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The remote tower technology can provide remote control services for small airports in remote areas with low passenger and cargo throughput[2].In the 1990s, European and American countries began the research and development of remote towers. In 2015, Sweden’s Sundsval Airport approved the use of remote tower operations. In 2019, China Xinjiang Airport Group started the remote tower pilot construction. As a new thing, the remote tower system is different from the traditional tower, and its safety and reliability have not been systematically studied in China. This article introduces several methods that can be used to analyze the reliability of the remote tower system in detail. These methods are analyzed and compared. Finally, this article summarizes the methods applicable to the reliability analysis of China’s remote tower system.

Abstract. In order to accurately reflect the performance degradation law of the aero-engine rotor system during its life span, a novel multi-state reliability analysis method for rotor system is proposed. The method is based on the combination of the Semi-Markov model with UGF technique. The Semi-Markov model is used to describe the performance degradation process of the components of the rotor system. The UGF technique is utilized to exhibit the relationship between the state performance and the performance probability of the components. Furthermore, the UGF of the entire rotor system is obtained by simplifying the system structure with the modularized method. Therefore, the reliability of the rotor system at different task performance levels can be evaluated easily. A practical case study based on a turboprop engine rotor system is performed to illustrate the implementation and efficiency of the proposed reliability analysis method. Meanwhile, compared with the conventional method, the analysis results indicate that the proposed method can reflect the performance degradation process of the rotor system more veritably and effectively.

Abstract. The measurement of complex networks is based on graph theory. Firstly, the basic character of complex networks was analyzed. Then complex networks models such as ER model, small-world model, BA scale-free model were researched. Its construct rule, evolvement process and dynamics characteristic were also analyzed.

Abstract. Multi-source information from multi-sensors is very important to command information system. Processed multi-source information can offer useful decision information to commander. On the basis of explaining concept, function and advantage of multi-sensor data fusion, the common model of the data fusion was introduced. Multi-sensor data fusion technologies and system structure of multi-sensor data fusion were analyzed. ForewordWith the development of science and technology, especially the development of micro-electric technique, integrated circuit and its designing technique, computer technology, modern signal treatment technology and sensor technology, multi-sensor data fusion has developed into a new subject direction and research field.As a new developing cross subject, multi-sensor data fusion technologies have more extensively application in a plurality of fields. Under the condition of information-based war, the range of battle field is expanding constantly, the environment of battle field is becoming more complicated, therefore information apperceiving of battle field has been proposed higher requirement. Under the condition with fast changing environment of battle field, affronted to a mass of data obtained from different sensors, command information system or commander is demanded to deal with these data fast and make policy in time. So it is significant to the research of multi-sensor data fusion technique.