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7th IEEE Information technology and Mechatronics Engineering Conference, ITOEC 2023

作者： Jian, Ping Xiong, Wei Liu, Desehng Space Engineering University Science and Technology on Complex Electronic System Simulation Laboratory Beijing China

ISBN: (纸本)9798350334197

"Demand traction and technology promotion"is the main law of equipment system construction and development. Scientific determination and quantitative evaluation of key technologies in the field of military equipment is the key and difficult point of system macro demonstration. Based on the analysis of the technical structure of space information equipment technology, this paper proposes a capability-based requirement analysis framework and process of space information equipment technology system, establishes a requirement analysis model of technology system, and constructs its technical system by taking space situation awareness system as an example. It provides technical basis for the requirement analysis of space information equipment technology system. © 2023 IEEE.

关键词： Construction equipment

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A DQN-based hyperheuristic algorithm for emergency scheduling of Earth observation satellites 2

A DQN-based hyperheuristic algorithm for emergency schedulin...

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2nd International Conference on Electronics, Communications and Information technology, CECIT 2021

作者： Liu, Zheng Xiong, Wei Space Engineering University Science and Technology on Complex Electronic System Simulation Laboratory Beijing China

ISBN: (纸本)9781665437578

With the surge of emergency task demand, large-scale Earth observation satellite emergency scheduling has become a practical problem which is urgent to be solved. In view of this situation, this paper analyzes the constrains and conflict relationship in this problem, and proposes a DQN-based hyperheuristic algorithm. The algorithm includes encoding and decoding, deep Q-network and several low-level heuristic operators. A Markov decision model of this problem is established and 7 low-level heuristic operators are designed according the feature of this problem. After training, DQN behaves well when selecting operators for the scheduling scheme. Finally, several groups of comparative experiments verify the algorithm's ability in solving large-scale satellite emergency scheduling problems. © 2021 IEEE.

关键词： Personnel training

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Collaborative Filtering Recommendation Algorithm of Weaponry Based on Knowledge Graph 2

Collaborative Filtering Recommendation Algorithm of Weaponry...

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2nd IEEE International Conference on Information technology, Big Data and Artificial Intelligence, ICIBA 2021

作者： Li, Xiao Liu, Desheng Chang, Qing Space Engineering University Science and Technology on Complex Electronic System Simulation Laboratory Beijing China

ISBN: (纸本)9781665428767

Nowadays, modern warfare has changed from weapon-centric operations to network-centric system operations, which has led to the phenomenon of sea-level quantification of weaponry. It is an important research topic for combat commanders to select suitable weaponry from a large number of available resources when facing combat tasks. Recommendation technology is a solution to this problem, which can effectively solve the problem of information overload, so that combat commanders do not produce the phenomenon of 'information loss', in the shortest possible time to make the right decision. Therefore, this paper proposes a collaborative filtering recommendation algorithm for weaponry based on the knowledge graph and the idea of collaborative filtering. In this algorithm, the knowledge graph provides a clear data model with various association relationships, and the collaborative filtering algorithm can realize it without relying on professional experience, which can realize the recommendation process more actively, faster and more intelligently. © 2021 IEEE.

关键词： Collaborative filtering

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Application of high frequency scattering predication method in MMWSS

Application of high frequency scattering predication method ...

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2012 International Conference on Microwave and Millimeter Wave technology, ICMMT 2012

作者： Nie, J.K. Guo, L.X. Zhao, H. Ma, J. Fei, J.D. School of Science Xidian University Xi'an Shaanxi 710071 China Key Laboratory on Space System Simulation Beijing Simulation Center Beijing 100854 China

ISBN: (纸本)9781467321839

A radiation model of millimeter wave antenna is established in this paper. The electromagnetic field distribution on the seeker antenna is calculated in MMWSS based on PO method. According the numerical results, when target is in the near-field of antenna, the characteristic of echo amplitude has an obvious effect of multi-scattering points effect. © 2012 IEEE.

