ID 原文 译文
55747 协作多点(coordinated multi-point,CoMP)传输的非对称定时同步特性会对其时分双工(time division duplex,TDD)模式带来新的信道互易性误差。 Collaboration (more coordinated multi - point, CoMP, asymmetric timing synchronization characteristics of the transmission on the time-division duplex (time division duplex, TDD) bring new channel reciprocity model error.
55748 研究了由非对称同步时偏造成的等效信道互易性误差,建立了定时同步互易性误差(timing synchronization reciprocity error,TSRE)的数学模型。 Studied caused by asymmetric synchronous when partial equivalent channel reciprocity error, established the timing synchronization error of reciprocity (timing synchronization reciprocity error, TSRE) mathematical model.
55749 基于该模型的概率分布,通过矩阵分解和子空间投影,推导出CoMP系统下行传输中用户速率损失上界。 Based on the probability distribution of the model, through the matrix decomposition and the subspace projection, deduce the CoMP system in downlink transmission loss rate of upper bound.
55750 同时通过此上界表达式,分析了在不同CoMP系统参数设定条件下,此类互易性误差对下行预编码造成的性能损失。 At the same time, through this upper bound expressions, this paper analyzes the under the condition of different CoMP system parameter setting, such reciprocity error for downlink performance loss caused by precoding.
55751 仿真结果对理论分析进行了验证。 The simulation results of theoretical analysis is verified.
55752 针对调制型捷联惯导系统(modulated strapdown inertial navigation system,MSINS),提出了惯性组件(inertial navigation unit,IMU)的在线标定路径设计原则。 In modulating the strapdown inertial navigation system (modulated strapdown inertial navigation system, MSINS), puts forward the inertial components (inertial navigation unit, IMU) online calibration path design principles.
55753 首先根据IMU输出误差模型建立了系统误差模型,而后利用该模型,分析了载体无加速运动且转台静止情况下的可观测性,分析结果表明该状态下有一半状态量不可观测;针对该现象,对系统模型进行了能观测性分解,通过分解结果观察无法估计的状态量,并且得到了分解后系统的可观测性矩阵,在此基础上,推导了满足该矩阵满秩的IMU运动原则,由此归纳出IMU在线标定路径设计原则;最后,利用仿真试验验证了该方法的正确性,半实物仿真试验验证了该方法的工程适用性。 First based on output of IMU error model system error model is established, and then by using the model, analyzed the carrier without accelerated motion and observability of the turntable static situation, the analysis results show that the state of half the quantity of state not observation;Aiming at the phenomenon, can observations were made on the system model decomposition, by decomposing the results observed unable to estimate the state variable, and got the system observability matrix after decomposition, on this basis, the company to meet the full rank matrix was deduced movement principle, which induces the innovative marketing online calibration path design principles;Finally, the correctness of this method was validated by simulation experiment, semi-physical simulation experiment verifies the engineering applicability of the method.
55754 对舰载电子战飞机的雷达散射截面(radar cross section,RCS)特性进行研究。 For shipboard radar scattering cross section of ew aircraft (radar cross section, the RCS) properties were studied.
55755 分析作战剖面下雷达波对于机体的俯仰角,建立舰载电子战飞机A型号和B型号的三维CATIA模型,基于物理光学法和等效电磁流法,使用RCSPlus软件,数值模拟在UHF、X和S雷达波段下舰载电子战飞机的RCS特性,研究电子战条件下飞机被雷达发现概率,并对仿真结果进行数理统计分析。 Under the analysis of operational profile radar wave for the pitching Angle of the body, build the shipboard electronic warfare aircraft A type and B type of 3 d CATIA model, based on the physical optics method and the equivalent electromagnetic flow method, using RCSPlus software, numerical simulation under the UHF, X and S band radar RCS characteristics of carrier-borne electronic warfare aircraft, the aircraft by radar ew conditions found probability, and the simulation results of the mathematical statistical analysis.
55756 研究结果表明:对低空隐身飞机设计时,要降低俯仰角在-7. 30°至14. 78°之间飞机的RCS值,就可以降低距离26km以外、高度8km以下的所有雷达的探测距离;舰载电子战飞机RCS特性A型号与B型号相比,在X波段下,头向RCS减小了40.95%;舰载电子战飞机A型号在与无电子战时相比,被X波段雷达探测到距离缩短了63.24%。 Research results show that the low level design of stealth aircraft, to reduce pitching Angle between 7. 30 ° and 14. 78 ° in the aircraft's RCS value, can be reduced from 26 km outside all, height 8 km below the radar detection range;Carrier-borne electronic warfare aircraft RCS characteristics, compared to A type and B type under the x-band, head to the RCS reduced 40. 95%;Carrier-borne electronic warfare aircraft A model are compared with no electronic war, by x-band radar to detect distance shortened by 63. 24%.