Contents
2024
Volume: 41 Issue 3
20 Article(s)
Export citation format
Peering into Aerospace Infrared Remote Sensing Detection Technology：Evolutionary Patterns and Development Trends
Yaran LI, Haochen BAO, and Shengli SUN
The space-borne infrared remote sensing technology holds significant value for national economic growth and strategic defense capability enhancement，serving as a pivotal driver for the advancement in China's infrared technology and a cornerstone for achieving the strategy of becoming a space technology powerhouse.TThe space-borne infrared remote sensing technology holds significant value for national economic growth and strategic defense capability enhancement，serving as a pivotal driver for the advancement in China's infrared technology and a cornerstone for achieving the strategy of becoming a space technology powerhouse.This article highlights the research progress in several crucial areas closely tied to infrared technology，including meteorological satellite observation technology，precise imaging of terrestrial objects，infrared focal plane detector technology，and remote sensing applications in the new era.By systematically tracing the evolution of these technologies，summarizing their developmental patterns，and delving into the latest research findings，a precise insight into the potential future directions of space-borne infrared technology is provided，thereby offering solid support for the continuous innovation of China's infrared technology and the thriving development of its aerospace industry..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 25 (2024)
Technical Characteristics and Development Prospects of the Intelligent Collaborative Observation System of Fengyun Satellite：from Single Satellite Observations to System Collaboration
Yaohai DONG
Fengyun satellite is one of the most widely used and effective satellite series in China's civilian remote sensing satellites，and has played an important role in promoting national economic development and strengthening the construction of independent equipment.Facing the challenges such as high-quality developmentFengyun satellite is one of the most widely used and effective satellite series in China's civilian remote sensing satellites，and has played an important role in promoting national economic development and strengthening the construction of independent equipment.Facing the challenges such as high-quality development，disaster prevention and mitigation，climate change，ecological civilization construction，and national security，Fengyun satellite will adhere to the innovation-driven development strategy，take systematization and intelligence as the main development directions，break through key technologies，and build an intelligent cooperative observation system.In this paper，the necessity of the intelligent cooperative observation system of Fengyun satellite in multiple aspects，e.g.，the systematic development of remote sensing satellites，intelligent network enabling，and all-round environmental protection，is discussed.Based on the analysis of the development history of meteorological satellites at home and abroad，the construction idea and preliminary plan of an intelligent cooperative observation system for the new generation of Fengyun meteorological satellite are put forward，and the key technologies in the system construction are analyzed.Finally，the application prospects of the intelligent cooperative observation system of Fengyun satellite are forecasted..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 37 (2024)
Overview of Takeover Control Technology for Failed Spacecraft
Panfeng HUANG, Yingbo LU, Fan ZHANG, and Ya LIU
The takeover control of failed spacecraft is of great significance in realizing the life extension of on-orbit spacecraft， avoiding the waste of payloads， realizing the occupancy regeneration of limited orbital resources， and maintaining space security. On the systematic analysis of the characteristics of takeover contThe takeover control of failed spacecraft is of great significance in realizing the life extension of on-orbit spacecraft， avoiding the waste of payloads， realizing the occupancy regeneration of limited orbital resources， and maintaining space security. On the systematic analysis of the characteristics of takeover control means for failed spacecraft， in this article， the takeover control is divided into two categories， i.e.， contact means and non-contact means， based on whether contact occurs during the takeover control process. Subsequently， the characteristics of various takeover control methods are introduced， and the key technologies involved in the takeover control tasks of spacecraft are summarized. The future development directions of intelligent and autonomous takeover control for spacecraft are given. This article is expected to provide technical reference and basis for future takeover control missions of failed spacecraft..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 47 (2024)
