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This paper proposes to evaluate the installed performance of a slotted waveguide (SWA) antenna array on large platforms using an equivalent model based on near-field samplings over slots. The tangential electric fields over the SWA slots were first sampled to obtain equivalent magnetic current sources. The equivalent sources were then put on a closed perfect electric conducting box, same profile of...
The air-based information network of the Space-Air-Ground Integrated Network has the distinct characteristics of heterogeneous, time-varying, distributed and self-organized, which bring not only new challenges of node mobility model, dynamic network grouping and interconnection and intercommunication of heterogeneous networks, but also higher requirements of network security. Therefore, selecting...
In air-based information network of the Space-Air-Ground Integrated Network, it is critical to select an efficient communication link for each communication. However, some communication may not have fixed rules. In this article, we build a model of the air-based information network, and use the dynamic programming to select the most efficient communication link by minimizing the energy consumption...
Due to the influence of pollutants on human health, this paper introduced the status of pollutants concentration prediction models, including excellent mixing reactor model, mass balance model, and mixture factor model. And then the method which can predict distribution and concentration of pollutants was analyzed.
This paper, taking Beijing, Tianjin, Shanghai of China for example, discussed the method of urban carbon emissions prediction. Using Yongbin Zhu and Zheng Wang's optimal growth model to study the energy carbon emissions of cities under steady economic growth, and getting forest carbon sinks of cities with CO2FIX model, then we could result in net carbon emissions of cities. The results showed that...
In order to reduce the thrust ripple of linear servo system, a double-sided air core permanent magnet linear servo motor with trapezoidal shape permanent magnets (TDAPMLSM) is proposed in this paper. An analytical model of the motor for predicting the magnetic field in the air-gap at no-load is introduced. This model is derived based on the equivalent magnetization intensity method, and its accuracy...
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