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| 1 | Review:Recent advances in multisensor multitarge11racking using random finite set显示文摘In this study,we provide an overview of recent advances in multisensor multitarget tracking based on the random finite set(RFS)approach.The fusion that plays a fundamental role in multisensor filtering is classified into data-level multitarget measurement fusion and estimate-level multitarget density fusion,which share and fuse local measurements and posterior densities between sensors,respectively.Important properties of each fusion rule including the optimality and sub-optimality are presented.In particulax,two robust multitarget density-averaging approaches,arithmetic-and geometric-average fusion,are addressed in detail for various RFSs.Relevant research topics and remaining challenges are highlighted. | Kai DA Tiancheng LI Yongfeng ZHU Hongqi FAN Qiang FU | 2021 | Frontiers of Information Technology & Electronic Engineering2021，22，1： | 5 |
| 2 | Multi-EAP: Extended EAP for multi-estimate extraction for SMC-PHD filter显示文摘The ability to extract state-estimates for each target of a multi-target posterior, referred to as multi-estimate extraction(MEE), is an essential requirement for a multi-target filter, whose key performance assessments are based on accuracy, computational efficiency and reliability. The probability hypothesis density(PHD) filter, implemented by the sequential Monte Carlo approach,affords a computationally efficient solution to general multi-target filtering for a time-varying number of targets, but leaves no clue for optimal MEE. In this paper, new data association techniques are proposed to distinguish real measurements of targets from clutter, as well as to associate particles with measurements. The MEE problem is then formulated as a family of parallel singleestimate extraction problems, facilitating the use of the classic expected a posteriori(EAP) estimator, namely the multi-EAP(MEAP) estimator. The resulting MEAP estimator is free of iterative clustering computation, computes quickly and yields accurate and reliable estimates. Typical simulation scenarios are employed to demonstrate the superiority of the MEAP estimator over existing methods in terms of faster processing speed and better estimation accuracy. | Li Tiancheng Juan M.Corchado Sun Shudong Fan Hongqi | 2017 | Chinese Journal of Aeronautics2017，30，1： | 4 |
| 3 | A systematic survey on the diagnosis strategy and patient management of type 1 diabetes by Chinese physicians显示文摘The qualification of physicians is a key factor in controlling type 1 diabetes(T1 D) since they provide crucial information to their patients about self-management. To investigate whether Chinese physicians' medical strategies influence the control of T1 D in their patients, we designed a questionnaire to survey Chinese physicians, which covered their diagnosis and patient-management strategies for T1 D. A total of 442 completed questionnaires were received from 35 public hospitals in 12 cities. The results showed Chinese physicians mainly diagnosed T1 D based on the clinical features and islet dysfunction. One-third of physicians in this study still prescribed non-basal-bolus insulin regimens to their T1 D patients. More than 80% of the doctors prescribed alpha-glucosidase inhibitors as adjunctive therapy, in addition to insulin therapy. Moreover, most of the physicians in China did not pay attention to identify coexistent autoimmune diseases. T1 D patients in China were not armed with self-management knowledge and skills, which should be provided by their doctors. One of the circumstances leading to insufficient disease control in Chinese T1 D patients is the ineffective therapeutic strategy prescribed by their physicians. We need to promote knowledge of efficient strategies among physicians in China to achieve better disease control in Chinese T1 D patients in the future. | Yong Gu Hsiang-Ting Hsu Jing Zhu Xuqin Zheng Hemin Jiang Hongqi Fan Tao Yang | 2018 | Science China(Life Sciences)2018，61，3： | 3 |