Path Planning with Homotopy Class Constraints for Space Robots
Weiran YAO, Haoyu TIAN, Ouyang ZHANG, Yi ZENG, Guanghui SUN, and Ligang WU
The path planning with homotopy class constraints is an important technical means for the path planning for space robots. It can effectively achieve lightweight computation of path planning under complex constraints， and has important theoretical significance and application value. In the path planning with homotopy clThe path planning with homotopy class constraints is an important technical means for the path planning for space robots. It can effectively achieve lightweight computation of path planning under complex constraints， and has important theoretical significance and application value. In the path planning with homotopy class constraints， the set of robot's feasible paths is limited within a homotopy structure with good functional properties. The search for optimized paths is carried out within the homotopy structure， which ensures the effectiveness of the path planning while reducing the complexity of the algorithm. In this paper， the approximation algorithm frameworks for homotopy-based path planning， the path homotopy construction methods， and the solutions to the planning problems are introduced. The progress of homotopy path planning for space robots in recent years is analyzed from two aspects， i.e.， path homotopy construction methods with constrains and homotopy optimization search. According to the current research situation， the future development of homotopy path planning methods for space robots is prospected..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 63 (2024)
Review on the Fluid-structure Coupling Characteristicsin the Water Entry of Cross-media Vehicles
Hui QI, Jing GUO, Fuqing CHU, Hao WU, Xianglong YANG, Haibo ZHAO, Hao FU, and Peng WANG
In this paper，the research progress on the water entry of cross-media vehicles is comprehensively reviewed，with particular emphases on the fluid-structure couplingcharacteristics，the impact on elastic body structures，and high-speed water entry phenomena.The water entry process involves complex fluid dynamics phenomena，In this paper，the research progress on the water entry of cross-media vehicles is comprehensively reviewed，with particular emphases on the fluid-structure couplingcharacteristics，the impact on elastic body structures，and high-speed water entry phenomena.The water entry process involves complex fluid dynamics phenomena，including cavitation，impact loads，and interactions with the dynamic characteristics of vehicles，all of which significantly influence the design and performance of the vehicle.The fundamental concept of cross-media vehicles is discussed，which have unique strategic applications.The key challenges during water entry include dealing with significant impact loads and complex fluid dynamics，which necessitate the precise control over the shape，entry speed，and attitude of a vehicle so as to optimize its performance.The effects of the shape of a vehicle on its impact responses and cavitation dynamics are studied，and the water entry experiments under various conditions are conducted with high-speed photography and sensor technology.The obtained results could assist researchers in observing and analyzing phenomena such as cavitation formation，fluid ejection，and subsequent cavity closure.With the development in computational technology，simulation techniques are used to study multiphase flow dynamics and interactions with vehicle structures.In summary，the study of water entry for cross-media vehicles is an interdisciplinary field.By thoroughly understanding the physical phenomena and mechanical responses during water entry，scientific foundations can be laid for the design and operation of future vehicles，driving the development of integrated air-sea vehicle technology..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 74 (2024)
Evolution and Intelligent Technology Prospect of Starship-superheavy System
Jialin WU, Yinghua SHENG, Chuan CHENG, and Zhong ZHANG
The evolution and intelligent technology prospect of the starship-superheavy system is analyzed in comparison with previous space transportation systems.First，the processes of macro-evolution and micro-verification for the starship-superheavy system are reviewed.Then，the advantages and challenges of the new space logisThe evolution and intelligent technology prospect of the starship-superheavy system is analyzed in comparison with previous space transportation systems.First，the processes of macro-evolution and micro-verification for the starship-superheavy system are reviewed.Then，the advantages and challenges of the new space logistics system are assessed based on the starship-superheavy system.Finally，the internal logic of the evolution and intelligent technology prospect is investigated based on the capital-driven space transportation system.The results show that the development concept of starship-superheavy is “innovation-driven，market operation；macro-evolution，micro-verification”.The essence is that the internal needs of capital gain promote the rapid integration and application of new technologies and new platforms..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 87 (2024)
