Abstract In order to deal with the shortage of spacecraft telemetry, tracking, and command (TT&C) resources and the high complexity of planning and scheduling in the future, based on the current situation of the TT&C network in China, the construction requirements of space–ground integration TT&C network are put forward, and the basic framework is constructed. Referring to the random access mechanism of ground cellular mobile communication system, access once encountered TT&C mode is designed. This work introduces its basic idea, gives an example of the implementation process in the new form, designs the protocol stack system of random access TT&C, and probes into the key technologies, such as spacecraft access optimization selection strategy and panoramic (airspace) multi-beam and multi-target simultaneous TT&C technology, for reference of further research.
{"title":"Access once encountered TT&C mode based on space–air–ground integration network","authors":"Chao Li, Peijie Liu, Shiyuan Fu, Yiwen Jiao","doi":"10.1515/astro-2022-0208","DOIUrl":"https://doi.org/10.1515/astro-2022-0208","url":null,"abstract":"Abstract In order to deal with the shortage of spacecraft telemetry, tracking, and command (TT&C) resources and the high complexity of planning and scheduling in the future, based on the current situation of the TT&C network in China, the construction requirements of space–ground integration TT&C network are put forward, and the basic framework is constructed. Referring to the random access mechanism of ground cellular mobile communication system, access once encountered TT&C mode is designed. This work introduces its basic idea, gives an example of the implementation process in the new form, designs the protocol stack system of random access TT&C, and probes into the key technologies, such as spacecraft access optimization selection strategy and panoramic (airspace) multi-beam and multi-target simultaneous TT&C technology, for reference of further research.","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"31 1","pages":"390 - 404"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49495147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The observed primordial energy release of solar flare in the corona is explained by the mechanism of S. I. Syrovatskii, according to which the flare energy is accumulated in the current sheet. The flare release of the current sheet energy causes the observed manifestations of the flare, which are explained by the electrodynamical model of a solar flare proposed by I. M. Podgorny. According to this model, hard X-ray beam radiation on the solar surface is explained by the acceleration of electrons in field aligned currents caused by the Hall electric field in the current sheet. The study of the flare mechanism is impossible without performing magnetohydrodynamic (MHD) simulations above a real active region (AR), in which the calculation begins several days before the appearance of flares. When setting the problem, no assumptions were made about the flare mechanism. An absolutely implicit finite-difference scheme, conservative with respect to the magnetic flux, has been developed, which is implemented in the PERESVET code. MHD simulation in the real scale of time can only be carried out, thanks to parallel computations using compute unified device architecture (CUDA) technology. Methods have been developed that made it possible to stabilize the numerical instability arising near the boundary of the region. Calculation above AR 10365 for low viscosities ( Rm = 1 0 9 {rm{Rm}}=1{0}^{9} , Re = 1 0 7 {rm{Re}}=1{0}^{7} , ν Art Phoosphere = ν Magn Art Phoosphere = 1 0 − 4 {nu }_{text{Art Phoosphere}}={nu }_{text{Magn Art Phoosphere}}=1{0}^{-4} ) showed the appearance of a singular X-type line, in the vicinity of which a current sheet with accumulated magnetic energy for a flare can form. Also, by means of MHD simulation the appearance of singular lines above a real AR is shown, in which the magnetic field is a superposition of an X-type field and a diverging magnetic field. In such a superposition of configurations, even if the diverging field predominates, the formation of a current sheet is possible, which can explain the appearance of a flare of not very high power. The coincidence of the position of the source of the flare thermal X-ray radiation with the places of appearance of the current sheets confirms the mechanism of the solar flare, based on the accumulation of energy in the magnetic field of the current sheet.
