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| 1 | Novel research on main-lobe jamming polarization suppression technology显示文摘A novel main-lobe blanketing interference suppression method which named as spatial virtual multiple channel concurrent polarization filter technology is proposed.It processes sample data using the slow varied polarization property of a scanning antenna.The orthogonal polarized signal and polarization states of the receiving signal can be obtained.The optimal polarization is then calculated for use in polarization filtering to achieve the objective of suppressing noise jamming.The effect of elevation measurement error on interference suppression performance is eliminated by concurrent processing.Theoretical and simulation results show that,this technology enabled self-polarization information processing for single polarized radar which improved its working performance. | DAI HuanYao WANG XueSong LIU Yong LI YongZhen XIAO ShunPing | 2012 | Science China(Information Sciences)2012，55，2： | 16 |
| 2 | Mitigation of cross-eye jamming using a dual-polarization array显示文摘This paper presents an approach for mitigating the cross-eye jamming using a dual-polarization array. By transmitting a sum beam and a difference beam in two orthogonal polarimetric channels, a synthesized transmitted beam with spatially varying polarization is produced, such that the polarization of the transmitted radar wave varies in azimuth or elevation. Thus, the phases of the signals received on the two antennas of a cross-eye jammer become unequal, and an additional phase difference is introduced to disrupt the 180? phase shifting in the retrodirective loop of the jammer. By means of beam scanning in a small angular range,the optimal beam steering configuration can be found to maximize the phase error for the mitigation of cross-eye jamming. As a result, the jamming performance of the cross-eye jammer degrades largely. Theoretical analysis and simulation results indicate that the proposed method is valid and feasible. | MA Jiazhi SHI Longfei XIAO Shunping WANG Xuesong | 2018 | Journal of Systems Engineering and Electronics2018，29，3： | 9 |
| 3 | Spatial polarization characteristics and scattering matrix measurement of orthogonal polarization binary array radar显示文摘Polarimetry is an important trend in the development of modern radar.The technique for measuring polarization scattering property of the target is the key for polarization radar realization,but it faces challenges in engineering.Here,a new theoretical model for target scattering characteristic measurement radar,named orthogonal polarization binary array radar(OPBAR),is proposed.The spatial polarization characteristics of the radar antennas are addressed.A new polarimetric algorithm that needs only one channel is designed.The polarization scattering matrix measurement can be implemented by processing received signal in a short time interval while antenna's beam mechanically scans the target.Through compactness field microwave dark room experiment,measurments of dynamic broadband polarimetry on OPBAR have been conducted and the validity of research work has been demonstrated.The result is helpful to exploiting the capability of current radar systems and enhancing their information acquiring and processing capacity. | DAI HuanYao ,WANG XueSong,LI YongZhen,LUO Jia & XIAO ShunPing College of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China | 2010 | Science China(Information Sciences)2010，53，12： | 8 |
| 4 | The signal selection and processing method for polarization measurement radar显示文摘Based on the ambiguity function, a novel signal processing method for the polarization measurement radar is developed. One advantage of this method is that the two orthogonal polarized signals do not have to be perpendicular to each other, which is required by traditional methods. The error due to the correlation of the two transmitting signals in the traditional method, can be reduced by this new approach. A concept called ambiguity function matrix (AFM) is introduced based on this method. AFM is a promising tool for the signal selection and design in the polarization scattering matrix measurement. The waveforms of the polarimetric radar are categorized and analyzed based on AFM in this paper. The signal processing flow of this method is explained. And the polarization scattering matrix measurement performance is testified by simulation. Furthermore, this signal processing method can be used in the inter-pulse interval measurement technique as well as in the instantaneous measurement technique. | CHANG YuLiang WANG XueSong LI YongZhen XIAO ShunPing | 2009 | Science in China(Series F)2009，52，10： | 8 |
