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32nd Congress of the International Council of the Aeronautical sciences, ICAS 2021

作者： Xue, Tao Ma, Jinyi Wen, Jiongran Yang, Xizhong Dong, Yiqun Ai, Jianliang Department of Aeronautics and Astronautics Fudan University Shanghai200433 China Science and Technology on Avionics Integration Laboratory Shanghai200233 China

ISBN: (纸本)9783932182914

At present, a variety of autonomous air combat technologies have emerged. However, due to the low degree of algorithm intelligence and the limitations of the airborne computational power, there has not yet been a complete autonomous air combat solution (especially for within-visual-range air combat). This paper proposes that in the short term, the autonomous air combat technology should still be developed in a human-machine collaborative form. To realize such formulation, the tactical decisions and controls of the aircraft must correspond to the human. It is thus necessary to collect and analyze the tactical decisions and commands of human pilots in the air combat. This paper is focused on this work. First, a simulation-based air combat environment is established to construct the human pilots' within-visual-range air combat flight maneuver database. A preliminary analysis was also carried out. It has revealed promising results in terms of time window and decision logics for pilot maneuvering. © 2021 32nd Congress of the International Council of the Aeronautical sciences, ICAS 2021. All rights reserved.

关键词： Database systems

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Efficient mining maximal variant and low usage rate biclusters without candidate maintenance in real function-resource matrix: The DeCluster algorithm

Efficient mining maximal variant and low usage rate bicluste...

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9th International Conference on Advanced Data Mining and Applications, ADMA 2013

作者： Zhang, Lihua Wang, Miao Zhai, Zhengjun Wang, Guoqing School of Computer Science and Engineering Northwestern Polytechnical University Xi'an 710072 China Science and Technology on Avionics Integration Laboratory Shanghai 200233 China

ISBN: (纸本)9783642539169

The health of the functional layer includes the status of functional components in the hierarchy range and overall health status of the whole functional layer. This paper proposed an efficient bicluster mining algorithm: DeCluster, to effectively mine all biclusters with maximal variant usage rate and maximal low usage rate in the real-valued function-resource matrix. First, a sample weighted graph is constructed, it includes all resource collections between both samples that meet the definition of variant usage rate or low usage rate;then, all biclusters with maximal variant usage rate and low usage rate meeting the definition are mined with the mining method of using depth-first sample-growth in the weight graph made. To improve the mining efficiency of the algorithm, DeCluster algorithm uses multiple pruning strategies to ensure the mining of maximal bicluster without candidate maintenance. The experimental result show our algorithm is efficiently than traditional algorithm. © 2013 Springer-Verlag.

关键词： Mining

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Research on automatic testing technology oriented intelligent mobile terminal software

Research on automatic testing technology oriented intelligen...

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2010 International Conference on Communications and Mobile Computing, CMC 2010

作者： Yin, Yongfeng Liu, Bin Wang, Chen Ni, Hongying Dept. of System Engineering of Engineering Technology Beihang University China National Key Laboratory of Science and Technology on Avionics System Integration China

ISBN: (纸本)9780769539898

With the rapid development of ubiquitous computing technology, software is widely used in the intelligent mobile terminals. How to improve the intelligent mobile terminal software quality is one of the hot topics in embedded software testing field. Combined with the developed intelligent mobile terminal software automatic testing environment, the intelligent mobile terminal software testing script technology (TST-IMTS) was proposed firstly. And then, the main characteristics of the TST-IMTS and its modeling method applied to intelligent mobile terminal devices were studied. Furthermore, the automatic testing process based on the TST-IMTS was presented. Finally, TST-IMTS was applied in real intelligent mobile terminal software testing practice, and the verification result showed that the method proposed in this paper was efficient and of great value in engineering application. © 2010 IEEE.

关键词： Software testing

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Graph theory based max-min path selection for a secure DF relaying system 3

Graph theory based max-min path selection for a secure DF re...

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3rd IEEE International Conference on Computer and Communications, ICCC 2017

作者： Li, Jinxi Zhang, Chensi Wang, He Xia, Zeyu Science and Technology on Avionics Integration Laboratory Shanghai200233 China State Key Laboratory of Integrated Service Networks Xidian University Xi'an710071 China

ISBN: (纸本)9781509063505

The use of graph theory to improve the secrecy performance of a wireless multi-hop relaying system is investigated. Particularly, we consider a wireless wiretap network with multi-relay and multi-eavesdropper. A secrecy graph is first established according to the network topology. After building the weight of each edge, an efficient max-min path selection (MM-PS) criterion is then proposed to select an appropriate path for relaying based on shortest path algorithm. Simulation results verified the effectiveness and efficiency of the proposed MM-PS criterion and show that cooperative relaying can bring considerable performance improvement. © 2017 IEEE.

