ID 原文 译文
8504 最后对多项式同余跳频序列集的二维周期汉明相关值进行了分析。 Finally, the polynomial congruence of frequency hopping sequence set two-dimensional periodic hamming correlation value are analyzed.
8505 在高分辨情况下,星载合成孔径雷达(synthetic aperture radar,SAR)的合成孔径时间变长,加速度带来的影响则不可忽略,匀速直线模型下的传统算法将失效。 Under the condition of high resolution spaceborne synthetic aperture radar (synthetic aperture radar, SAR) synthetic aperture time is long, and the effects of acceleration is not negligible, uniform motion in a straight line under the model of traditional algorithms will fail.
8506 利用加速度斜距模型,分析了曲线轨迹模型下聚束式SAR的空变特性,提出了一种适用于大场景高分辨成像的方位维频率非线性变标算法。 Using acceleration slant distance model, the paper analyzes the curve track model bunching space-variant characteristics of SAR, this paper proposes a suitable for large scenes of high resolution imaging of azimuth dimension nonlinear variable scale algorithm.
8507 首先,通过构造一个方位维多相滤波函数,增加方位维变标的自由度,使得构造的扰动函数可以消除空变的距离方位二维频域耦合项; First of all, by constructing a bearing polyphase filter function, increase the bearing degree of freedom is target, makes the structure of perturbation function can eliminate two-dimensional space-variant distance azimuth frequency domain coupling term;
8508 然后,改进了常规的两步去混叠算法,使之更加适用于曲线轨迹模型; Then, improved the conventional two-step to aliasing algorithm, make it more applicable to the curve track model;
8509 最后,利用梯度运算将方位调制项的空变系数进行分解,通过扰动函数消除空变的方位项。 Finally, using the gradient computation will azimuth modulation of empty variable coefficient decomposition, eliminated by disturbing function space-variant bearing.
8510 仿真结果验证了所提算法的有效性。 The simulation results verify the effectiveness of the proposed algorithm.
8511 多层卫星网络结构复杂,信道资源有限。 Multi-layer satellite network structure is complex, channel resources are limited.
8512 对多层卫星网络信道资源进行高效管理,能够提高卫星系统整体效率。 Efficient management of multi-layer satellite network channel resources, to improve the efficiency of satellite system as a whole.
8513 为此,提出了一种面向多层卫星网络的信道资源管理方法。 To this end, this paper proposes a multi-layer satellite network oriented channel resource management method.