| 5 | Bistatic scattering centres of cone-shaped targets and target length estimation显示文摘The bistatic scattering centres are commonly modeled as the fixed scattering centres for imaging;however,the location of the bistatic scattering centre changes with the bistatic geometry in some real scenes.This paper focuses on the bistatic scattering centres of cone-shaped targets and considers how to utilize the length of the bistatic high-resolution range profile(HRRP) for target identification.Firstly,the locations of the bistatic scattering centres on the edge of a cone-shaped target are deduced with the method of equivalent currents,which are the intersection points of the edge and the plane constructed by the symmetry axis and the bisector of the bistatic angle.Then,based on the above conclusion,the wideband echo model and bistatic HRRP of a cone-shaped target is deduced.Then,the relation between the length of the bistatic HRRP and target length is deduced,which is useful for target identification.Finally,the bistatic HRRPs of cone-shaped targets are calculated via the Feko software and the calculated results validate the theoretical analysis.This research provides an exact mathematics model for the echo simulation,imaging,feature extraction and identification of cone-shaped targets in the bistatic radar. | AI XiaoFeng ZOU XiaoHai LI YongZhen YANG JianHua XIAO ShunPing | 2012 | Science China(Information Sciences)2012，55，12： | 8 |
| 6 | Polarization discrimination between repeater false-target and radar target显示文摘High fidelity repeater false-target badly affects a radar system's detecting, tracking, and data processing. It is an available approach of confronting false-target for radar that discriminates firstly and then eliminates. Whereas for the technique progress about the repeater false-target jam, it is more and more difficult to discriminate this jam in the time-domain, frequency-domain, or space-domain. The technique using polarization information to discriminate the target and false-target is discussed in this paper. With the difference that false-target signal vector's polarization ratio is fixed and target echo signal vector's polarization ratio is variational along with radar transmission signal's polarization, we transform the discrimination problem to beeline distinguish problem in the 2-dim complex space. The distributing characteristic expression of the false-target discrimination statistic is constructed, with which the discrimination ratio of false-target is analyzed. For the target case, the decomposed model of target scattering matrix and the concept of distinguish quantity are proposed. Then, the discrimination ratio of target can be forecasted according to target distinguish quantity. Thus, the performance of discrimination method has been analyzed integrally. The simulation results demonstrate the method in this paper is effective on the discrimination of target and false-target. | SHI LongFei WANG XueSong XIAO ShunPing | 2009 | Science in China(Series F)2009，52，1： | 6 |
| 7 | Statistical assessment of H/A target decomposition theorems in radar polarimetry显示文摘Target decomposition (TD) theorems have been widely applied in radar polarimetry, serving as the bridge between radar measurements and the physical parameters of a scatterer. The H/A target decomposition is one of the most suitable tools for performing data interpretation in the study and characterization of natural scatters. In this paper, the statistics of the parameters of eigenvalue, eigenvector and H/A have been analyzed via a novel method, and the probability density functions (PDF) have been obtained. It is pointed out that all these parameters can be seen as asymptotically nonbiased with respect to the number of looks. In order to reduce the biases for a small number of looks, a novel estimator for the parameters has been proposed. We give the basic theorems for accurate estimation of parameters. | LIU Tao HUANG GaoMing WANG XueSong XIAO ShunPing | 2010 | Science China(Information Sciences)2010，53，2： | 5 |
| 8 | Nonlinear Kalman Filtering with Numerical Integration显示文摘 | RAO Bin XIAO Shunping WANG Xuesong LI Yongzhen | 2011 | Chinese Journal of Electronics2011，20，3： | 3 |
| 9 | Performance gain bounds of coherently combining multiple radars in a target-based calibration manner显示文摘To achieve a high signal-to-noise ratio(SNR) while maintaining moderate radar antenna, a target-based calibration manner is available to coherently combine multiple radars. The key to this calibration manner is to estimate coherence parameters(CPs), i.e., time and phase calibration values in transmission and reception estimation, by separating the target returns into monostatic and bistatic echoes. However, CPs estimations exist uncertainties, which will affect the performance gain after multiradar coherent combination. The principle of coherently combining multiple radars is elaborated and the signal probability model for CPs estimation is established. On this basis, CPs Cramer-Rao bound(CRB) is derived in the closed-form, according to which the non-tight and tight upper bounds for multiple radars coherent combination performance gain are derived in the closed-form and via Monte Carlo(MC) simulations, respectively. Simulations validate the correctness of the derived CRB and gain bounds. | LIU Xinghua XU Zhenhai XIAO Shunping | 2019 | Journal of Systems Engineering and Electronics2019，30，2： | 3 |