摘要用S. I. Syrovatskii机制解释了观测到的太阳耀斑在日冕中的原始能量释放，根据该机制，耀斑能量是在电流片中积累的。耀斑释放的电流片能量引起了观测到的耀斑现象，用Podgorny提出的太阳耀斑电动力学模型解释了这一现象。根据该模型，太阳表面的硬x射线束辐射可以用电流片中的霍尔电场引起的场向电流中电子的加速来解释。耀斑机制的研究不可能在实际活动区域(AR)上进行磁流体动力学(MHD)模拟，在实际活动区域(AR)中，计算在耀斑出现前几天开始。在设置问题时，没有对耀斑机制做任何假设。开发了一种绝对隐式的有限差分格式，该格式对磁通量是保守的，并在PERESVET程序中实现。MHD仿真只能在真实时间尺度下进行，这要归功于使用CUDA技术的并行计算。已经开发了一些方法，使在区域边界附近产生的数值不稳定性趋于稳定成为可能。在ar10365上计算低粘度(Rm =1 0 9 { Rm {Rm}}=1{0}^{9}， Re =1 0 7 { Rm {Re}}=1{0}^{7}， ν Art photomsphere = ν Magn Art photomsphere =1 0−4 {nu}_{text{Art photomsphere}}={nu}_{text{Magn Art photomsphere}}=1{0}^{-4})，显示了一个奇异的x型线的出现，在其附近可以形成一个具有耀斑积累的磁能的电流片。此外，通过MHD模拟显示了真实AR上方奇异线的出现，其中磁场是x型磁场和发散磁场的叠加。在这样的叠加态中，即使发散场占主导地位，电流片的形成也是可能的，这可以解释功率不是很高的耀斑的出现。耀斑热x射线辐射源的位置与电流片出现的位置的重合，证实了基于电流片磁场能量积累的太阳耀斑的机制。
{"title":"Investigation of the mechanism of a solar flare by means of MHD simulations above the active region in real scale of time: The choice of parameters and the appearance of a flare situation","authors":"A. Podgorny, I. Podgorny, A. Borisenko","doi":"10.1515/astro-2022-0006","DOIUrl":"https://doi.org/10.1515/astro-2022-0006","url":null,"abstract":"Abstract The observed primordial energy release of solar flare in the corona is explained by the mechanism of S. I. Syrovatskii, according to which the flare energy is accumulated in the current sheet. The flare release of the current sheet energy causes the observed manifestations of the flare, which are explained by the electrodynamical model of a solar flare proposed by I. M. Podgorny. According to this model, hard X-ray beam radiation on the solar surface is explained by the acceleration of electrons in field aligned currents caused by the Hall electric field in the current sheet. The study of the flare mechanism is impossible without performing magnetohydrodynamic (MHD) simulations above a real active region (AR), in which the calculation begins several days before the appearance of flares. When setting the problem, no assumptions were made about the flare mechanism. An absolutely implicit finite-difference scheme, conservative with respect to the magnetic flux, has been developed, which is implemented in the PERESVET code. MHD simulation in the real scale of time can only be carried out, thanks to parallel computations using compute unified device architecture (CUDA) technology. Methods have been developed that made it possible to stabilize the numerical instability arising near the boundary of the region. Calculation above AR 10365 for low viscosities ( Rm = 1 0 9 {rm{Rm}}=1{0}^{9} , Re = 1 0 7 {rm{Re}}=1{0}^{7} , ν Art Phoosphere = ν Magn Art Phoosphere = 1 0 − 4 {nu }_{text{Art Phoosphere}}={nu }_{text{Magn Art Phoosphere}}=1{0}^{-4} ) showed the appearance of a singular X-type line, in the vicinity of which a current sheet with accumulated magnetic energy for a flare can form. Also, by means of MHD simulation the appearance of singular lines above a real AR is shown, in which the magnetic field is a superposition of an X-type field and a diverging magnetic field. In such a superposition of configurations, even if the diverging field predominates, the formation of a current sheet is possible, which can explain the appearance of a flare of not very high power. The coincidence of the position of the source of the flare thermal X-ray radiation with the places of appearance of the current sheets confirms the mechanism of the solar flare, based on the accumulation of energy in the magnetic field of the current sheet.","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"31 1","pages":"27 - 37"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48837767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuan An, Dan Chen, Nengjian Tai, Jun Zhu, Gen Zhang, Qi Zhang
Abstract Ever-increasing space debris poses a great threat to spacecraft safety; its removal debuts as an innovative technology and will be in demand in the future. This article proposes a design for micro/nano joint satellites composed of four micro/nanosatellites with high maneuverability to clear space debris. The design incorporates two operating modes with typical applications, and the joint satellite features and essential key technologies are introduced. With the aim to demonstrate well-performed image data fusion and processing of the design, four cameras with different spectral and optical properties are installed for each micro/nanosatellite to acquire images and spectral characteristics for multifeatured identification of debris based on comprehensive analysis. Due to the different remote sensing payloads of the four micro/nanosatellites, the joint satellite is also capable of remote sensing. Compared with a single micro/nanosatellite, the joint satellite is more accurate for debris identification and rapid on-orbit maneuverability in addition to the superior flexibility brought by a touch-and-unfold separating removal mechanism.
