Issue 3,2001 Table of Contents

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  • 1  A Method of Registration Errors in Radars Netting System
    LU Xiang-jun
    2001(3):1-6.
    [Abstract](2295) [HTML](0) [PDF 0.00 Byte](1)
    Abstract:
    A system error model of radar networks is established in this paper. System errors have been found by nonlinear programming. The effect of optimized programming is tested by simulation and true radar's data.
    2  A Radar Simulator Being Capable of Interface Cross-linking for Airborne Fire Control System
    YANG Run-ting
    2001(3):7-9.
    [Abstract](2456) [HTML](0) [PDF 0.00 Byte](1)
    Abstract:
    The radar simulator system which simulate airborne radar is described. This system supplies in- terface cross-linking of airborne radar with avionic integration system.
    3  The Radar Performance Requirement in Relation to Inertial Navigation System Correction with Airborne Radar
    HUANG Guo-rong ZHANG Zong-lin YANG Ya-li
    2001(3):10-12.
    [Abstract](2333) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    With regard to the scheme of inertial navigation system correction with airborne radar, this paper studies the radar performance requirement in order to meet the correction precision. The mathematical relation be- tween measure precision of radar parameters and the correction precision is derived. The result can provide theoreti- cal reference to the scheme and performance of radar when researching.
    4  Speckle Reduction for Spaceborne SAR Images Based on Generalized Morphological Filter
    LIU Xian-feng ZHENG Ming-jie LONG Teng HAN Yue-qiu
    2001(3):13-16.
    [Abstract](2263) [HTML](0) [PDF 0.00 Byte](4)
    Abstract:
    Method is developed for speckle reduction of high resolution one-look spaceborne SAR images in this paper. This method, based on generalized morphological filter, makes high spatial resolution and high radio- metric resolution one-look SAR images by means of smoothing speckle with generalized morphological filter. This method is discussed in detail, and its efficiency is demonstrated with the spaceborne SAR images data.
    5  Smart BIT Technology and Application in Radar System
    CAO Hong-bing CAI Jin-yan HUANG Yun-hua
    2001(3):17-19.
    [Abstract](2348) [HTML](0) [PDF 0.00 Byte](4)
    Abstract:
    This paper introduces the BIT working modes and kinds of smart BIT, focus on the technology implemented by artificial neural networks (ANN) and case-based reasoning (CBR),analyzes the characteristics of the ANN used in BIT. The Self-lmproving Predicting Expert System model basd on CBR is presented in the paper.
    6  Improving Range Resolution for HF Radar by Means of the Parameter Estimation
    WANG Yong-cheng
    2001(3):20-23.
    [Abstract](2279) [HTML](0) [PDF 0.00 Byte](1)
    Abstract:
    An algorithm of improving range resolution for HF radar signal processing is given in this paper. Using parameter model to describe the radar signals reflective from targets and then the model parameters are esti-mated by means of ML method. The simulation results are also given at last.
    7  Study on Radar Jamming Effects Evaluation Using the Neural Network
    WEI Bao-hua YANG Suo- chang WANG Xue- song GAO Qin ZHOU Ying
    2001(3):24-27.
    [Abstract](2358) [HTML](0) [PDF 0.00 Byte](3)
    Abstract:
    In this paper, the method of neural network is used for jamming effects evaluation. Through training, the mapping relations between jamming effects and factors are fitted. Then, the model of evaluation is structured, through which jamming effects can be estimated. Experiments show that this method is easy, operable, and has high accuracy ratio.
    8  Multiple-target Simulation Software of Fire Finding Phased Array Radar
    YOU Feng-ping
    2001(3):28-33.
    [Abstract](2372) [HTML](0) [PDF 0.00 Byte](4)
    Abstract:
    Multiple target simulation techniques is one of most important things of phased array radar system control software design. This report present how proposes the multiple target corresponding mathematical models and software simulation method and structure of software. At last, software module is introduced.
    9  Applications of Database in ECM & ECCM Simulation Systems
    2001(3):34-37.
    [Abstract](2433) [HTML](0) [PDF 0.00 Byte](4)
    Abstract:
    以雷达模拟器系统与目标、干扰和环境模拟器为例,简要地介绍了利用ORACLE数据库在仿真系统中如何建立和应用各种系统数据库和专用数据库.
    10  The Design and Implementation of Radar IF Signal Sampling and Quadrature Coherent Detection
    CHA Hao LIU Dong-li
    2001(3):38-41.
    [Abstract](2381) [HTML](0) [PDF 0.00 Byte](3)
    Abstract:
    According to the principle of IF signal sampling and quadrature coherent detection, the scheme sampling the 30 MHz radar IF signal (Bandwidth= 2MHz) directly is presented. The results of computer simulation and hardware implementation are also provided. It is indicated by testing results that the performance of direct IF processing is superior to the simulative coherent detection.
    11  Estimating the Velocity of Radar Clutter
    CHEN Tu-qiang ZHANG Gong
    2001(3):42-44.
    [Abstract](2381) [HTML](0) [PDF 0.00 Byte](2)
    Abstract:
    Estimating the velocity of clutter plays a key role in adaptive moving-target indication (AMTI) radar. The methods to solute application problems about estimating velocity of moving clutter in radar engineering are presented in this paper. The hardware and software structures of a clutter velocity estimator based on TMS320F206 are introduced.
    12  Technology of Information Display on Radar or Command System
    NI Guo-qi ZOU Xiang- yang LI Ru- nian
    2001(3):45-51.
    [Abstract](2350) [HTML](0) [PDF 0.00 Byte](2)
    Abstract:
    The situation of radar and the information of command site plays an important role in information source of commanded and commander's right commanding. If there weren't, it would be impossible that will win on modern condition. The technology of information display is actively studied in each country, in order that they can provide the information display instrument of more overall and more accurate and more visualized and more con- venient for the commander. Now, the old display technology is unceasingly improving and the new display technolo- gy is unceasingly springing up. This paper describes the six advanced display technology and applied dynamics.