关键词： Millimeter waves

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ETM fusion algorithm based on log classification 2

ETM fusion algorithm based on log classification

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2nd IEEE International Conference on Information technology, Big Data and Artificial Intelligence, ICIBA 2021

作者： Lin, Wenxiang Liu, Desheng Science and Technology on Complex Electronic System Simulation Laboratory Space Engineering University Beijing China

ISBN: (纸本)9781665428767

With the improvement of computer computing power, the shortcomings of the computational inefficiency of the genetic mining algorithm are compensated, and the genetic mining become a research hotspot. In this paper, for the Evolutionary Tree Miner (ETM) algorithm in noise processing can not find the low-frequency effective path and remove the shortage of noise, an ETM fusion algorithm based on log classification is proposed. The algorithm performs process model mining for high-frequency and low-frequency logs separately, and get model fusion based on alignment ideas, Eventually mining the complete process model. Through the simulation of event log data verification, the improved algorithm achieves more complete process model mining than the original ETM algorithm. © 2021 IEEE.

关键词： Trees (mathematics)

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An Algorithm for Detecting the Discontinuous Areas in Interferometric Phase Images 7

An Algorithm for Detecting the Discontinuous Areas in Interf...

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7th International Conference on Image, Vision and Computing, ICIVC 2022

作者： Hongxing, Hao Ronghuan, Yu Huaquan, Hu Jing, Guo Space Engineering University Science and Technology on Complex Electronic System Simulation Laboratory Beijing China

ISBN: (数字)9781665467346

ISBN: (纸本)9781665467346

Interferometric measurements have been widely used in medical diagnosing and geographic mapping. The detection of discontinuous areas in interferometric phase images is very significant for subsequent processing (such as denoising, unwrapping, and so on). In this paper, the Wrapped Laplace Transform is proposed to adapt the edge detection methods to the characteristics of the interferometric phase image. Thresholding is committed to the transformation results to generate the preliminary detection results of the discontinuous area. Then the detected discontinuous areas are restored by dilation and erosion. The experimental results show that the proposed algorithm in this paper can effectively detect discontinuous areas in the interference phase image, while avoiding the effects of interference fringes. © 2022 IEEE.

关键词： Laplace transforms

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A Rapid Evaluation Method of Radar Tracking Accuracy 4

A Rapid Evaluation Method of Radar Tracking Accuracy

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4th International Conference on Electronic Information technology and Computer Engineering, EITCE 2020

作者： Zhao, Zhongwen Zhang, Xu Li, Guodong Science and Technology on Complex Electronics System Simulation Laboratory Space Engineering University Beijing China

ISBN: (纸本)9781450387811

In order to solve the problem that the accuracy evaluation method based on error grouping is complex and can only be applied to post-processing, a fast judgment analysis method of radar tracking accuracy is proposed. This method decouples the two main processes of accuracy evaluation, namely error estimation and error statistics, and achieves fast analysis of radar tracking accuracy through real-Time estimation of local accuracy and fast statistics of average accuracy of whole track. At the same time, this method avoids the discrimination of abnormal errors by applying robust median and median absolute difference estimation, further simplifies the error estimation process, so that it is more suitable for real-Time data analysis. © 2020 ACM.

关键词： Tracking radar

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Two-decadal shifts in phytoplankton functional taxa (2002–2022) in response to extreme marine heatwaves

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Optics Express 2025年第10期33卷 21961-21978页

作者： Ronglong Chen Deyong Sun Shengqiang Wang Yongjun Jia Muhammad Bilal Shuyan Lang Zhenghao Li State Key Laboratory of Climate System Prediction and Risk Management Nanjing University of Information Science and Technology Nanjing 210044 China School of Marine Sciences Nanjing University of Information Science and Technology Nanjing 210044 China Key Laboratory of Space Ocean Remote Sensing and Application Ministry of Natural Resources Beijing 100081 China National Satellite Ocean Application Service Beijing 100081 China Architecture and City Design Department College of Design and Built Environment King Fahd University of Petroleum and Minerals (KFUPM) Dhahran 31261 Saudi Arabia Interdisciplinary Research Center for Aviation & Space Exploration (IRC-ASE) King Fahd University of Petroleum and Minerals (KFUPM) Dhahran 31261 Saudi Arabia

