This paper proposes an error analysis method based on epipolar geometry which is analyzed for improving the accuracy of attitude estimation. The influence of equivalent focal length and principal point coordinates on ...
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ISBN:
(数字)9781728190044
ISBN:
(纸本)9781728190051
This paper proposes an error analysis method based on epipolar geometry which is analyzed for improving the accuracy of attitude estimation. The influence of equivalent focal length and principal point coordinates on modeling error was analyzed by simulation and experiment based on a rotary table. The result shows that the influence of the equivalent focal length will increase as the rotation angle increases, the different motion states will lead to different degrees of impact of the principal point coordinates. Besides, we derived that pose measuring accuracy is unrelated to the magnitude of rotation angle and there is no accumulative error under simulation conditions. This proposed method can enhance the measuring accuracy and provide some meaningful advice for engineering applications.
In order to make the effectiveness evaluation models of the weapon equipment system universal and flexible, and adapt to different evaluation objects, a framework of effectiveness evaluation model is designed. Next a ...
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ISBN:
(数字)9781728158556
ISBN:
(纸本)9781728158563
In order to make the effectiveness evaluation models of the weapon equipment system universal and flexible, and adapt to different evaluation objects, a framework of effectiveness evaluation model is designed. Next a series of modular and reusable effectiveness evaluation models are proposed under the framework. Each type of evaluation model is built based on IDEF0, and the corresponding input and output of each model are designed. To further improve reusability, several models are mathematically described and model interface is designed based on XML.
As a basic problem of the nonlinear dynamic model, the online solution of time-varying cube root problem (TVCRP) is widely used in science and engineering. However, the practical system is frequently disturbed by the ...
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The generic object detection (GOD) task has been successfully tackled by recent deep neural networks, trained by an avalanche of annotated training samples from some common classes. However, it is still non-trivial to...
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Uncertainty is an inherent attribute of a simulation system which causes inconsistency between the predicated result of the system and its actual result,affecting the robustness and reliability of the *** on analysis ...
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Uncertainty is an inherent attribute of a simulation system which causes inconsistency between the predicated result of the system and its actual result,affecting the robustness and reliability of the *** on analysis of the uncertainty characteristics of the hardware-in-loop(HWIL) system of an aircraft,a framework of uncertainty measurement and analysis is proposed for the HWIL system,and three types of methods are studied which are suitable for measuring the randomness,cognition,and hybrid uncertainties of the HWIL *** a typical simulation object,various methods of measuring uncertainty are investigated,with their effectiveness validated,which lays the ground for further studying the influence of the uncertainty measurement result on the system.
Based on the analysis of aircraft multi-source test data and the characteristics of common data fusion methods, this paper puts forward a multi-source data fusion performance evaluation process model based on credibil...
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ISBN:
(数字)9781728180250
ISBN:
(纸本)9781728180267
Based on the analysis of aircraft multi-source test data and the characteristics of common data fusion methods, this paper puts forward a multi-source data fusion performance evaluation process model based on credibility, and studies the key points of test data pre-processing and compatibility test Methods, credibility analysis methods and multi-source test data fusion methods based on credibility, focusing on the credibility analysis method of multi-source data based on evidence distance and the credibility analysis method based on consistency analysis, from the perspective of reliability, objectively measure the weight of multi-source data in fusion, and carry out typical Validation to test the effectiveness of the multi-source test data fusion performance evaluation method based on credibility.
Flexible air-breathing hypersonic vehicles have very wide range of flight and show significant and complex aerodynamic, scramjet propulsion system, flight dynamic and elastic coupling characteristics, which usually ar...
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New particle formation (NPF) is a key process occurring in the planetary boundary layer (PBL). Newly formed particles are an important source of aerosols and cloud condensation nuclei (CCN) that influence clouds and c...
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In the field of automatic driving, vision-based driving assistance system(V-DAS) is a research direction. Aiming at the demand of V-DAS for low visibility environment perception, we propose a depth estimation method b...
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The traditional predictive correction algorithm requires a large number of iterative calculations for the predicted trajectory, which greatly occupies a large amount of computing resources, so that the real-time solut...
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