2021 Vol. 47, No. 8

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Volume 47 Issue82021
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Cargo flow distribution of cargo airlines considering outsourcing
LIU Xinyu, LE Meilong, YU Qinyue
2021, 47(8): 1515-1523. doi: 10.13700/j.bh.1001-5965.2020.0286
Abstract:

For cargo airlines, in the face of a large number of complicated air cargo demands, formulating reasonable route planning and distribution schemes can reduce transportation costs and improve transportation effciency. We established a mixed integer programming model that integrates transport capacity...

Blind identification algorithm of time-domain STBC-OFDM based on feature sequence
YU Keyuan, ZHANG Limin, YAN Wenjun, JIN Kun
2021, 47(8): 1524-1532. doi: 10.13700/j.bh.1001-5965.2020.0262
Abstract:

In order to effectively solve the problem of low SNR adaptability in the blind identification process of STBC-OFDM signals, an identification algorithm for constructing feature sequences in time domain is proposed under the premise of known OFDM block size. This algorithm deduces the time-domain fea...

Estimating number of birds around airport based on avian radar
CHEN Weishi, HUANG Yifeng, LU Xianfeng, ZHANG Jie, CHEN Xiaolong
2021, 47(8): 1533-1542. doi: 10.13700/j.bh.1001-5965.2020.0278
Abstract:

A multi-target automatic initiation and tracking algorithm suitable for avian radar data is proposed to realize the statistical analysis of the number of bird targets in the hot spots of bird activities around the airport. The algorithm estimates the probability of association between the measuremen...

Vulnerability of vehicular ad hoc network based on complex network
ZHANG Hong, LYU Yuejing
2021, 47(8): 1543-1549. doi: 10.13700/j.bh.1001-5965.2020.0292
Abstract:

As an important fundamental application of intelligent traffic system, the safe and stable operation of Vehicular Ad Hoc Network (VANET) is indispensable for the transportation system and even the sustainable development of social economy. The largest connected degree, average size of connected comp...

Influence of earth-atmosphere radiation on imaging characteristics of space object
ZHANG Luping, CHEN Sheng, HU Moufa
2021, 47(8): 1550-1557. doi: 10.13700/j.bh.1001-5965.2020.0256
Abstract:

To analyze the influence of earth-atmosphere radiation on imaging characteristics of space object, first, the visible light imager mounted on Geosynchronous Orbit (GEO) satellite was treated as an observation platform, and the motion scenes of Highly Elliptical Orbit (HEO) and Low Earth Orbit (LEO) ...

Ground-based GNSS-R soil moisture retrieval based on correlation power correction
HONG Xuebao, ZHANG Bo, RUAN Hongliang, HAN Mutian, YANG Dongkai, SONG Shuhui
2021, 47(8): 1558-1564. doi: 10.13700/j.bh.1001-5965.2020.0154
Abstract:

In soil moisture observation using Global Navigation Satellite System Reflectometry (GNSS-R) technique, actual antennas' directionalities will bring about the biases in the correlation power measurements of the direct and reflected GNSS signals. For eliminating the cosine-like oscillatory bias of th...

Performance of oxygen-consuming catalytic inerting system of fuel tank under flight envelope
PENG Xiaotian, FENG Shiyu, REN Tong, ZHANG Ruihua, PAN Jun, WANG Yangyang
2021, 47(8): 1565-1570. doi: 10.13700/j.bh.1001-5965.2020.0283
Abstract:

In order to provide input parameters for the design of new types of oxygen-consuming inerting system components, based on the proposed low-temperature controllable oxygen-consuming catalytic inerting system flow, the system mathematical model is established based on the mass conservation and energy ...

Optimized Landweber iterative fast image reconstruction algorithm for electromagnetic tomography
HUO Jiwei, LIU Ze, WANG Yadong, YUAN Wei, WANG Chengfei
2021, 47(8): 1571-1579. doi: 10.13700/j.bh.1001-5965.2020.0284
Abstract:

Due to the pathological property and ill-posedness of sensitivity matrix in Electromagnetic Tomography (EMT), the quality of the reconstructed image is relatively low. To improve the imaging quality and imaging speed, this paper proposes an optimized Landweber iterative fast iteration image reconstr...