Innovation and Exploration
Open Agile Architecture Design for Heterogeneous Mega Constellations
Zhansheng CHEN, and Weige ZHU
The heterogeneity of mega constellations is a market-driven and mission-driven trend of space-based systems in the future，and how to develop，use，and manage heterogeneous mega constellations well is a hot topic of continuous discussion in the industry. In view of the problems of heterogeneous mega constellations in systThe heterogeneity of mega constellations is a market-driven and mission-driven trend of space-based systems in the future，and how to develop，use，and manage heterogeneous mega constellations well is a hot topic of continuous discussion in the industry. In view of the problems of heterogeneous mega constellations in system design， collaborative networking， flexible application， and system operation， in this paper， the construction concept of a seven-in-one heterogeneous mega constellation system of“interconnection，perception， intelligent calculation， express transport， research & verify， manage & control，and convenient application” is proposed， aiming at the requirements of “dynamic collaboration，high-quality service，seamless service， and easy control”.The open design concept is adopted to realize fast，flexible，and independent constellation resource integration and scheduling. he system supports modularization， scalable multi-missions， and multi-application on-demand services..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 95 (2024)
Mechanical Properties and Damping Capacity of CNT Reinforced Aluminum Maxtrix Composites
Jinghong HUANG, Rezhen ZOU, Hang CHEN, Shuai ZHU, Yan JIANG, Genlian FAN, Zhanqiu TAN, Zhiqiang LI, and Di ZHANG
Carbon nanotube （CNT） reinforced aluminum matrix （CNT/Al） composites have the advantages of light weight，high strength，high modulus，and easy processing，and have a great application prospect in the aerospace field as lightweight materials.In order to obtain a lightweight structural material with both good mechanical proCarbon nanotube （CNT） reinforced aluminum matrix （CNT/Al） composites have the advantages of light weight，high strength，high modulus，and easy processing，and have a great application prospect in the aerospace field as lightweight materials.In order to obtain a lightweight structural material with both good mechanical properties and perfect damping capacity，the 1.5%（mass fraction） CNT/2A12 composite is prepared by flake powder metallurgy and elemental alloying.When the composite is aged at 130 ℃ for 6~14 h，it exhibits high tensile strength and good ductility.The tensile strength is up to 595 MPa at 12 h of aging，and the elongation is up to 14.0% at 8 h of aging.The damping capacity of the composite is about 0.005 at 0~180 ℃，but significantly increases at 180~300 ℃，reaching 0.05 at 300 ℃.The damping capacity is hardly affected by the aging time.The storage modulus of the composite decreases when the test temperature increases，and increases at 180~300 ℃ when the vibration frequency increases.Taking the overall properties into consideration，at 130 ℃ and 8 h，the 1.5%（mass fraction） CNT/2A12 composite has the optimal mechanical properties and damping capacity..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 103 (2024)
Multi-objective Approximate Optimization for the Boost-glide Morphing Flight Vehicle Trajectory Scheme
Yiyun ZHAI, Teng LONG, Zhenyu LIU, Renhe SHI, and Nianhui YE
Aiming at the problems such as the difficulty in optimizing morphing and the contradiction of multiple design objectives，the multi-objective approximate optimization for the boost-glide morphing flight vehicle trajectory scheme is studied.First，the optimization framework of an all-course trajectory scheme for boost-gliAiming at the problems such as the difficulty in optimizing morphing and the contradiction of multiple design objectives，the multi-objective approximate optimization for the boost-glide morphing flight vehicle trajectory scheme is studied.First，the optimization framework of an all-course trajectory scheme for boost-glide morphing flight vehicles is proposed，and the control parameters and trajectory scheme parameters are optimized through the inner and outer layers，respectively.Then，a multi-objective optimization model is formulated for the trajectory scheme