Airborne network is the key to realize real-time reliable transmission of information in avionics system. Its development degree and capability determine the overall configuration and comprehensive information efficiency of avionics system. Unlike general computer networks, airborne networks emphasi...

Since the error motion of the high-precision spindles is often in the same order as the noise of the test system, the measuring accuracy of the three-point method is greatly reduced by the noise signals. With the synchronous error motion (SEM), a combined processing algorithm with equal angle sampli...

In order to help airlines plan route network reasonably and reduce operation cost, from the perspective of airlines, airport capacity is regarded as a function of arrival and departure flights to draw airport capacity envelope curve. Based on airport capacity envelope curve, a two-stage mixed intege...

To predict the effect of dock on hydrodynamic performance of autonomous underwater vehicle (AUV) and to improve AUV underwater docking success rate, a method of multi-block hybrid grids combined with dynamic layer method and user defined function (UDF) was presented, which was applied to the physics...

The height of the hypersonic vehicle gliding flight is over 30 km, so the atmosphere is extremely thin and the traditional terrain match aided navigation with barometric altimeter cannot work properly. In order to improve the accuracy of terrain match, on the basis of analyzing the insensitivity of ...

Path planning is the key technology to realize autonomous navigation of mobile robots. For the problem that the path length is not the shortest and the path is not coherent in the two plan cycles with conventional path planning method, a new method for inter-frame correlation smooth path planning ba...

As a transitional region from sky to space, near-space has important value in the fields of science, economy and military. With the development of remote sensing technology and the continuous development of mode simulation, the massive near-space data of higher spatial and temporal resolution is inc...

The study of fuel grain design and internal ballistic performance can provide the foundation for the design and optimization of hybrid rocket motor. Fuel grain design and internal ballistics calculation process and method of hybrid rocket motor were established. Based on the fuel regression rate law...

Beidou navigation constellation can achieve autonomous orbit determination and performance enhancement by introducing inter-satellite ranging and transmitting links. During data transmission of inter-satellite links, the relative position change of satellites with time causes the constant change of ...

During the service period of propellant tank, due to the existence of uncertain factors such as structural strength degradation and external random loads, the reliability of propellant tank is with time-variant characteristic. Based on interval theory and stress-strength interference theory, an inte...

In order to improve the material loading efficiency in vehicles, this paper proposes a new cylindrical material loading robot used in confined space. The residual vibration of the end-effector has been suppressed by optimizing the joint trajectory. Firstly, the overall design scheme and work flow of...

Aimed at the calibration problem of spacecraft multi-dimensional installation in the coupling situation, an on-orbit calibration method based on imager observation is proposed, and this method effectively overcomes the coupling nonlinearity of the calibration equations. Firstly, the geometric equati...

In order to improve the robustness of the pulsar position error estimation to the proper motion and satellite position error and the efficiency of the overall algorithm, a two-stage Kalman filter (TSKF) algorithm is designed. Firstly, the influences of pulsar proper motion and satellite position err...

The formation control problems for high-order linear swarm systems with time-varying delays, topology uncertainties and external disturbances are investigated. Firstly, the mathematical description of the formation control for swarm systems is established, and the formation control protocol is propo...

Considering the attitude tracking problem for reusable launch vehicles (RLVs) during reentry phase with high nonlinear and multi-variable coupling characteristics in the presence of parameter uncertainties and external disturbances, an interval type-2 adaptive fuzzy sliding mode based attitude contr...

The construction of geomagnetic reference map is the cornerstone of geomagnetic matching navigation.In this paper, the compressed sensing theory is applied to the geomagnetic information acquisition, which aims at solving the problem that the accuracy of the geomagnetic reference map is not satisfac...

The structure layouts of the existing spatial translational compliant parallel micro-positioning stages are not compact, and the parasitic motion of each kinematic joint accumulates during multi-axis actuation, which leads to the augment of cross-axis coupling error. In order to solve these problems...

The vehicle head-up display (HUD) system displays the source image plane on the windshield surface by image warping. Non-linear access to source image pixels degrades memory access efficiency. To solve this problem, a Cache is designed to ensure pixel access continuity, reduce memory access numbers ...

In order to meet the actual requirements of navigation spoofing of "low, slow, small" UAV, a miniaturized synchronous GPS spoofer has been developed based on our asynchronous GPS generator spoofer. Firstly, based on asynchronous GPS generator spoofer RF signal model, considering the spoofer signal p...

The rate constraint (RC) traffic in time triggered Ethernet (TTE) is event-triggered traffic. In the application scenario of dynamic scheduling of RC traffic, if it can predict the sequence of several RC traffic arriving at the switching node in a short time in the future, the switching node can mak...

The numerical method is used to simulate the whole process of seaplane landing movement attitude and force, which is a complex problem combining water vapor two-phase flow, kinematics and dynamics. In this paper, the global motion grid method based on Fluent commercial software is combined with VOF ...