ID 原文 译文
50977 将不确定性视为复合扰动，采用反馈线性化实现标称系统的解耦， Will uncertainty as the compound disturbance, the nominal system is realized by using feedback linearization decoupling,
50978 并分别为俯仰与滚转子系统设计了非线性干扰观测器与反演自适应控制器。 designed for pitching and rolling rotor system and nonlinear disturbance observer and inversion adaptive controller.
50979 仿真结果表明，复合控制器在多种不确定性条件下能达到一致的控制效果， The simulation results show that the compound controller under the condition of many kinds of uncertainty can achieve consistent control effect,
50980 控制性能优于常规增稳控制系统。 the control performance is superior to the conventional stability augmentation control system.
50981 提出一种单载波二维码分与频分多址(single carrier two dimensional code and frequency division multiple access，SC-2DCFDMA)系统，借助时频二维扩频矩阵解决普通单载波码分与频分多址(single carrier code and frequency division multiple access，SC-CFDMA)系统中扩频因子与子带宽度之间的矛盾; A qr code points with single carrier frequency division multiple access (single carrier two dimensional code and frequency division multiple access, SC - 2 dcfdma) system, using the time-frequency solve common two-dimensional spread spectrum matrix code points and single carrier frequency division multiple access (single carrier code and frequency division multiple access, SC - CFDMA) spreading factor in the system and the contradiction between the subband width;
50982 构建了SC-2DCFDMA系统发送端与接收端的数学模型; Build the SC - 2 dcfdma system mathematical model of sending end and receiving end;
50983 分析了其在加性高斯白噪声信道和频率选择性信道下的理论误码率。 Analyzed in additive white gaussian noise channel and frequency selective channel under the theory of error rate.
50984 仿真结果表明，理论与仿真误码率曲线吻合; The simulation results show that the theory and simulation error rate curve;
50985 在相同的扩频因子条件下，SC-2DCFDMA系统具有比SC-CFDMA系统更窄的用户子带宽度和更优的误码率性能; Under the condition of the same spreading factor, SC - 2 dcfdma system has a narrower than SC - CFDMA system user belt width and better ber performance;
50986 在多用户场景下，虽然信道的频率选择性会造成频域扩频码的正交性损失，但这种损失可由时域扩频码的正交性来弥补，从而使得SC-2DCFDMA系统的多用户性能优于SC-CFDMA系统。 In a multi-user scenario, although the frequency selective channel would cause loss of orthogonality of frequency domain spread spectrum code but the losses can be made of the time domain to compensate the orthogonality of the spread spectrum code, so as to make the SC - 2 dcfdma multi-user performance of the system is better than that of SC - CFDMA system.