that optimizes a target with the minimum takeoff mass and the maximum flight range.In the trajectory modeling，the boost stage trajectory model is constructed based on the Newton iteration method，and the optimal morphing model of reentry glide stage trajectory is established based on the pseudo-spectral method.Furthermore，a multi-objective approximate constrained optimization method based on differential evolution （MACO-DE） is proposed to optimize the boost-glide morphing flight vehicle trajectory scheme.Compared with the initial scheme，the take-off mass can be reduced by 3.81% at the same flight range，and the flight range can be improved by 6.62% at the same take-off mass，which demonstrates the reasonability of the all-course trajectory scheme and the effectiveness of the MACO-DE..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 110 (2024)
A Multi-domain Feature-guided Method for Unsupervised Ship Detection in SAR Images
Liang CHEN, Jianhao LI, Cheng HE, and Hao SHI
How to improve the ship detection performance with limited annotation samples in a synthetic aperture radar （SAR） image has always been a hot spot in SAR image processing.In this paper，a multi-domain feature-guided unsupervised domain adaptation method is proposed.The knowledge is transferred from the annotated source How to improve the ship detection performance with limited annotation samples in a synthetic aperture radar （SAR） image has always been a hot spot in SAR image processing.In this paper，a multi-domain feature-guided unsupervised domain adaptation method is proposed.The knowledge is transferred from the annotated source domain （optical images） to the unannotated target domain （SAR images），and thus the dependency on the labeled SAR images is reduced.At the same time，the frequency domain transfer module，attention area-enhanced （AAE） module，and adaptive weighted module are designed to narrow the domain gap between the optical and SAR image domains，improve the efficiency of feature alignment between the source and target domains，and enhance the capability of feature transfer under challenging samples.Extensive experiments are carried out on public published datasets.The results show that the proposed modules are 10% better than the baseline，and the overall network outperforms other state-of-the-art （SOTA） methods..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 121 (2024)
Research Progress on the Working Mechanism of Ionic Liquid Electrospray Thrusters
Yuxiang CHEN, Yufeng CHENG, Jinrui ZHANG, Guangchuan ZHANG, Haibin TANG, and Weizong WANG
Ionic liquid electrospray thrusters are easy to miniaturize， and have the characteristics of high specific impulse and precise thrust accuracy. They are suitable for small satellites， space gravitational wave detection， etc.， and possess great potential for development. The understanding and study on the working mechanIonic liquid electrospray thrusters are easy to miniaturize， and have the characteristics of high specific impulse and precise thrust accuracy. They are suitable for small satellites， space gravitational wave detection， etc.， and possess great potential for development. The understanding and study on the working mechanism of electrospray not only are supportive of the engineering applications of ionic liquid electrospray thrusters， but also lay a foundation for their further development in the future. Therefore， in this paper， the research progress of the working mechanism of ionic liquid electrospray thrusters is overviewed. First， the development history and current situation of electrospray thrusters are reviewed. Then， taking the three basic working processes of ionic liquid electrospray thrusters as the starting point， the basic theories and research status of the cone jet formation and emission mechanism， the beam modes and extraction characteristics， and the plume neutralization mechanism are introduced and summarized. Finally， prospects are proposed for ionic liquid electrospray thrusters on the future research direction of their working mechanism and the development directions of their engineering applications..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 130 (2024)
Microwave Photonic Radar Chip Based on Thin-film Lithium Niobate
Ming LI, Dezhe YUAN, Simin LI, and Shilong PAN