Phytoplankton play a crucial role in the primary productivity of ocean ecosystems, rendering changes in their populations particularly consequential. The effects of extreme sea surface temperature (SST) on phytoplankton are noteworthy. However, the direct characterization of total biomass by chlorophyll for analysis is inaccurate for phytoplankton functional taxa (PFTs) with different sensitivity to SST. Through the method of Diagnostic pigment analysis (DPA), these organisms can be classified into six primary functional taxa based on their distinctive pigments, which play a vital role in elucidating their ecological functions and dynamics. This study employed optical remote sensing to reconstruct daily concentrations and occupancy of six PFTs in the Eastern China Marginal Sea (ECMS) over the past 20 years. Causal analyses were conducted to identify regions with varying sensitivity to SST changes and further explore the corresponding impacts on phytoplankton concentrations. Results revealed that high-causality areas in the Bohai Sea (BS) and Yellow Sea (YS) were primarily located in nearshore waters. In contrast, high-causality regions in the East China Sea (ECS) were farther offshore, while nearshore areas exhibited lower causality. The high-causality subregions experienced significant fluctuations in phytoplankton concentrations, particularly during marine heatwave (MHW) events, with a prevailing trend of decline in taxon concentrations driven by elevated SST. In comparison, low-causality subregions displayed weaker synchronization with SST changes, as other factors influenced taxa concentrations more prominently. Notably, while phytoplankton concentrations fluctuated significantly during extreme MHW events, they eventually reverted to baseline levels. However, with the increasing frequency and intensity of MHWs due to global warming, the capacity for phytoplankton to recover under such repeated stress remains uncertain. This study emphasizes the necessity of furt

关键词： Absorption coefficient Optical absorption Optical properties Remote sensing Spatial resolution Strain

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Construction and Application of Knowledge Graph of Weapon and Equipment system of systems

Construction and Application of Knowledge Graph of Weapon an...

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2021 International Conference on Electronic Information Engineering and Computer science, EIECS 2021

作者： Li, Xiao Liu, Desheng Space Engineering University Science and Technology on Complex Electronic System Simulation Laboratory Beijing China

ISBN: (纸本)9781665416740

In the context of diversified types of weapon and equipment and massive data quantification, how to model and store, manage and apply the data of various types of weapon and equipment is a problem that needs to be solved. The article analyzes the characteristics of the weapon and equipment system and proposes a method to construct the knowledge graph of the weapon and equipment system based on this method, which first constructs the ontology in the top-down order, then defines the edge nodes and fills in the structured data. Finally, the application is carried out according to the constructed knowledge graph, and the future development direction is proposed. © 2021 IEEE.

关键词： Information management

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Hyperspectral Image Anomaly Detection Based on Auto Encoder 4

Hyperspectral Image Anomaly Detection Based on Auto Encoder

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4th International Conference on Geoscience and Remote Sensing Mapping, GRSM 2022

作者： Li, Guanzhe Wu, Lingda Hao, Hongxing Science and Technology on Complex Electronic System Simulation Laboratory Space engineering university Beijing China

ISBN: (数字)9781510662179

ISBN: (纸本)9781510662162

The reason for the existence of small targets and sub-pixel targets in hyperspectral images is that the low spatial resolution leads to the phenomenon of mixed pixels, which makes some targets exist in the form of small targets and sub-pixel targets in the image. Moreover, the traditional anomaly detection algorithm introduces the regularization parameter into hyperspectral anomaly detection, but the regularization parameter needs to be manually set and adjusted. However, since the anomaly detection is carried out without prior information, in real situations, it is difficult to obtain the prior information of the target, so the regularization parameter may be difficult to determine. In addition, considering that traditional algorithms are not sensitive to small target pixel targets, a hyperspectral anomaly detection network based on self encoder is designed for hyperspectral images with small targets and sub-pixel targets. © 2023 SPIE.

关键词： Anomaly detection

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