scholarly journals Terrain Modeling and Analysis Using Earth Observation System Based Data: A Case Study of Anambra State, Nigeria

OALib ◽  
2021 ◽  
Vol 08 (04) ◽  
pp. 1-18
Author(s):  
E. Ahuchaogu Udo ◽  
O. C. Ojinnaka ◽  
A. C. Chukwuocha ◽  
U. Duru Uchenna
Keyword(s):  
Earth Observation ◽  
Observation System ◽  
Terrain Modeling ◽  
Modeling And Analysis ◽  
Anambra State ◽  
Earth Observation System

Target Evaluation and Correlation Method (TECM) as an Assessment Approach to Global Earth Observation System of Systems (GEOSS)

2011 ◽  
Vol 2 (1) ◽  
pp. 36-62 ◽  
Author(s):  
Samuel Epelbaum ◽  
Mo Mansouri ◽  
Alex Gorod ◽  
Brian Sauser ◽  
Alexander Fridman
Keyword(s):  
Large Scale ◽  
Correlation Method ◽  
System Of Systems ◽  
Earth Observation ◽  
Observation System ◽  
Societal Benefit ◽  
Large Scale Network ◽  
Assessment Approach ◽  
Earth Observation System ◽  
Scale Network

The Global Earth Observation System of Systems (GEOSS) is a ten-year-long Implementation Plan, which commenced in 2005 as a group effort by numerous participating countries and organizations to build a large-scale network to effectively monitor and respond to the increasingly complex web of global environmental and socio-economic issues. This paper proposes the Target Evaluation and Correlation Method (TECM) as an assessment approach to GEOSS with its 241 Targets across the nine “Societal Benefit Areas,” along with a method to identify Target Correlation Levels (TCL). Applying TECM allows concluding whether the chosen targets within the GEOSS fall into the domain of System of Systems (SoS), while using TCLs delineates the extent of inclusion for these targets in the form of a system. Furthermore, this research investigates the possible ways of raising the correlation levels of the targets for the cases in which TCLs are low.

scholarly journals Analysis of Distributed Measurement Method for Array Antenna Position

2020 ◽  
Vol 10 (10) ◽  
pp. 3480
Author(s):  
Zhen Ma ◽  
Xiyuan Chen
Keyword(s):  
High Precision ◽  
Measurement Method ◽  
Earth Observation ◽  
Array Antenna ◽  
Observation System ◽  
Phase Center ◽  
The Earth ◽  
Earth Observation System ◽  
Distributed Measurement ◽  
Antenna Position

The measurement of the phase center of the airborne array antenna can directly affect the accuracy of the Earth observation system. However, the relationship between the relative motion of each sub-antenna cannot be accurately measured because of the adverse environment of the airborne platform. Therefore, it is necessary to find a suitable method to measure the motion parameters of distributed antennas and the phase center of each element antenna accurately in order to improve the imaging resolution of the Earth observation system. Distributed position and orientation system (POS) technology has high precision, but its measurement error will accumulate with time. So it needs to transfer and align continuously to achieve high-precision measurement. The paper introduces the distributed measurement method of measuring the array antenna position based on the combination of fiber Bragg grating (FBG) sensing technology and POS technology on the aircraft wing. The paper first introduces the technical scheme and principle, then carries out the structural design and method analysis. Next, the structural strength of the experimental model is checked and summarized.

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