Dynamic modeling and simulation of irregular bearing failure
WANG Zhen, YANG Zhengwei, HE Haohao, MING Anbo, ZHANG Wei
2021, 47(8): 1580-1593. doi: 10.13700/j.bh.1001-5965.2020.0232
Abstract:

Most of the existing bearing failure researches simplified the failure to regular shapes such as rectangular grooves or circular pits, which were quite different from the actual failure morphology, taking the aero-engine rotor system as the research object, starting from the actual fault morphology ...

Transpiration cooling test of porous plate in vacuum environment
CHEN Xingyu, WANG Liyan, CHEN Weihua, WANG Zhenfeng, CAO Zhanwei, GAO Yang
2021, 47(8): 1594-1604. doi: 10.13700/j.bh.1001-5965.2020.0257
Abstract:

During high speed flight, the temperatures of the vehicle can reach extremely high values in the critical parts. To solve the problem of thermal protection for the critical parts, series of transpiration cooling tests using different materials as porous plate and water as coolant were carried out. T...

A robust beamforming algorithm based on double-layer reconstruction of covariance matrix
CAO Silei, ZENG Weigui, WANG Lei
2021, 47(8): 1605-1611. doi: 10.13700/j.bh.1001-5965.2020.0297
Abstract:

Focusing on the problem that the performance of traditional adaptive beamformer declines sharply when the covariance matrix contains the target signal component and the target steering vector mismatch, a robust beamforming algorithm based on double-layer reconstruction of interference-plus-noise cov...

Novel damping-variable sliding mode cascade control for electro-hydrostatic actuator
WANG Mingkang, FU Yongling, ZHAO Jiang'ao, YANG Rongrong
2021, 47(8): 1612-1618. doi: 10.13700/j.bh.1001-5965.2020.0252
Abstract:

Aimed at improving the performance of an Electro-Hydrostatic Actuator (EHA), a novel Cascade Control (CC) algorithm based on Damping-Variable Sliding Mode Control (DV-SMC) and PID is proposed in this paper. A high-order model of EHA was divided into two low-order subsystems, i.e. mechanical subsyste...

Fault-tolerant fixed-time path following guidance control of UAV
CUI Zhengyang, WANG Yong
2021, 47(8): 1619-1627. doi: 10.13700/j.bh.1001-5965.2020.0250
Abstract:

A fault-tolerant fixed-timepath following guidance control method for the UAVs subject to thedisturbancesand actuator faults is studied. Both backstepping and fixed-time convergence techniques are employed for developing the line-of-sight path following control strategies to guarantee the convergenc...

Aeroelastic optimization of large aircraft considering multiple cruise conditions
LI Xuyang, WAN Zhiqiang, WANG Xiaozhe, YANG Lujia, YANG Chao
2021, 47(8): 1628-1637. doi: 10.13700/j.bh.1001-5965.2020.0287
Abstract:

Aiming at the problem of poor performance at off-design points in the current common single-point optimization design method of large aircraft wings considering multiple cruise conditions, a synthetical aeroelastic optimization framework with multiple cruise conditions is proposed, and the multi-poi...

Structural reliability calculation method based on improved weighted response surface
WU Jie, ZHANG Jianguo, YOU Lingfei, YE Nan
2021, 47(8): 1638-1645. doi: 10.13700/j.bh.1001-5965.2020.0251
Abstract:

Response surface method is a widely used agent model analysis method for structural reliability analysis because of its good applicability and maneuverability. Aimed at the difficulties of the response surface method, such as balancing the efficiency and accuracy, a structural reliability calculatio...

Imperialist competitive optimized dual-objective comprehensive decision algorithm for satellite selection
QIU Ming, YAN Yongjie, SUN Rui, ZHANG Wenyu
2021, 47(8): 1646-1655. doi: 10.13700/j.bh.1001-5965.2020.0235
Abstract:

With the development of Global Navigation Satellite System(GNSS), the prospect of GNSS has been widely recognized in the world. In particular, the positioning solutions with fast and accuracy calculation are essential for the GNSS receiver design. The most of the current satellite selection algorith...

