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Articles 56761 - 56790 of 302576

Full-Text Articles in Physical Sciences and Mathematics

Mgrre_Thinsections_Mgrre_12_122, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_122, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_130, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_130, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_131, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_131, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_132, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_132, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_135, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_135, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_139, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_139, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_141, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_141, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_143, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_143, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_144, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_144, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_151, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_151, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_152, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_152, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_155, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_155, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_159, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_159, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_12_165, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_12_165, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_33_2, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_33_2, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_33_3, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_33_3, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre_33_4, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre_33_4, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Moc_13_73, Mgrre Jul 2021

Mgrre_Thinsections_Moc_13_73, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Moc_05_86, Mgrre Jul 2021

Mgrre_Thinsections_Moc_05_86, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Moc_05_89, Mgrre Jul 2021

Mgrre_Thinsections_Moc_05_89, Mgrre

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No abstract provided.


Mgrre_Thinsections_Moc_05_88, Mgrre Jul 2021

Mgrre_Thinsections_Moc_05_88, Mgrre

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No abstract provided.


Mgrre_Thinsections_Moc_05_90, Mgrre Jul 2021

Mgrre_Thinsections_Moc_05_90, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Moc_05_95, Mgrre Jul 2021

Mgrre_Thinsections_Moc_05_95, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-35_2, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre-35_2, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-35_5, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre-35_5, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-35_9, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre-35_9, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-35_15, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre-35_15, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-35_18, Mgrre Jul 2021

Mgrre_Thinsections_Mgrre-35_18, Mgrre

Thin Sections

No abstract provided.


Simulation Of Cooperative Control Process For Multiple Uavs Based On Local Information Connection, Xiangyang Li, Zhili Zhang, Zhang Ning, Gui Yi, Li Jia Jul 2021

Simulation Of Cooperative Control Process For Multiple Uavs Based On Local Information Connection, Xiangyang Li, Zhili Zhang, Zhang Ning, Gui Yi, Li Jia

Journal of System Simulation

Abstract: Aiming at the requirements of cooperative control for multiple UAVs based on local information connection, the distributed architecture of Multi-UAV system is established on the basis of multilayer structure. The communication network topology, state control information model and intelligent Ad-Hoc network mechanism are proposed to ensure the reliable interactive communication among multiple UAVs under local information connection. The cooperative collision avoidance strategy with local state prediction and distributed iterative optimization, combined with the cooperative on-line track planning and threat avoidance control methods, are applied to realize the cooperative control of Multi-UAV's task execution process. Simulation experiments verify the …


Position And Attitude Estimation Based On Combination Matching In Calibration Area, Cai Peng, Chaoping Shen, Hongyan Li Jul 2021

Position And Attitude Estimation Based On Combination Matching In Calibration Area, Cai Peng, Chaoping Shen, Hongyan Li

Journal of System Simulation

Abstract: Vision navigation technology of scene matching needs hardware to measure the distance and attitude of the camera. A method of position and attitude estimation based on the combination of feature points in the calibration area is proposed. The software can get the camera position and attitude of the real-time image by selecting the best set of Scale-Invariant Feature Transform(SIFT) feature matching points of the reference image calibration area of the real-time image, and calculating the local coordinates of the ground of SIFT feature matching points based on the triangle internal linear interpolation method, using space resection, avoids the defect …