| 4 | Fast density peak-based clustering algorithm for multiple extended target tracking显示文摘The key challenge of the extended target probability hypothesis density (ET-PHD) filter is to reduce the computational complexity by using a subset to approximate the full set of partitions. In this paper, the influence for the tracking results of different partitions is analyzed, and the form of the most informative partition is obtained. Then, a fast density peak-based clustering (FDPC) partitioning algorithm is applied to the measurement set partitioning. Since only one partition of the measurement set is used, the ET-PHD filter based on FDPC partitioning has lower computational complexity than the other ET-PHD filters. As FDPC partitioning is able to remove the spatially close clutter-generated measurements, the ET-PHD filter based on FDPC partitioning has good tracking performance in the scenario with more clutter-generated measurements. The simulation results show that the proposed algorithm can get the most informative partition and obviously reduce computational burden without losing tracking performance. As the number of clutter-generated measurements increased, the ET-PHD filter based on FDPC partitioning has better tracking performance than other ET-PHD filters. The FDPC algorithm will play an important role in the engineering realization of the multiple extended target tracking filter. | SHEN Xinglin SONG Zhiyong FAN Hongqi FU Qiang | 2019 | Journal of Systems Engineering and Electronics2019，30，3： | 2 |
| 5 | Spherical harmonic series solution of fields excited by vertical electric dipole in earth-ionosphere cavity显示文摘The spherical harmonic series expression of electromagnetic fields excited by ELF/SLF vertical electric dipole in the spherical earth-ionosphere cavity is derived when the earth and ionosphere are regarded as non-ideal conductors.A method of speeding numerical convergence has been presented.The electromagnetic fields in the cavity are calculated by this algorithm,and the results show that the electromagnetic fields between the earth and the ionosphere are the sum of two traveling waves in the SLF band.Moreover,the results are in complete agreement with that of the well-known spherical second-order approximation in the SLF band.The electromagnetic fields in the cavity are a type of standing wave in the ELF band and the variation of the amplitude versus frequency coincides with Schumann’s resonance. | Yuanxin WANG Wensheng FAN Weiyan PAN Hongqi ZHANG | 2008 | Frontiers of Electrical and Electronic Engineering in China2008，3，1： | 2 |
| 6 | Designing Se- quence with Low Sidelobe Levels at Specified Intervals Based on PSD Fitting 显示文摘 | Wu Hao Song Zhiyong Fan Hongqi | 2015 | Electronics Letters2015，51，1： | 1 |
| 7 | Difference beam aided target detection in monopulse radar显示文摘The classical detection step in a monopulse radar system is based on the sum beam only,the performance of which is not optimal when target is not at the beam center. Target detection aided by the difference beam can improve the performance at this case. However, the existing difference beam aided target detectors have the problem of performance deterioration at the beam center, which has limited their application in real systems. To solve this problem, two detectors are proposed in this paper. Assuming the monopulse ratio is known, a generalized likelihood ratio test(GLRT) detector is derived, which can be used when targeting information on target direction is available. A practical dual-stage detector is proposed for the case that the monopulse ratio is unknown. Simulation results show that performances of the proposed detectors are superior to that of the classical detector. | Cai Fei Fan Hongqi Song Zhiyong Fu Qiang | 2015 | Chinese Journal of Aeronautics2015，28，5： | 1 |
| 8 | Promising clinical outcome of stereotactic body radiation therapy for patients with inoperable Stage I/II non–small-cell lung cancer显示文摘 | Tingyi Xia Hongqi Li Qingxuan Sun Yingjie Wang Naibin Fan Yong Yu Ping Li Joe Y. Chang | 2006 | International Journal of Radiation Oncology, Biology, Physics2006，，1： | 1 |
| 9 | Promising clinical outcome of stereotactic body radiation therapy for patients with inoperable Stage I/II non–small-cell lung cancer显示文摘 | Tingyi Xia Hongqi Li Qingxuan Sun Yingjie Wang Naibin Fan Yong Yu Ping Li Joe Y. Chang | 2006 | International Journal of Radiation Oncology Biology Physics2006，，1： | 1 |
| 10 | A New Algorithm for Sparse Frequency Waveform Design with Range Sidelobes Constraint显示文摘To suppress narrowband interferences,sparse frequency waveform can be transmitted by wideband radar systems. It suffers the high range sidelobes. A new algorithm for sparse frequency waveform design with range sidelobes constraint is proposed. The approach affords much better frequency stopband suppression by flexibly controlling sidelobes constraint using Weighted integrated sidelobe level(WISL) metric. The approach is computationally efficient and can suit the more general Peakto-average power ratio(PAR) constraint. An extension to Multiple-input multiple-output(MIMO) radar case is also presented. | WU Hao SONG Zhiyong FAN Hongqi LI Yunxiang FU Qiang | 2015 | Chinese Journal of Electronics2015，24，3： | 1 |
