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您的检索式：作者名="R.A.Fuller"
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| 1 | Wilderness and future conservation priorities in Australia显示文摘 | Watson J.E.M R.A.Fuller A.W.T.Watson | | 0，，： | 1 |
| 2 | Remote Observations in China’s Ramsar Sites: Wetland Dynamics, Anthropogenic Threats, and Implications for Sustainable Development Goals显示文摘The Ramsar Convention on Wetlands is an international framework through which countries identify and protect important wetlands.Yet Ramsar wetlands are under substantial anthropogenic pressure worldwide,and tracking ecological change relies on multitemporal data sets.Here,we evaluated the spatial extent,temporal change,and anthropogenic threat to Ramsar wetlands at a national scale across China to determine whether their management is currently sustainable.We analyzed Landsat data to examine wetland dynamics and anthropogenic threats at the 57 Ramsar wetlands in China between 1980 and 2018.Results reveal that Ramsar sites play important roles in preventing wetland loss compared to the dramatic decline of wetlands in the surrounding areas.However,there are declines in wetland area at 18 Ramsar sites.Among those,six lost a wetland area greater than 100 km^(2),primarily caused by agricultural activities.Consistent expansion of anthropogenic land covers occurred within 43(75%)Ramsar sites,and anthropogenic threats from land cover change were particularly notable in eastern China.Aquaculture pond expansion and Spartina alterniflora invasion were prominent threats to coastal Ramsar wetlands.The observations within China’s Ramsar sites,which in management regulations have higher levels of protection than other wetlands,can help track progress towards achieving United Nations Sustainable Development Goals(SDGs).The study findings suggest that further and timely actions are required to control the loss and degradation of wetland ecosystems. | D.Mao Z.Wang Y.Wang C.-Y.Choi M.Jia M.V.Jackson R.A.Fuller | 2021 | Journal of Remote Sensing2021，，1： | 1 |
| 3 | 利用GPS张量接收机实现航天器制导和控制显示文摘自1994年初开始,Space Systems/LORAL公司就在开发一种用于航天器姿态和轨道确定的空间鉴定级GPS接收机。具有导航和姿态确定输出功能的这种接收机已经装在德国Daimler Benz航空航天公司的Astro-SPAS航天器上飞行。该航天器是在1994年亚特兰蒂斯号航天飞机执行第66次任务时释放入轨的。GPS张量接收机的最显著特点是它不仅能提供GPS的正常输出信息即航天器的轨道位置、速度和时间基准,还能确定航天器的姿态。这种方法利用4个天线通道的多路射频输出测量这些信号间的载波相位差,然后根据这些测量值处理出姿态解。这种定姿方案可以最大限度降低系统的尺寸、重量和功耗,并可减少部件数目。GPS张量接收机将导航和定姿技术融入一个功能强大的辐射加固空间处理器的设计中。 | R.A.Fuller B.Kemper J.J.Rodden 潘科炎 | 1999 | 控制工程(北京)1999，，2： | 0 |
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