| 10 | Statistical characteristics of the normalized Stokes parameters显示文摘The statistical properties of the normalized Stokes parameters in a Gaussian sto-chastic plane wave field are described in detail. Via the expression of the three normalized Stokes parameters,the mean,variance,and high-order moments are calculated,which simplify C. Brosseau's results. The new dispersion,normalized contrast function,skewness,and kurtosis are defined to describe the non-Gaus-sian distribution characteristics,which can be applied to Gaussian wave fields re-lating to depolarization of light by a spatially random medium. | LIU Tao WANG XueSong XIAO ShunPing | 2008 | Science in China(Series F)2008，51，10： | 2 |
| 11 | Radar Tar-get Recognition Baser! on Polarization Features显示文摘 | Xiao Shunping Guo Oruirong Zhuang Zhaowen | 1994 | Naecon1994，，5： | 1 |
| 12 | Discrimi- nation of exo-atmospheric active decoys using acceler- ation information显示文摘 | Rao Bin Zhao Yanli Xiao Shunping | 2010 | IET Radar Sonar Navig2010，4，4： | 1 |
| 13 | Maxi- mum likelihood approach to the estimation and dis- crimination of exoatmospheric active phantom tracks using motion features显示文摘 | Rao Bin Xiao Shunping Wang Xuesong | 2012 | IEEE Trans Aerosp Elec- tron Syst2012，48，1： | 1 |
| 14 | Joint track- ing and discrimination of exoatmospheric active de- coys using nine-dimensional parameter-augmented EKF显示文摘 | Rao Bin Xiao Shunping Wang Xuesong | 2011 | Signal Process2011，91，10： | 1 |
| 15 | Rotational parameters estimation of maneuvering target in ISAR imaging显示文摘The rotational parameters estimation of maneuvering target is the key of cross-range scaling of ISAR (inverse synthetic aperture radar), which can be used in the target feature extraction. The cross-range signal model of rotating target with fixed acceleration is presented and the weighted linear least squares estimation of rotational parameters with fixed velocity or acceleration is proposed via the relationship of cross-range FM (frequency modulation) parameter, scatterers coordinates and rotational parameters. The FM parameter is calculated via RWT (Radon-Wigner transform). The ISAR imaging and cross-range scaling based on scaled RWT imaging method are implemented after obtaining rotational parameters. The rotational parameters estimation and cross-range scaling are validated by the ISAR processing of experimental radar data, and the method presents good application foreground to the ISAR imaging and scaling of maneuvering target. | Wenchen Li Jin Liu Xuesong Wang Shunping Xiao Guoyu Wang | 2010 | Journal of Systems Engineering and Electronics2010，21，1： | 1 |
| 16 | Separation and preconcentration of persistent organic pollutants by cloud point extraction显示文摘 | Shunping Xie Man Chin Paau Cheuk Fai Li Dan Xiao Martin M.F. Choi | 2009 | Journal of Chromatography A2009，，16： | 1 |
| 17 | Maximum Likelihood Approach to the Estimation and Discrimination of Exoatmospheric Active Phantom Tracks Using Motion Features 显示文摘 | Rao Bin Xiao Shunping Wang Xuesong | 2012 | IEEE Transactions on Aerospace and Electronic Systems2012，48，1： | 1 |
| 18 | Mathematical principle and characteristics of polarization transform显示文摘The precise definition of polarization transform is proposed from the viewpoint of polarization domain transform for the first time. The mathematical principle,char-acteristics and physical meanings of polarization transform are analyzed. Two typical kinds of polarization transforms which are called unitary matrix polarization transform (UMPT) and diagonal matrix polarization transform (DMPT) are put for-ward. The gain property and the change property of polarization state distance are presented in detail. Thereby,the concept of serial polarization transform is pro-posed. A general polarization transform can be realized by two steps: changing the location of polarization states in polarization domain by UMPT; and expanding or compressing the density of polarization states by DMPT. The result is meaningful to many applications including polarization filtering,detection,enhancement,anti-jamming,discrimination and so on. | DAI DaHai WANG XueSong XIAO ShunPing LI YongZhen | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，9： | 1 |
| 19 | Nonlinear Optimization Method of Radar Target Polarization Enhancement 显示文摘 | Wang Xuesong Xiao Shunping Tao Huamin | 2000 | Progress In Natural Science2000，10，1： | 1 |
| 20 | Fast growth synthesis of silver dendrite crystals assisted by sulfate ion and its application for surfaee-enhaneed raman seattering 显示文摘 | XIE Shunping ZHANG Xicui XIAO Dan | 2011 | J Phys Chem C2011，115，： | 1 |
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