| 11 | Changes in the relationship between species richness and belowground biomass among grassland types and along environmental gradients in Xinjiang, Northwest China显示文摘The association between biodiversity and belowground biomass(BGB) remains a central debate in ecology.In this study, we compared the variations in species richness(SR) and BGB as well as their interaction in the top(0–20 cm), middle(20–50 cm) and deep(50–100 cm) soil depths among 8 grassland types(lowland meadow, temperate desert, temperate desert steppe, temperate steppe desert, temperate steppe, temperate meadow steppe, mountain meadow and alpine steppe) and along environmental gradients(elevation, energy condition(annual mean temperature(AMT) and potential evapotranspiration(PET)), and mean annual precipitation(MAP)) based on a 2011–2013 survey of 379 sites in Xinjiang, Northwest China.The SR and BGB varied among the grassland types.The alpine steppe had a medium level of SR but the highest BGB in the top soil depth, whereas the lowland meadow had the lowest SR but the highest BGB in the middle and deep soil depths.The SR and BGB in the different soil depths were tightly associated with elevation, MAP and energy condition;however, the particular forms of trends in SR and BGB depended on environmental factors and soil depths.The relationship between SR and BGB was unimodal in the top soil depth, but SR was positively related with BGB in the middle soil depth.Although elevation, MAP, energy condition and SR had significant effects on BGB, the variations in BGB in the top soil depth were mostly determined by elevation, and those in the middle and deep soil depths were mainly affected by energy condition.These findings highlight the importance of environmental factors in the regulations of SR and BGB as well as their interaction in the grasslands in Xinjiang. | YANG Yuling LI Minfei MA Jingjing CHENG Junhui LIU Yunhua JIA Hongtao LI Ning WU Hongqi SUN Zongjiu FAN Yanmin SHENG Jiandong JIANG Ping'an | 2019 | Journal of Arid Land2019，11，6： | 0 |
| 12 | Observability analysis of feature aided terminal guidance systems显示文摘Feature aided design of estimators and guidance laws can significantly improve the interception performance of the terminal guidance system. The achieved enhancement can be effectively assessed by observability analysis methods. This paper first analyzes and discusses the existing assessment methods in a typical endgame scenario with target orientation observations. To get over their deficiencies, a novel singular value decomposition(SVD) method is proposed. Employing both theoretical analysis and numerical simulation, the proposed method can represent the degree of state observability which is enhanced by integrating target features more completely and quantitatively. | Shijie Fan Hongqi Fan Huaitie Xiao Jianpeng Fan Qiang Fu | 2015 | Journal of Systems Engineering and Electronics2015，26，1： | 0 |
| 13 | Distribution of Miss Distance for Pursuit-Evasion Problem显示文摘Miss distance is a critical parameter of assessing the performance for highly maneuvering targets interception(HMTI). In a realistic terminal guidance system, the control of pursuer depends on the estimate of unknown state, thus the miss distance becomes a random variable with a prior unknown distribution. Currently, such a distribution is mainly evaluated by the method of Monte Carlo simulation. In this paper, by integrating the estimation error model of zero-effort miss distance(ZEM) obtained by our previous work, an analytic method for solving the distribution of miss distance is proposed, in which the system is presumed to use a bang-bang control strategy. By comparing with the results of Monte Carlo simulations under four different types of disturbances(maneuvers), the correctness of the proposed method is validated. Results of this paper provide a powerful tool for the design, analysis and performance evaluation of guidance system. | Shengwen Xiang Hongqi Fan Qiang Fu | 2020 | IEEE/CAA Journal of Automatica Sinica2020，7，4： | 0 |