{"title":"A micro/nano joint satellite design of high maneuverability for space debris removal","authors":"Yuan An, Dan Chen, Nengjian Tai, Jun Zhu, Gen Zhang, Qi Zhang","doi":"10.1515/astro-2022-0035","DOIUrl":"https://doi.org/10.1515/astro-2022-0035","url":null,"abstract":"Abstract Ever-increasing space debris poses a great threat to spacecraft safety; its removal debuts as an innovative technology and will be in demand in the future. This article proposes a design for micro/nano joint satellites composed of four micro/nanosatellites with high maneuverability to clear space debris. The design incorporates two operating modes with typical applications, and the joint satellite features and essential key technologies are introduced. With the aim to demonstrate well-performed image data fusion and processing of the design, four cameras with different spectral and optical properties are installed for each micro/nanosatellite to acquire images and spectral characteristics for multifeatured identification of debris based on comprehensive analysis. Due to the different remote sensing payloads of the four micro/nanosatellites, the joint satellite is also capable of remote sensing. Compared with a single micro/nanosatellite, the joint satellite is more accurate for debris identification and rapid on-orbit maneuverability in addition to the superior flexibility brought by a touch-and-unfold separating removal mechanism.","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"31 1","pages":"310 - 317"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43157399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The analysis of radio emission of three new pulsars discovered at the Pushchino Radio Astronomy Observatory is presented. The detailed observations were carried out at a frequency of 111 MHz using the large phase array and the standard digital receiver with a total bandwidth of 2.245 MHz and a time resolution of 2.46 or 5.12 ms. All pulsars exhibit features of their radiation, the subpulse drift is observed in J0220+3622, the flare activity is exhibited in J0303+2248, and the nulling phenomenon has been detected in J0810+3725.
{"title":"Peculiarities of radio emission from new pulsars at 111 MHz","authors":"D. Teplykh, V. Malofeev, O. Malov, S. Tyul'Bashev","doi":"10.1515/astro-2022-0019","DOIUrl":"https://doi.org/10.1515/astro-2022-0019","url":null,"abstract":"Abstract The analysis of radio emission of three new pulsars discovered at the Pushchino Radio Astronomy Observatory is presented. The detailed observations were carried out at a frequency of 111 MHz using the large phase array and the standard digital receiver with a total bandwidth of 2.245 MHz and a time resolution of 2.46 or 5.12 ms. All pulsars exhibit features of their radiation, the subpulse drift is observed in J0220+3622, the flare activity is exhibited in J0303+2248, and the nulling phenomenon has been detected in J0810+3725.","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"31 1","pages":"166 - 171"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45324130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Message from the Guest Editor of the Special Issue on New Progress in Astrodynamics Applications","authors":"Yu Jiang","doi":"10.1515/astro-2022-0028","DOIUrl":"https://doi.org/10.1515/astro-2022-0028","url":null,"abstract":"","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"31 1","pages":"188 - 188"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45555920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Wang, Jing Cao, Nan Ye, Shouming Sun, Junfeng Li, Zhenyong Bo
Abstract Considering that some tasks will require the consistency of the position and attitude of the end-effector, multi-space-robot cooperative capture also needs to consider the synchronization of the two capture arms. Taking the dual-space robots as example, the trajectory planning problem before cooperative capture is focused. First, a drive-transform method based on trapezoidal velocity interpolation is proposed, which combines the advantages of these two methods to obtain the SE(3) motion trajectory, in which the attitude and position are planned synchronously. Then, the trajectory optimization model of cooperative capture is established, which takes the optimal time and the minimum attitude disturbance of the base as the optimization goals, and simultaneously satisfies that the two capture arms reach the capture point synchronously. In order to solve this multi-objective optimization problem, a dual-population multi-objective fruit fly algorithm based on non-dominated sorting was proposed. Finally, the simulation example of dual-space robots shows that the proposed algorithm is effective, and the analysis of the optimal solution set demonstrates that the optimized cooperative capture trajectory is smooth and synchronous.
