开更多
关键词 Spatio-temporal dependency machine-based learning global navigation satellite system(GNSS)technology smartphones
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Advances in BeiDou Navigation Satellite System(BDS)and satellite navigation augmentation technologies 被引量:14
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作者 Rui Li Shuaiyong Zheng +4 位作者 Ershen Wang Jinping Chen Shaojun Feng Dun Wang Liwen Dai 《Satellite Navigation》 2020年第1期126-148,共23页
Several noteworthy breakthroughs have been made with the BeiDou Navigation Satellite System(BDS)and other global navigation satellite systems as well as the associated augmentation systems,such as the commissioning of... Several noteworthy breakthroughs have been made with the BeiDou Navigation Satellite System(BDS)and other global navigation satellite systems as well as the associated augmentation systems,such as the commissioning of the BDS-3 preliminary system and the successful launch of the first BDS-3 GEO satellite which carries the satellite-based augmentation payload.Presently,BDS can provide basic services globally,and its augmentation system is also being tested.This paper gives an overview of BDS and satellite navigation augmentation technologies.This overview is divided into four parts,which include the system segment technologies,satellite segment technologies,propagation segment technologies,and user segment technologies.In each part,these technologies are described from the perspectives of preliminary information,research progress,and summary.Moreover,the significance and progress of the BeiDou Satellite-based Augmentation System(BDSBAS),low earth orbit augmentation,and the national BeiDou ground-based augmentation system are presented,along with the airborne-based augmentation system.Furthermore,the conclusions and discussions covering popular topics for research,frontiers in research and development,achievements,and suggestions are listed for future research. 展开更多
关键词 BeiDou Navigation satellite System satellite navigation augmentation systems System segment technologies satellite segment technologies Propagation segment technologies User segment technologies
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