Microwave photonic radar has the advantages such as high resolution，rapid processing speed，multi-band capability，and multifunctionality，and has broad prospects in aerospace applications.In order to meet the stringent requirements of the size，weight，and power consumption of radar systems in aerospace applications，integrMicrowave photonic radar has the advantages such as high resolution，rapid processing speed，multi-band capability，and multifunctionality，and has broad prospects in aerospace applications.In order to meet the stringent requirements of the size，weight，and power consumption of radar systems in aerospace applications，integration has become the main trend in the development of microwave photonic radar.In this paper，a microwave photonic radar chip fabricated on a thin-film lithium niobate platform is introduced.This chip facilitates the generation of frequency-multiplied radar signals and the de-chirped of received echo signals.Furthermore，the range-finding experiments involving targets positioned at varying distances from the antenna are carried out.The results show that the measured distances are consistent with the actual distances，and the error margins are less than 4 mm..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 143 (2024)
An Intelligent Inspection Method for Spacecraft Surface Damage Based on Small Sample Data Augmentation
Chunwu LIU, Qingyun FANG, and Zhaokui WANG
The surface damage to a spacecraft in orbit may have serious consequences， and thus real-time damage inspection is required. In order to solve the problem that spacecraft damage image samples are difficult to obtain， in the paper， a generative adversarial network （GAN） for spacecraft surface damage based on small samplThe surface damage to a spacecraft in orbit may have serious consequences， and thus real-time damage inspection is required. In order to solve the problem that spacecraft damage image samples are difficult to obtain， in the paper， a generative adversarial network （GAN） for spacecraft surface damage based on small sample data augmentation is proposed by means of the intelligent inspection method. The network can learn the feature texture representation of a single input image， and generate a large number of fine-grained samples similar to the features of the input image， thus realizing the expansion of a small number of image data samples. The YOLO object inspection algorithm is used to inspect and identify the surface defects and damage in the expanded image samples， and high inspection precision is obtained. The proposed network can provide technical support for the future spacecraft health monitoring and evaluation， the application of generalized service robots， and the in-situ construction of space..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 150 (2024)
Modeling and Control of a Fully-actuated Tilting Quadrotor Gun-armed UAV
Fan CAO, Jun WANG, Chichen ZHANG, Shanghua BAO, Jiangqi XIE, and Yuchong YANG
Owing to the coupling of position and attitude control， a conventional under-actuated quadrotor gun-armed unmanned aerial vehicle （UAV） is incapable of hovering fire with pitch angles. Besides， the fire control strategy is complicated during the mobile fire process. In this paper， a fully-actuated tilting quadrotor gunOwing to the coupling of position and attitude control， a conventional under-actuated quadrotor gun-armed unmanned aerial vehicle （UAV） is incapable of hovering fire with pitch angles. Besides， the fire control strategy is complicated during the mobile fire process. In this paper， a fully-actuated tilting quadrotor gun-armed UAV is designed as a gun platform， by which not only the system is decoupled but also the control allocation method is simplified. First， the system is modeled by the Newton-Euler method mathematically. Then， a controller is designed based on the backstepping approach， and the stability of the system is verified. Finally， simulation experiments are conducted with the Simulink software. The experimental results demonstrate that the fully-actuated tilting quadrotor gun-armed UAV model designed in this study can achieve decoupled control of position and attitude with a minimal tracking error. It can meet the requirements of hovering and mobile fire missions， and is suitable for flight/fire control systems with high real-time demands..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 159 (2024)
Design Optimization and Experimental Verification of Trundle Bearing Mechanisms for Spacecrafts
Decai YANG, Jianhui LI, Chuankun QU, Daxing HUANG, Zhifei MA, Zhiyi WANG, and Zhiyuan QIAN
Based on the trundle bearing mechanisms adopted by China's space station for solar-oriented driving mechanisms，an improved conical roller scheme is proposed.The contact forms of the roller-rail kinematic pairs are focused，the phenomenon of "sliding in rolling" existed in the cylindrical shape roller schemBased on the trundle bearing mechanisms adopted by China's space station for solar-oriented driving mechanisms，an improved conical roller scheme is proposed.The contact forms of the roller-rail kinematic pairs are focused，the phenomenon of "sliding in rolling" existed in the cylindrical shape roller scheme is analyzed，and the design of roller structure is optimized.In order to verify the correctness，engineering feasibility，and improvement effectiveness of the improved scheme，the