A geomagnetic reference map reconstruction method based on sparse representation and dictionary learning
MA Xiaoyu, ZHANG Jinsheng, LI Ting, HAO Liangliang
2021, 47(8): 1656-1663. doi: 10.13700/j.bh.1001-5965.2020.0263
Abstract:

Geomagnetic matching navigation plays an important role in the field of navigation guidance. The construction accuracy of geomagnetic reference map determines the effectiveness of geomagnetic matching navigation. Aimed at the problem that the existing geomagnetic reference map construction accuracy ...

Ship detector in SAR images based on EfficientDet without pre-training
BAO Zhuangzhuang, ZHAO Xuejun
2021, 47(8): 1664-1672. doi: 10.13700/j.bh.1001-5965.2020.0255
Abstract:

Aiming at the problem of multi-scale and multi-scene Synthetic Aperture Radar (SAR) ship detection, an object detector without pre-training based on EfficientDet is proposed. The existing SAR image ship detectors based on convolutional neural networks do not show excellent performance that it should...

Preparation and growth processes of nickel-immersed coating on 2024 aluminum alloy
GAO Xu, CHEN Haining, HAN Dongxiao, LIU Huicong, ZHU Liqun, LI Weiping
2021, 47(8): 1673-1678. doi: 10.13700/j.bh.1001-5965.2020.0260
Abstract:

A phosphoric acid-nickel chloride reaction system was designed by utilizing the comprehensive corrosion properties of phosphoric acid and the activation effect of chloride ions. By characterizing surface potential and microscopic morphology, the nickel immersion process was analyzed at different pho...

Buoyancy lifting scheme for marine risers in deep-sea mining system
GAI Yuxin, LI Min
2021, 47(8): 1679-1686. doi: 10.13700/j.bh.1001-5965.2020.0240
Abstract:

With the consumption of modern industry, the limited land resources have been unable to support the sustainable development of human society in the future, so more and more attention has been paid to the exploitation of marine resources. Marine riser is a key component in deep-sea mining system, whi...

Fault diagnosis of airborne fuel pump based on EMD and SVM
CHEN Junbai, LIU Yongzhi, CHEN Yong, NIE Kai
2021, 47(8): 1687-1696. doi: 10.13700/j.bh.1001-5965.2020.0620
Abstract:

For the problems of less onboard fuel pump fault data source, low diagnosis efficiency, high maintenance costs, and lack of effective fault characteristics, we use vibration signals and pressure signals collected from onboard fuel transfer system experimental platform, and put forward an onboard fue...

Random error test and error source analysis of MSCSG
GENG Mengmeng, REN Yuan, FAN Yahong, WANG Lifen, YU Chunmiao
2021, 47(8): 1697-1704. doi: 10.13700/j.bh.1001-5965.2020.0269
Abstract:

There is a large random error in the angular rate measurement signal of Magnetically Suspended Control & Sensing Gyroscope (MSCSG), which is not conducive to improving the sensitivity accuracy of MSCSG. In this paper, taking the principle prototype of MSCSG as the research object, the Allan vari...

A rapid deployment strategy of relay unmanned aerial vehicle
ZHANG Xiaomeng, YANG Sen, SONG Xiao, HU Yongjiang, LI Wenguang
2021, 47(8): 1705-1711. doi: 10.13700/j.bh.1001-5965.2020.0249
Abstract:

In order to solve the problems in mission planning, such as the low deployment efficiency of relay Unmanned Aerial Vehicle (UAV) and the deployment scheme cannot meet the minimum number requirements, a fast relay UAV deployment strategy is proposed. First, according to the task requirements of the l...

Chaos sparrow search optimization algorithm
LYU Xin, MU Xiaodong, ZAHNG Jun, WANG Zhen
2021, 47(8): 1712-1720. doi: 10.13700/j.bh.1001-5965.2020.0298
Abstract:

Aimed at the problem that when the Sparrow Search Algorithm (SSA) is close to the global optimum, the population diversity decreases, and it is easy to fall into the local optimal solution. A Chaotic Sparrow Search Optimization Algorithm (CSSOA) is proposed. Firstly, the population was initialized b...