关键词： Graph theory

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Cognitive anti-jamming receiver under phase noise in high frequency bands

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Journal of Systems Engineering and Electronics 2018年第1期29卷 31-38页

作者： FANG Zheng LI Haitao QIAN Yiming School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China China Science and Technology on Avionics Integration Laboratory Shanghai 200233China Faculty of Information Technology Beijing University of TechnologyBeijing 100124China China Nuclear Control System Engineering CO. LTDBeijing 100176China

This paper investigates the jamming sensing performance of the simultaneous transmit and receive based cognitive anti-jamming(SCAJ) receiver impaired by phase noise in local oscillators(LO) over fading channels. Firstly, energy detection(ED)based on the jamming to noise ratio(JNR) of the high frequency bands SCAJ receiver with phase noise under different channels is analyzed. Then, the probabilities of jamming detection and false alarm in closed-form for the SCAJ receiver are derived. Finally,the modified Bayesian Cramer-Rao bound(BCRB) of jamming sensing for the SCAJ receiver is presented. Simulation results show that the performance degradation of the SCAJ system due to phase noise is more severe than that due to the channel fading in the circumstances where the signal bandwidth(BW) is kept a constant. Moreover, the signal BW has an effect on the phase noise in LO, and the jamming detection probability of the wideband SCAJ receiver with lower phase noise outperforms that of the narrowband receiver using the same center frequency. Furthermore,an accurate phase noise estimation and compensation scheme can improve the jamming detection capability of the SCAJ receiver in high frequency bands and approach to the upper bound.

关键词： high frequency band simultaneous transmit and receive phase noise cognitive anti-jamming

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Dynamic Analysis of Service-oriented Advanced avionics System based on Stochastic Evolutionary Game

Dynamic Analysis of Service-oriented Advanced Avionics Syste...

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2022 Chinese Automation Congress, CAC 2022

作者： Liu, Zhaohui Liu, Qingchun Li, Bingfei Zhang, Shuo China National Aeronautical Radio Electronic Research Institute National Key Laboratory of Science and Technology on Avionics System Integration Shanghai China

ISBN: (纸本)9781665465335

Service-oriented advanced avionics system(SOAAS) is a complex network system with different stakeholders. Stake-holders are irrational behavior and may take aberrant behaviors in advanced avionics system. Different behavior will lead the avionics system to different states. In order to accurately predict the development trend of SOAAS and grasp its dynamic characteristics, stochastic evolutionary game theory is applied to study and analyze SOAAS in this paper. A multi-party game model is constructed to describe the behaviours of participant, and Ito stochastic differential equation is established based on stochastic theory to break through the limitation of replicator dynamics equation. The stability problem of SOAAS is effectively analyzed, and sufficient conditions of system stability are given. Simulation results show the correct and practicable of the established game model and analysis method. © 2022 IEEE.

关键词： Stochastic systems

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YOLO-A2G: An air-to-ground high-precision object detection algorithm based on YOLOv5 6

YOLO-A2G: An air-to-ground high-precision object detection a...

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2022 6th International Conference on Machine Vision and Information technology, CMVIT 2022

作者： Li, Lei Yao, Ziyu Miao, Zhiyong Qiu, Xuyi Yang, Xizhong Science and Technology on Avionics Integration Laboratory Shanghai200233 China Yunnan Provincial Radio and Television Administration Yunnan Kunming650031 China

Air-to-ground object detection is playing an increasingly important role in a variety of ground awareness and cognitive missions such as fighter aircraft attempting to assault and defend ground defense barrier fortifications and strike and destroy ground objects. However, air-to-ground object detection becomes very challenging due to the insufficient number of battlefield samples in air-to-ground imaging, many ground background disturbances and large-scale variation. In this paper, an improved air-to-ground object detection algorithm, YOLO-A2G, is proposed to solve this problem based on YOLOv5. In YOLO-A2G, firstly, in response to the insufficient number of samples, we used the direct and inverse Visual Focus (VF) affine a data augmentation algorithm to enrich and expand the samples in addition to the original data augmentation algorithm of YOLOv5. We then introduced the Coordinate Attention (CA) mechanism into the head network of YOLOv5 to autonomously learn explicit and implicit knowledge for the purpose of feature focusing and redundancy removal. Finally, in the post-processing stage after the network prediction, we used Weighted Boxes Fusion (WBF) instead of the traditional NMS to achieve spatial scale fusion. We performed an experimental validation using the Air-to-Ground (A2G) dataset and mAP of YOLO-A2G reached 94%. © Published under licence by IOP Publishing Ltd.