{"title":"Cooperative capture trajectory optimization of multi-space robots using an improved multi-objective fruit fly algorithm","authors":"Y. Wang, Jing Cao, Nan Ye, Shouming Sun, Junfeng Li, Zhenyong Bo","doi":"10.1515/astro-2022-0198","DOIUrl":"https://doi.org/10.1515/astro-2022-0198","url":null,"abstract":"Abstract Considering that some tasks will require the consistency of the position and attitude of the end-effector, multi-space-robot cooperative capture also needs to consider the synchronization of the two capture arms. Taking the dual-space robots as example, the trajectory planning problem before cooperative capture is focused. First, a drive-transform method based on trapezoidal velocity interpolation is proposed, which combines the advantages of these two methods to obtain the SE(3) motion trajectory, in which the attitude and position are planned synchronously. Then, the trajectory optimization model of cooperative capture is established, which takes the optimal time and the minimum attitude disturbance of the base as the optimization goals, and simultaneously satisfies that the two capture arms reach the capture point synchronously. In order to solve this multi-objective optimization problem, a dual-population multi-objective fruit fly algorithm based on non-dominated sorting was proposed. Finally, the simulation example of dual-space robots shows that the proposed algorithm is effective, and the analysis of the optimal solution set demonstrates that the optimized cooperative capture trajectory is smooth and synchronous.","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"31 1","pages":"405 - 416"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43901064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract In order to process and visualise the monochromatic images of regions of the Sun obtained with the CCD multichannel spectroheliograph, the freely distributed programs ImageJ and ParaView were chosen and then fine-tuned. This reduced the time required to develop the data processing and visualization software for this instrument and also made it easier to make further corrections and additions to it.
{"title":"Processing and visualisation of a series of monochromatic images of regions of the Sun","authors":"F. V. Vereshchagin","doi":"10.1515/astro-2022-0004","DOIUrl":"https://doi.org/10.1515/astro-2022-0004","url":null,"abstract":"Abstract In order to process and visualise the monochromatic images of regions of the Sun obtained with the CCD multichannel spectroheliograph, the freely distributed programs ImageJ and ParaView were chosen and then fine-tuned. This reduced the time required to develop the data processing and visualization software for this instrument and also made it easier to make further corrections and additions to it.","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"31 1","pages":"20 - 21"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48838147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract I present a detection of four new triple-mode high-amplitude Delta Scuti variables, pulsating in the fundamental, first, and second overtone modes. This is a new addition to the ten known cases in the Galaxy. I used the data of ASAS-SN and analyzed them using the WinEfk code by V. P. Goranskij. Light elements and parameters of the light curves were obtained.