roll-slip ratio is calculated，the effects of factors such as machining precision，assembly deviation，and space temperature environment on the roll-slip ratio are assessed，and the effects of the improved scheme on the mechanical interface and load conditions are analyzed.In addition，vacuum life tests are carried out.The results suggest that the improved scheme can realize pure rolling of roller-rail kinematic pairs in theory，has good tolerance and adaptability to machining precision，assembly deviation，and space temperature environment，has no influence on the mechanical interface and load conditions，and can effectively improve the contact status of the roller-rail kinematic pairs and prolong the life，meeting the application requirements..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 167 (2024)
Intra-pulse and Inter-pulse Motion Compensation for High-resolution Space-borne Inverse Synthetic Aperture Radar Imaging
Lizhong JIANG, Yining LUO, Bangjie ZHANG, Gang XU, and Lei XIAO
In recent years，space situation awareness has garnered increasing attention in both military and civilian fields.Space-borne inverse synthetic aperture radar （SBISAR） is an important tool for space situational awareness.It enables high-resolution imaging of space targets，and supports subsequent tasks such as component In recent years，space situation awareness has garnered increasing attention in both military and civilian fields.Space-borne inverse synthetic aperture radar （SBISAR） is an important tool for space situational awareness.It enables high-resolution imaging of space targets，and supports subsequent tasks such as component extraction，posture estimation，and type identification.However，in SBISAR imaging scenarios，complex and non-uniform high-speed relative motion exists between the platform and the space maneuvering targets，rendering traditional range-Doppler （RD） imaging methods ineffective.Therefore，motion compensation should be considered. In this paper，two typical motion errors are discussed，i.e.，the failure of the traditional “stop-go-stop” model under high radial velocities and the inconsistent target rotation speeds within long coherent processing intervals （CPIs），and a specific algorithm is designed for intra-pulse and inter-pulse motion compensation.First，a signal model for SBISAR imaging is established.Then，based on the minimum entropy criterion，a parameter estimation cost function is constructed to estimate the chirp rate of the echo signal，and the obtained estimation is used to construct a compensation term for intra-pulse motion compensation.Similarly，an image entropy cost function is established to estimate the rotational parameters，achieving spatial-variant phase compensation for rotational motion.The proposed algorithm can effectively address the range extension and azimuth defocusing issues by traditional RD imaging algorithms in the case of high-speed maneuvering，and enables the high-resolution imaging of space targets by SBISAR.Through the experimental analysis based on the simulation data，the effectiveness of the proposed algorithm is validated..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 176 (2024)
Dual-broadband Linear-to-circular Polarizer Based on Antenna-filter-Antenna Unit Cell Structure
Yiwen LU, Xuanfeng TONG, Weimin ZENG, Xiaoma XUE, Rui AN, and Zhihao JIANG
Linear-to-circular polarizers can play an important role in the antenna systems for satellite communications.In view of the requirements of K/Ka-band satellite communications，in this paper，a dual-broadband linear-to-circular polarizer is proposed，in which the antenna-filter-antenna （AFA） structure is adopted and the duLinear-to-circular polarizers can play an important role in the antenna systems for satellite communications.In view of the requirements of K/Ka-band satellite communications，in this paper，a dual-broadband linear-to-circular polarizer is proposed，in which the antenna-filter-antenna （AFA） structure is adopted and the dual-band receiving and transmitting antennas are independent.In particular，the working bandwidth can be expanded by stacking the patches，resulting in a unit cell size of 0.4λK×0.37λK×0.27λK.With the polarizer，an incident x-polarized wave can be converted into a right-hand circular-polarized （RHCP） wave at the K-band，whereas an incident y-polarized wave can be converted into a left-hand circular-polarized （LHCP） wave at the Ka-band.A polarizer prototype is fabricated and tested.The measured results indicate that the operating bandwidth of the polarizer is 9.8% （18.3~20.2 GHz） and 7.8% （28.5~30.82 GHz） within the incidence angle ranging from 0° to 25°..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 187 (2024)
Special Paper of Expert
Joint All-domain Command and Control Technology Based on Networked Information System and its Future Perspectives
Hongqing XU
