ID 原文 译文
48616 通过在2幅图像中提取空间碎片的边缘,导出了空间碎片中心像点在2幅图像中位置,并利用空间点目标定位算法给出了空间碎片在航天器固连坐标系中的位置。 By 2 images to extract the edge of the space debris, export the center for space debris like point location in the two images, and use the space point target localization algorithm of space debris is given in the spacecraft is the position of the coordinate system.
48617 该系统不仅造价低廉,也实现了空间碎片的快速定位。 The system not only cheap, also has realized the fast positioning of space debris.
48618 仿真结果证明了系统及其定位方法的可行性。 The simulation results prove the feasibility of system and its positioning method.
48619 综合考虑信息融合与资源管控一体化、系统操作简便性等因素,提出了一种通用的基于雷达组网系统工作模式的资源管控闭环功能模型,该模型主要包括信息融合、资源管控、通信链路、人机交互与数据库等功能分系统,体现了结构分级、任务预案、模式控制等设计特点。 Comprehensive consideration of the information fusion and control resources integration and system operation simplicity, is proposed based on a generic radar networking system working mode of resource control closed loop function model, this model mainly includes information fusion, resource control, communication link, the function such as human-computer interaction with the database subsystem, reflects the hierarchical structure, task plan design characteristics, model control, etc.
48620 依据提出的通用模型与典型雷达组网系统的技术体制特点,分别设计了能满足实际应用需求的典型集中式、分布式、层次式/混合式资源管控功能模型,表明了通用功能模型的适用性与有效性。 On the basis of the proposed general model and features of technical system of typical radar networking system, were designed to meet the demand of practical application of typical centralized, distributed, hierarchical/hybrid resource control function model, show the applicability and effectiveness of general function model.
48621 为了提高低密度校验（low density parity check,LDPC）码的打孔性能,提出一种基于校验矩阵优化扩展的码率兼容LDPC码设计方法。 In order to improve the low density parity (low density parity check, LDPC) code of punching performance, put forward a kind of check matrix based optimization design method of extension rate compatible with LDPC code.
48622 从码率兼容码的度分布约束关系出发,提出母码的度分布优化算法。 From rate compatible code the degree distribution of the constraint relations, the mother code distribution optimization algorithm is put forward.
48623 在此基础上,结合打孔变量点的译码恢复规则,构造适合打孔的LDPC码校验矩阵。 On this basis, combining with the rules of decoding recover variable point of drilling, construction of LDPC codes is suitable for punching check matrix.
48624 采用贪婪搜索算法逐级最大化不同类型的打孔变量点数目,提高码率兼容系列子码的误码性能。 The greedy search algorithm step by step to maximize the different types of punching the number of variables, improve the ber performance of rate compatible series subcode.
48625 仿真结果表明,与编码高效的码率兼容LDPC码相比,所提方法生成的码率兼容子码误码性能有较大改善,特别是当码率大于0.8时,编码增益提高约0.7。 Simulation results show that compared with the rate compatible with LDPC code coding efficiency, the proposed method to generate the code rate compatible with child code error performance improved substantially, especially when the rate is greater than 0.8, the coding gain increased about 0.7.