| 14 | Bernoulli particle flter with observer altitude for maritime radiation source tracking in the presence of measurement uncertainty显示文摘For maritime radiation source target tracking in particular electronic counter measures(ECM)environment,there exists two main problems which can deteriorate the tracking performance of traditional approaches.The frst problem is the poor observability of the radiation source.The second one is the measurement uncertainty which includes the uncertainty of the target appearing/disappearing and the detection uncertainty(false and missed detections).A novel approach is proposed in this paper for tracking maritime radiation source in the presence of measurement uncertainty.To solve the poor observability of maritime radiation source target,using the radiation source motion restriction,the observer altitude information is incorporated into the bearings-only tracking(BOT)method to obtain the unique target localization.Then the two uncertainties in the ECM environment are modeled by the random fnite set(RFS)theory and the Bernoulli fltering method with the observer altitude is adopted to solve the tracking problem of maritime radiation source in such context.Simulation experiments verify the validity of the proposed approach for tracking maritime radiation source,and also demonstrate the superiority of the method compared with the traditional integrated probabilistic data association(IPDA)method.The tracking performance under different conditions,particularly those involving different duration of radiation source opening and switching-off,indicates that the method to solve our problem is robust and effective. | Luo Xiaobo Fan Hongqi Song Zhiyong Fu Qiang | 2013 | Chinese Journal of Aeronautics2013，26，6： | 0 |
| 15 | ZRANB1 is an NBS1 deubiquitinase and a potential target to overcome radioresistance and PARP inhibitor resistance in triple-negative breast cancer显示文摘Poly(ADP-ribose)polymerase inhibitors(PARPi)are used to treat ovarian cancer and triple-negative breast cancer(TNBC)with defective homologous recombination repair pathways.However,de novo and acquired PARPi resistance limits clinical benefits.1 The MRE11-RAD50-NBS1(MRN)complex mediates the sensing,processing,and signaling of DNA double-strand breaks(DSBs)and plays important roles in the efficacy of PARPi and radiation treatment,2 and yet the mechanisms for the regulation and degradation of the MRN complex are not well understood.ZRANB1,also known as Trabid,is a breast cancer-promoting deubiquitinase that preferentially cleaves K29-,K33-,and K63-linked ubiquitin chains,3 but its role in therapy resistance remains unknown. | Ying Mei Qinglei Hang Hongqi Teng Fan Yao Mei-Kuang Chen Mien-Chie Hung Yutong Sun Li Ma | 2023 | Genes & Diseases2023，10，5： | 0 |
| 16 | Three-dimensional analysis of relationship between relative orientation and motion modes显示文摘Target motion modes have a close relationship with the relative orientation of missile-totarget in three-dimensional highly maneuvering target interception. From the perspective of relationship between the sensor coordinate system and the target body coordinate system, a basic model of sensor is stated and the definition of relative angular velocity between the two coordinate systems is introduced firstly. Then, the three-dimensional analytic expressions of relative angular velocity for different motion modes are derived and simplified by analyzing the influences of target centroid motion, rotation around centroid and relative motion. Finally, the relationships of the relative angular velocity directions and values with motion modes are discussed. Simulation results validate the rationality of the theoretical analysis. It is demonstrated that there are significant differences of the relative orientation in different motion modes which include luxuriant information about motion modes. The conclusions are significant for the research of motion mode identification,maneuver detection, maneuvering target tracking and interception using target signatures. | Fan Shijie Fan Hongqi Xiao Huaitie Fan Jianpeng Fu Qiang | 2014 | Chinese Journal of Aeronautics2014，27，6： | 0 |
| 17 | Simultaneous ISAR imaging of group targets flying in formation显示文摘This paper proposes a novel inverse synthetic aperture radar(ISAR) imaging method based on second-order keystone transform(KT) and Sandglass transform for group targets flying in a formation with constant accelerated rectilinear motion in the same radar beam. First, range curvature and range walk of each sub-target among group targets are corrected by the second-order KT combined with the quadratic phase term compensation. After range alignment, the signals in each range frequency cell can be modelled as multiple chirp signals and then the Sandglass transform is utilized to cross-range imaging, which transforms the time–frequency distribution of the signals in each range frequency cell into beelines parallel to the slow time axis simultaneously. Finally, cross-range profiles of group targets in each range frequency cell are obtained via a projection of the perk of every scatterer in the two-dimensional accumulation plane onto the frequency axis. The advantage of the proposed method is that it can align range profiles of each sub-target simultaneously and image cross-range profiles directly without separating the returned signals, which simplifies the operation procedure. Simulation results are used to demonstrate the effectiveness of the proposed method. | Chen Jie Xiao Huaitie Song Zhiyong Fan Hongqi | 2014 | Chinese Journal of Aeronautics2014，27，6： | 0 |
