The highly dynamic and highly unstable characteristics of the airborne network make it difficult for traffic monitoring equipment to extract the complete data flow load characteristics within a limited monitoring period, thus limiting the application of the deep learning based traffic classification...

The application of the airline freight alliance helps the airline's business operations, and the airlines improve the quality of service through low operating costs, so that users get a greater sense of satisfaction. Based on the airline freight alliance, this paper discusses the decision-making of ...

Study on acoustic testing method for mechanical properties of thin layer materials.Based on Legendre orthogonal polynomial method, linear independent equations are constructed and the reflection/transmission coefficient of acoustic waves at the interfaces is calculated using liquid/solid boundary co...

An improved online recognition method for fighter maneuver based on dynamic Bayesian network is proposed for automatic flight training evaluation. First, the maneuver characteristics of instrument, simple stunt and complex stunt flight are analyzed. Then, according to the causal relationship between...

To solve the problem of path planning for logistics UAV in the complex low-altitude airspace, internal and external restrictions such as airspace environment and transportation tasks were considered. Taking minimize flight time, energy consumption and path risk as the objective function, the multi-r...

To solve the problems of mental workload assessment in multiple flight tasks of the aircraft cockpit multi-display interfaces, we design three different types of flight missions of the multi-display interfaces, i.e. flight monitor, flight calculation, and radar detection, to systematically develop t...

In order to investigate the influence of propeller slipstream on the aerodynamic characteristics of low Reynolds number diamond joined-wing configuration solar-powered UAV with different rotational speeds. It was simulated accurately by solving the Reynolds Averaged Navier-Stokes (RANS) equation bas...

Aimed at the problem of target recognition with parameters of interval cross type, the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method for target recognition based on intuitionistic fuzzy set and cloud model is proposed in this paper. The target database model includin...

To improve the anti sweep jamming performance of the Chaotic Codes Phase Modulation and Linear Frequency Modulation (CCPM-LFM) hybrid modulation radio fuze, the response of the CCPM-LFM fuze under sweep jamming was analysed, and an anti jamming method based on harmonic coefficient amplitude average ...

To solve the resource management problem of phased array radar network in tracking ballistic missiles, the scenario of anti-missile early warning combat is analysed, and a target assignment benefit function is proposed, which integrates target tracking accuracy and radar switching rate. Constraints ...

In order to describe the characteristics of pressure wave propagation inside the pipeline in the digital switched hydraulic system accurately, an analytical model of pressure wave propagation inside the pipeline based on the transfer function and time delay was applied in this paper. By coupling the...

In order to ensure that the large-scale navigation constellation has autonomous operation capability and accurate position reference information with limited on-board computing capability and communication capability, the information fusion method of constellation distributed autonomous orbit determ...

A non-singular adaptive terminal sliding mode control law is proposed to simultaneously control the attitude and orbit of the spacecraft. Firstly, the attitude-orbit coupling dynamic model of the spacecraft with parameter uncertainty is established based on the dual quaternion. Secondly, based on th...

A method for Orthogonal Frequency Division Multiplexing (OFDM) channel compensation and signal detection based on neural network is proposed for the complex channel conditions of nonlinear distortion and multi-path effects. First, the receiver uses the Least Squares (LS) and Zero Forcing (ZF) algori...

During the normal flight of rocket, propellant leakage may lead to explosion due to the failure of rocket structure or components. Once the explosion happens to the rocket, the crew module will be impacted by the shock wave, threatening the life safety of the astronauts. At present, there is little ...

The characteristic-wise hybrid compact-Weighted Essentially Non-Oscillatory (WENO) scheme HCW-R combines the upwind compact scheme CS5-P with the WENO scheme, achieving an excellent resolution property. However, it needs to deal with the block-tridiagonal systems of linear equations when applied to ...

The flying-wing UAV has problems such as low pitching inertia and weak longitudinal stability, and as a result, its gust alleviation characteristics are sensitive to the changes in flight parameters. Furthermore, the flying-wing UAV has multiple control surfaces, the control effects of different pla...

In order to meet the accuracy evaluation requirement of composite material surface measurement with lidar, this paper proposed an analysis method based on Signal to Noise Ratio (SNR) of lidar echo signals. By evaluating the detection results, the deformation results after the demolding can be obtain...

In order to give full play to the advantages of innovation in the conceptual design stage, and to satisfy the dual constraints of geometry and performance for the reconfigurable spacecraft, a conceptual design method of reconfigurable spacecraft based on visualization model is proposed. The architec...

Due to the continuous interaction with the environment to learn the optimal decision, the training time of the decision network based on reinforcement learning is restricted by the feedback rate of the environment, which usually consumes a lot of time. To solve this problem, an offline training meth...

An integer programming model is built to solve the integrated planning problems including order allocation, components and parts processing, product assembly and product transportation in aviation parts integrated manufacturing environment with multiple heterogenic discrete manufacturing plants. The...