{"title":"New triple-mode high-amplitude Delta Scuti variables","authors":"Anton V. Khruslov","doi":"10.1515/astro-2022-0020","DOIUrl":"https://doi.org/10.1515/astro-2022-0020","url":null,"abstract":"Abstract I present a detection of four new triple-mode high-amplitude Delta Scuti variables, pulsating in the fundamental, first, and second overtone modes. This is a new addition to the ten known cases in the Galaxy. I used the data of ASAS-SN and analyzed them using the WinEfk code by V. P. Goranskij. Light elements and parameters of the light curves were obtained.","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"40 1","pages":"148 - 153"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41265486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. A. Drozdov, E. Vasiliev, Marina V. Ryabova, Y. Shchekinov, B. Nath
Abstract Supernovae explosions (SNe) in a stratified interstellar disc can create large scale structures and outflows perpendicular to the disc. Their morphology and emission characteristics depend on interrelations between the number of exploded SNe, the ISM vertical scale height, the height above the ISM disc at which SNe are located, and the mid-plane density of ambient gas. When observed such out-of-plane gas structures do characterize properties of the driving SNe and reveal the presence of underlying stellar clusters. Even though the morphology and emission properties of such structures are sensitive to characteristics of ambient gas they might be used for rough estimates of the clusters’ mass.
{"title":"Bubbles and OB associations","authors":"S. A. Drozdov, E. Vasiliev, Marina V. Ryabova, Y. Shchekinov, B. Nath","doi":"10.1515/astro-2022-0021","DOIUrl":"https://doi.org/10.1515/astro-2022-0021","url":null,"abstract":"Abstract Supernovae explosions (SNe) in a stratified interstellar disc can create large scale structures and outflows perpendicular to the disc. Their morphology and emission characteristics depend on interrelations between the number of exploded SNe, the ISM vertical scale height, the height above the ISM disc at which SNe are located, and the mid-plane density of ambient gas. When observed such out-of-plane gas structures do characterize properties of the driving SNe and reveal the presence of underlying stellar clusters. Even though the morphology and emission properties of such structures are sensitive to characteristics of ambient gas they might be used for rough estimates of the clusters’ mass.","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"31 1","pages":"154 - 165"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47077930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Proportional navigation guidance law (PNG) is widely used for passive homing missiles. But PNG often suffers from inaccurate tracking of target or even failure when the target is maneuvering quickly or releasing artificial decoys. In order to solve this problem, the angular acceleration compensation guidance law (AACG) is constructed by using line of sight (LOS) angular velocity and LOS angular acceleration. The stability analysis with Lyapunov stability theory shows that AACG system is asymptotically stable on a large scale under certain stability constraint conditions. AACG command is designed to be perpendicular to the LOS and optimized by gravity compensation. AACG is neither dependent on target acceleration nor the distance between the missile and the target. The numerical simulation results indicate that AACG has good guidance performance on air-to-air missiles when the target maneuvers violently or releases artificial decoys in the endgame term.
{"title":"Angular acceleration compensation guidance law for passive homing missiles","authors":"Jixin Li, Xiaogeng Liang, Keqiang Xia, Yilin You","doi":"10.1515/astro-2022-0039","DOIUrl":"https://doi.org/10.1515/astro-2022-0039","url":null,"abstract":"Abstract Proportional navigation guidance law (PNG) is widely used for passive homing missiles. But PNG often suffers from inaccurate tracking of target or even failure when the target is maneuvering quickly or releasing artificial decoys. In order to solve this problem, the angular acceleration compensation guidance law (AACG) is constructed by using line of sight (LOS) angular velocity and LOS angular acceleration. The stability analysis with Lyapunov stability theory shows that AACG system is asymptotically stable on a large scale under certain stability constraint conditions. AACG command is designed to be perpendicular to the LOS and optimized by gravity compensation. AACG is neither dependent on target acceleration nor the distance between the missile and the target. The numerical simulation results indicate that AACG has good guidance performance on air-to-air missiles when the target maneuvers violently or releases artificial decoys in the endgame term.","PeriodicalId":19514,"journal":{"name":"Open Astronomy","volume":"31 1","pages":"287 - 299"},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47605499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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