| 18 | Multi-aperture optical imaging systems and their mathematical light field acquisition models显示文摘Inspired by the compound eyes of insects,many multi-aperture optical imaging systems have been proposed to improve the imaging quality,e.g.,to yield a high-resolution image or an image with a large field-ofview.Previous research has reviewed existing multi-aperture optical imaging systems,but few papers emphasize the light field acquisition model which is essential to bridge the gap between configuration design and application.In this paper,we review typical multi-aperture optical imaging systems(i.e.,artificial compound eye,light field camera,and camera array),and then summarize general mathematical light field acquisition models for different configurations.These mathematical models provide methods for calculating the key indexes of a specific multiaperture optical imaging system,such as the field-of-view and sub-image overlap ratio.The mathematical tools simplify the quantitative design and evaluation of imaging systems for researchers. | Qiming QI Ruigang FU Zhengzheng SHAO Ping WANG Hongqi FAN | 2022 | Frontiers of Information Technology & Electronic Engineering2022，23，6： | 0 |
| 19 | Maximal admissible mode decision delay in terminal guidance显示文摘Mode decision-maker is a critical component in the logic-based Integrated Estimation and Guidance(IEG) system. For the best possible estimation and guidance performance, the mode decision delay of the mode decision-maker should be limited to a range as small as possible. This paper presents a numerical method for computing the maximal admissible mode decision delay that varies with time-to-go. Particular attention has been paid to highly maneuvering target interception in terminal guidance. The results of this research offer useful guidelines for the design of the mode decision-maker in IEG systems. | Shengwen XIANG Tiancheng LI Wei CHEN Hongqi FAN Qiang FU | 2019 | Chinese Journal of Aeronautics2019，32，8： | 0 |
| 20 | Angioarchitecture and prognosis of pediatric intracranial pial arteriovenous fistula显示文摘Objective Pial arteriovenous fistulas(PAVFs)are rare and mostly observed in children.However,the overall angioarchitecture,clinical features,treatments and long-term prognosis for pediatric patients remain unclear.Methods Clinical data of consecutive 42 pediatric PAVFs were documented and analysed.According to the differences of age distribution and clinical features,they were split into a younger group(≤3 years old;20 cases)and an older group(3-14 years old;22 cases).Results Their mean age was 4.9±3.9 years,and the mean preoperative modified Rankin Scale(mRS)score was 1.64±1.57.Fourteen patients(33.3%)were asymptomatic,followed by epilepsy(21.4%),intracranial haemorrhage(16.7%),hydrocephalus(9.5%),developmental delay(7.1%),intermittent headache(7.1%)and congestive heart failure(4.8%).Annual bleeding rate and rebleeding rate before treatment reached 3.86%and 3.17%.Poor venous drainage including sinus dynamic obstruction(21 cases,50.0%)and sinus occlusion(17 cases,40.48%)were found with high frequency among these patients.Finally,33 cases were cured(78.57%),and 4 cases faced surgery-related complications(9.52%).During 24-140 months’follow-up,the mean mRS score reduced to 0.57±0.40.However,only 22 cases(52.38%)recovered to absolutely normal,and poor venous drainage was the risk factor for patients’incomplete recovery(p=0.028,Exp(B)=14.692,95%CI 1.346 to 160.392).Compared with the older group,younger group showed more chronic symptoms,more secondary pathological changes,more times treatment and worse prognosis(p=0.013,0.002,0.000 and 0.032,respectively).Conclusions Pediatric PAVF has different angioarchitectures,clinical features and prognoses in different age groups.Poor venous drainage is an important factor leading to poor prognosis,and it accounts for incomplete recovery in nearly half of patients. | Jingwei Li Zhenlong Ji Jiaxing Yu Jian Ren Fan Yang Lisong Bian Xinglong Zhi Guilin Li Hongqi Zhang | 2023 | Stroke & Vascular Neurology2023，8，4： | 0 |
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