Addressing the needs of modern warfare operations，the concept of joint all-domain operations （JADOs） offers a solution by transcending traditional combat domain boundaries.This approach facilitates information sharing，force integration，and coordinated operations among various military branches and operational domains.CAddressing the needs of modern warfare operations，the concept of joint all-domain operations （JADOs） offers a solution by transcending traditional combat domain boundaries.This approach facilitates information sharing，force integration，and coordinated operations among various military branches and operational domains.Consequently，it enhances the operational efficiency，boosts the command agility，and optimizes the resource distribution.The array of benefits delivered by JADOs has shifted the focus towards the research and development of the joint all-domain command and control （JADC2） technology based on the networked information system.This paper offers a systematic analysis on the development history，technical applications，architectural design，and related technologies of JADC2.Meanwhile，the relevant global research status and development trends are examined，with the objectives of providing insights and recommendations to the further progress of the JADC2 technology..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 1 (2024)
Cheng FANG, Mingde DING, Pengfei CHEN, Chuan LI, Xin CHENG, Yang GUO, Yu DAI, and Zhen LI
The space mission of Lagrange-V solar observatory （LAVSO） proposed by Nanjing University，China Meteorological Administration，and Shanghai Academy of Spaceflight Technology，which is also dubbed as “Xihe-2”，will be the first man-made probe to be launched to the fifth Lagrange point of the solar-terrestrial system.It aimsThe space mission of Lagrange-V solar observatory （LAVSO） proposed by Nanjing University，China Meteorological Administration，and Shanghai Academy of Spaceflight Technology，which is also dubbed as “Xihe-2”，will be the first man-made probe to be launched to the fifth Lagrange point of the solar-terrestrial system.It aims to precisely measure the vector magnetic fields，reveal the three-dimensional solar eruptions and provide accurate warning and forecasting of solar activities，and thus answer the two important scientific and application problems in the fields of solar physics and space weather，i.e.，“the generation and evolution of solar magnetic fields and their connections with the solar eruptions” and “the propagation of solar eruptions and their relationships with the hazardous space weather”.In this paper，the scientific and application objectives，payloads，and preliminary plans of “Xihe-2” are overviewed.With the solar observations in the Sun-Earth direction，the implementation of “Xihe-2” will usher in the era of China’s solar stereoscopic observations，expand human’s understanding on the mechanisms of solar eruptions，and bring revolutionary breakthroughs in the research of space weather..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 9 (2024)
Adaptive Fuzzy Super-Twisting Control Law for Ultra-high-speed Vehicle
Xiaokui YUE, Rongyi GUO, Yibo DING, and Yuhao WANG
An adaptive fuzzy super-twisting control law is proposed to meet the high-precision and robust control requirements for ultra-high speed vehicle under multi-source disturbances.First，a control-oriented dynamic model for ultra-high speed vehicle is established.Second，the controller is designed by the generalized super-tAn adaptive fuzzy super-twisting control law is proposed to meet the high-precision and robust control requirements for ultra-high speed vehicle under multi-source disturbances.First，a control-oriented dynamic model for ultra-high speed vehicle is established.Second，the controller is designed by the generalized super-twisting algorithm to achieve the high-precision convergence of sliding mode variables and tracking errors.Meanwhile，a high-order homogeneous observer is introduced into the controller to estimate the complex disturbances of the vehicle，and feedforward compensation is done in the control law，which can improve the robustness of the controller.Subsequently，a direct correlation between the control gain and the sliding mode variables is established based on the adaptive fuzzy law and expert experience.Compared with traditional adaptive laws，the proposed adaptive law can achieve the control gain adjustment quickly，while balancing the control requirements such as response speed，robustness，and chattering suppression.Finally，an ultra-high speed vehicle considering complex multi-source disturbances is simulated，and the obtained results demonstrate that the adaptive fuzzy super-twisting control law is effective..
AEROSPACE SHANGHAI
- Publication Date: Jun. 25, 2024
- Vol. 41, Issue 3, 17 (2024)
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20