关键词： Object recognition

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SiamAVOT: A High-performance Siamese Network Tracker for Aerial Visual Object Tracking 6

SiamAVOT: A High-performance Siamese Network Tracker for Aer...

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2022 6th International Conference on Data Mining, Communications and Information technology, DMCIT 2022

作者： Deng, Pingyu Qiu, Xuyi Yao, Ziyu Li, Lei School of Aeronautics and Astronautics Shanghai Jiao Tong University Shanghai200240 China Science and Technology on Avionics Integration Laboratory Shanghai200233 China

Aerial vision object tracking technology plays an increasingly critical part in intelligent perception and task cognition when aircraft perform various reconnaissance missions. However, the particularity in object types and visual angles in aerial vision imagery render the tracking process more prone to deformation, scale variation, motion blur and occlusion, making this technique very challenging. A high-performance Siamese network tracker for aerial visual object tracking, SiamAVOT, is proposed to deal with this problem in this paper. First, we utilize the SiamCAR infrastructure to introduce the Bottleneck Attention Module (BAM) attention mechanism after its backbone network for fusion of low and high level features to improve recognition for deformation object features. Then, we change to Distance-IoU (DIoU) loss for the bounding box regression during the training process to improve the network's ability to predict scale variation. Finally, a Kalman filter online learning module that integrates time and space trajectory information is designed to solve the object motion blur and occlusion disappearance problem in the inference process. The proposed SiamAVOT achieves leading performance on the UAV123 and AVOT40 aerial datasets and can run in real-time at 72 FPS. © Published under licence by IOP Publishing Ltd.

关键词： Antennas

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Quantized innovations Kalman filter: stability and modification with scaling quantization

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Journal of Zhejiang University-science C(Computers and Electronics) 2012年第2期13卷 118-130页

作者： Jian XU Jian-xun LI Sheng XU Science and Technology on Avionics Integration Laboratory Shanghai Jiao Tong UniversityShanghai 200240 MOE Key Laboratory of System Control and Information Processing Shanghai Jiao Tong UniversityShanghai 200240China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

The stability of quantized innovations Kalman filtering (QIKF) is analyzed. In the analysis, the correlation between quantization errors and measurement noises is considered. By taking the quantization errors as a random perturbation in the observation system, the QIKF for the original system is equivalent to a Kalman-like filtering for the equivalent state-observation system. Thus, the estimate error covariance matrix of QIKF can be more exactly analyzed. The boundedness of the estimate error covariance matrix of QIKF is obtained under some weak conditions. The design of the number of quantized levels is discussed to guarantee the stability of QIKF. To overcome the instability and divergence of QIKF when the number of quantization levels is small, we propose a Kalman filter using scaling quantized innovations. Numerical simulations show the validity of the theorems and algorithms.

关键词： Kalman filtering Quantized innovation Stability Scaling quantization Wireless sensor network

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An Assumption of R&D Method Driven by Model and Data 1

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14th International Conference on Complex Systems Design and Management, CSD and M 2023

作者： Song, Wenming Li, Kui National Key Laboratory of Science and Technology on Avionics Integration Shanghai China China Aeronautical Radio Electronics Research Institute Shanghai200233 China

ISBN: (数字)9789819965113

ISBN: (纸本)9789819965106

The model-based systems engineering is gradually applied to the development of complex systems, it has the advantages of accurate transmission of design output, rapid response to design changes, and undemanding reuse of design achievements. In this paper, MBSE is evaluated from three perspectives, including the theoretical system of model-driven research and development (R&D), the requirements of product R&D as well as the requirements of complex system R&D, and the shortcomings of MBSE are sorted out. On this basis, this paper proposes the R&D process of complex system hybrid-driven by model and data, and analyzes the key technologies to be solved. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Digital devices

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