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In order to adapt to the improvement of freight train braking technology, it is a good method to establish a semi‐physical braking intelligent test system, and the core technology of modeling and interface that supports the system is especially critical. Based on the above background, this paper is focus on the simulation modeling that reflects the braking performance characteristics of freight trains...
This paper proposes a compounded encoding and decoding algorithm based on the information‐grayscale matrix. Generally, it is very difficult to track the original information in the circulation of commodity. This algorithm is aimed to be applied to product tracing, especially fast‐moving consumer goods (FMCG). According to the traceability requirements of product information, we construct the structure...
We developed an advanced data acquisition system for the very long baseline interferometry used for deep‐space detection in recent years. However, there are serious time delay and phase inconsistency problems in the data acquisition system, which greatly increase the complexity of subsequent processors and reduce measurement accuracy. To solve the problem, we establish a numerical model to analyze...
This paper proposes an efficient modeling of series‐parallel structure for the digital downconversion (DDC) implemented in the field programmable gate array for astronomical observation system. The received signals by a radio telescope are of intermediate frequency, and they can be stored and analyzed only after having been converted into digital baseband signals. Although many algorithms have been...
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