    13  The Active Phased Array Antenna Calibration Based on Traveling Wave Array Feed
    GE Jian-jun DU Kui ZHOU Yong-qing CHEN Xin-ping
    2001(3):52-55.
    [Abstract](2327) [HTML](0) [PDF 0.00 Byte](1)
    Abstract:
    This paper looks into the active phased array antenna alignment adopt the BITE traveling wave array feed. The calibration can be cataloged into two style: one by one and the inverse of matrix. We also analysis the main feature and measure accuracy of each method. The result here can be used as the reference for active array antenna calibration design.
    14  A Numerical Algorithm for Solving Radome Aiming Error by Plane Wave Spectrum
    RONG Hua GUO Dong-ming WANG Xiao-ming JIA Zhen-yuan XUAN Zhao-cheng
    2001(3):56-59.
    [Abstract](2284) [HTML](0) [PDF 0.00 Byte](2)
    Abstract:
    The radome is a device for protecting the antenna from the affect of the environment. In order to obtain the maximum of power transmit rate and the minimum of phase distortion of the electromagnetic wave through the radome, the influence of radome on the electrornagnetic performance of antenna is analyzed by means of the plane wave spectrum method. Meanwhile. the directional pattern of the far field of antenna - radome system is calculated using numerical surface integration algorithm, and the aiming error is further obtained by numerical opti- mization techniques. This paper also investigates the influence of the number of integration interval of the numerical quadrature on the computational effort, and a proper number of integration intervals is obtained. Finally, some nu- merical examples are given. and the feasibility and efficiency of the proposed algorithm are verified.
    15  Analysis of Effects of Large Airborne Radome on Linear Array
    ZHANG Qiang
    2001(3):60-64.
    [Abstract](2312) [HTML](0) [PDF 0.00 Byte](4)
    Abstract:
    In this paper, the hybrid method of aperture-integration and surface-integration technique with three dimension ray tracking technique is presented. By this method,the effects of a large airborne radome on SSR linear radiate array and element are analyzed. The solution to the vector superposition of direct lobe and reflection lobe in the antenna pattern with radome is given. The calculated result and the experiment one are good agreement.
    16  Application of Object Feedforward in Precision Tracking Radar
    ZHANG Bo-lin HUANG Jian-guo
    2001(3):65-68.
    [Abstract](2323) [HTML](0) [PDF 0.00 Byte](1)
    Abstract:
    The Object feedforward is a good method to increase the system precision and reduce the dynamic lag. This paper describes the application of object feedforward in a large precision tracking radar.
    17  The Rigidity Analysis and Calculation of Pedestal in Airborne Radar
    GU Ji-feng
    2001(3):69-70.
    [Abstract](2281) [HTML](0) [PDF 0.00 Byte](1)
    Abstract:
    Antenna driving mechanism is the driving unit of radar system. Its inherent fretluency will affect servo band width of the whole antenna driving mechanism. In the past, the effect of movement pair on the stiffness of pedestal hasn't been taken into consideration when we analyzed and calculated the inherent frequency of pedestal. In this paper, by analyzing the stiffness of pedestal of a airborne radar, we can see the effect of bearing stiffness on the inherent frequency of pedestal.
    18  Development and Application of Ferrite Dual Mode Device
    WEI Ke-zhu LI Shi-gen
    2001(3):71-74.
    [Abstract](2360) [HTML](0) [PDF 0.00 Byte](1)
    Abstract:
    This paper discribed some new dual-mode devices such as rotary-field variable polarizer,rotary- field diplex phase shifter and variable polarized phase shifter,and introduced their new applications in radar and com- munication.
    19  Development of a Harmonic Mixer at Ku-Band
    WANG Jun CAO Gui-xing YU Hong-xi
    2001(3):75-76.
    [Abstract](2473) [HTML](0) [PDF 0.00 Byte](15)
    Abstract:
    This paper describes the principle, design, simulation and experiment results of a harmonic mixer used for Ku-band microwave receiver. The mixer consists of a Lange coupler, an input filter, an output filter and matching networks etc. From the experiment results, it can be seen that the experiment curve of the conversion loss accords with the simulation curve basically in the 14. 00-14. 25GHz frequency region, the in-band flatness is less than 1 dB and the VSWR less than 2.
    20  Localized Improvement and Design of the French LP23K Radar Receiver
    LIU Wei-sheng WU Ming-ya ZENG Fan -wen
    2001(3):77-79.
    [Abstract](2445) [HTML](0) [PDF 0.00 Byte](3)
    Abstract:
    This paper introduces improvement and design of the five key modules of the French LP23K radar receiver. After reconstruction,the new receiver excels the old one in the performance indexes,such as noise factor, systern gain,dynamic range,source power and so on. By application,it is proved that the new receiver can replace the old completely.
    21  Analysis and Design of Radar Radome Assembly Technology
    WANG Ping ZHOU Jin
    2001(3):80-83.
    [Abstract](2378) [HTML](0) [PDF 0.00 Byte](2)
    Abstract:
    In this paper,the key technology of assembling certain large radar radome is mainly analyzed and discussed. The thinking of assembling technology of the radome is introduced. The installation processes of the radome are briefly introduced in this paper.
    22  Design is the Key Factor of Improving Radar Quality
    LIU Xiang-dong
    2001(3):84-86.
    [Abstract](2350) [HTML](0) [PDF 0.00 Byte](2)
    Abstract:
    The Quality control experience of radar development is summarized in this paper, and described the design controlling is the key factor of impronving quality, major content for designing control is introduced.

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