The ‘Freedom of Navigation' issue has been volatile and often influenced by Sino-US relations in recent years. This problem was rooted in different interpretation of the UNCLOS by China and the US. It has also re...The ‘Freedom of Navigation' issue has been volatile and often influenced by Sino-US relations in recent years. This problem was rooted in different interpretation of the UNCLOS by China and the US. It has also reflected their different national Interests and maritime strategies. This issue has caused frequent frictions between the two sides and may lead to their future contest for sea power. At the same time, it also urges the both sides to set up new mechanism for confidence building that may help them to manage it in a more rational way.展开更多
In the paper,a set of algorithms to construct synthetic aperture radar（SAR）matching suitable features are frstly proposed based on the evolutionary synthesis strategy.During the process,on the one hand,the indexes o...In the paper,a set of algorithms to construct synthetic aperture radar（SAR）matching suitable features are frstly proposed based on the evolutionary synthesis strategy.During the process,on the one hand,the indexes of primary matching suitable features（PMSFs）are designed based on the characteristics of image texture,SAR imaging and SAR matching algorithm,which is a process involving expertise;on the other hand,by designing a synthesized operation expression tree based on PMSFs,a much more flexible expression form of synthesized features is built,which greatly expands the construction space.Then,the genetic algorithm-based optimized searching process is employed to search the synthesized matching suitable feature（SMSF）with the highest effciency,largely improving the optimized searching effciency.In addition,the experimental results of the airborne synthetic aperture radar ortho-images of C-band and P-band show that the SMSFs gained via the algorithms can reflect the matching suitability of SAR images accurately and the matching probabilities of selected matching suitable areas of ortho-images could reach 99±0.5%.展开更多
文摘The ‘Freedom of Navigation' issue has been volatile and often influenced by Sino-US relations in recent years. This problem was rooted in different interpretation of the UNCLOS by China and the US. It has also reflected their different national Interests and maritime strategies. This issue has caused frequent frictions between the two sides and may lead to their future contest for sea power. At the same time, it also urges the both sides to set up new mechanism for confidence building that may help them to manage it in a more rational way.
基金supported by National Natural Science Foundation of China (Grant No.41204026)Advanced Research Foundation (Grant No.9140A24060712KG13290)Open Fund of Key Laboratory of Science and Technology on Aerospace Flight Dynamics (Grant No.2012AFDL010)
文摘In the paper,a set of algorithms to construct synthetic aperture radar（SAR）matching suitable features are frstly proposed based on the evolutionary synthesis strategy.During the process,on the one hand,the indexes of primary matching suitable features（PMSFs）are designed based on the characteristics of image texture,SAR imaging and SAR matching algorithm,which is a process involving expertise;on the other hand,by designing a synthesized operation expression tree based on PMSFs,a much more flexible expression form of synthesized features is built,which greatly expands the construction space.Then,the genetic algorithm-based optimized searching process is employed to search the synthesized matching suitable feature（SMSF）with the highest effciency,largely improving the optimized searching effciency.In addition,the experimental results of the airborne synthetic aperture radar ortho-images of C-band and P-band show that the SMSFs gained via the algorithms can reflect the matching suitability of SAR images accurately and the matching probabilities of selected matching suitable areas of ortho-images could reach 99±0.5%.
