Nowadays the air-breathing hypersonic vehicles are focused on by the researchers of aeronautics and astronautics. This type of vehicle usually uses a scramjet engine and an integrated design method, which brings a series of aeroelastic problems. This paper first describes the research progress of in...

The requirement of thermal comfort for passengers is constantly increasing, which puts forward more urgent requirements for the overall thermal comfort of civil aircraft cabin. Based on the actual measurement of flights flying from north to south, it is found that the temperature distribution on bot...

Selective laser melting (SLM) technique in combination with the in-situ resource utilization (ISRU) concept can be an off-world manufacturing solution to the significant engineering challenge on the large-scale construction for extra-terrestrial bases. The feasibility of SLM process applied to the a...

With the rapid development and wide application of information technology such as big data, cloud computing, Internet of Things, and mobile Internet, new combat modes continue to emerge. The "cloud operation" with the core of the task distributed command & control process becomes a brand-new cro...

A rough surface target and jamming signal recognition method for the ground frequency modulation (FM) fuze is proposed in order to effectively identify the ground target echo signal of the FM fuze and the digital radio frequency memory (DRFM) transmissive jamming. A rough surface beat frequency sign...

Aimed at the problem of limited workspace and inconsistent measurement accuracy of NDI electromagnetic tracking equipment, a method for expanding the workspace of electromagnetic tracking system and guaranteeing measurement accuracy by moving magnetic field generator is proposed. This method uses th...

In order to calculate the camera pose from a single RGB image, a deep encoder-decoder dual-stream convolutional neural network (CNN) is proposed, which can improve the accuracy of visual localization. The network first uses an encoder to extract advanced features from input images. Second, the spaci...

The passive induction mechanism of electrostatic tomography (EST) determines that the number of independent measurements is equal to the number of electrodes, which is much less than the number of independent measurements of relatively mature electrical tomography (ET) technologies such as elelctric...

MEMS inertial measurement unit (MIMU) calibration is one of an important research direction in low-precision inertial navigation. Traditional calibration method has complex operating procedures and depends most on turntable accuracy. In order to overcome the problem of MIMU calibration in batch prod...

The variable selection and parameter estimation problem is researched in the framework of mixed-type regression model with both functional and multivariate predictors, which broadens the scope of functional data analysis and the application fields of variable selection methodology. First the functio...

In order to realize the real-time fault diagnosis of a liquid rocket engine onboard, a fault diagnosis device is designed by combining FPGA and DSP as the hardware architecture. The FPGA controls the high-precision A/D for sensor data acquisition, the DSP runs the fault diagnosis algorithm and outpu...

In order to study the dimension reduction method of high-dimensional data based on regression model further, and the supervised clustering of variables algorithm based on Gram-Schmidt transformation (SCV-GS) is proposed. SCV-GS uses the key variables selected in turn by the variable screening idea a...

According to the performance requirements and technology demands of human security check in public place, combining the performance advantages of perspective imaging of passive millimeter wave imaging (PMMWI) and high discriminability in image details of visible imaging (Ⅵ), an approach for detectio...

To solve the problem that the hole mapping method occupies too much physical memory, an improved hole mapping method was developed. Based on the neighbor-to-neighbor search algorithm, a donor search method based on adjacent front was developed. An explicit assembly algorithm of unstructured overset ...

Array jet impingement cooling technology can effectively solve the heat dissipation problem of high heat flux devices. In order to verify the effectiveness of heat transfer enhancement on the impacted surface for optimizing cooling performance of two-phase jet cooling, this article studied the effec...

With the development of digital signal processing technology, the application of high-performance signal processing has attracted more and more attention, which also poses great challenges to the computing speed and throughput efficiency of the corresponding processors. The shifter unit is an import...

For the harsh internal signal environment and the large signal attenuation of satellite navigation with the difficulties of capturing and tracking signals stably inside large-scale, complex and multifunctional buildings, the multipath effect is serious, and the short multipath has a great influence ...

In order to analyze the reasons why the design of forward-swept wing aerodynamic configuration cannot be popularized and applied in aviation industry, simplified strake-wing, canard-wing and strake/canard-wing configurations were constituted by fixing strake and canard on forward-swept wing and back...

Aimed at the problem that the signal of frequency-modulated continuous wave (FMCW) fuze is very difficult to detect at ultra-low signal to noise ratio (SNR), a detection system based on small-scale periodic state Duffing oscillator is established. This system combines Duffing oscillator characterist...

To meet the requirement of reference atmospheric model in aerospace application, that is, the model should have global scale coverage across seasons and space, and high accuracy of key trajectory points, such as the range for takeoff and landing, a method for modeling and application of range refere...

Single shot multibox detector (SSD) owns the relatively independent regression computations of multi-regressive feature maps, while the object detection algorithms based on SSD cannot make a tradeoff between detection accuracy and real-time speed. To solve the problems above, a single shot mutibox d...

In order to realize the registration of point cloud data respectively obtained from LiDAR and camera, we used a fast multi-scale registration (FMSR) algorithm to register the point cloud data, based on a self-designed three-dimensional scanning laser radar system in our laboratory. The algorithm inc...

The unmanned aerial vehicle (UAV) manipulator's flying performance mostly relies on experts' subjective evaluation and different flight maneuvers lack pertinent evaluation criteria, so a model which uses flight data to evaluate the horizontal flight quality of UAV is established. Firstly, the flight...

The interacting multiple model (IMM) estimator has been proven to be of excellent performance and low complexity in tracking agile targets. The success of IMM attributes to mode mixing, where model outputs are mixed for model-conditional reinitialization. The problem of unequal dimension states mixi...