ID	原文	译文
5244	基于此，完成了一类称作带冲突检测的两阶段无连接接入协议的性能极限与最优资源分配策略的理论分析，并设计了一种不需要用户数估计的动态资源分配算法。	Based on this, a comprehensive theoretical analysis of one kind of TSCLA with collision detection wasconducted to investigate its performance limit and devise its optimal resource allocation scheme.
5245	数值分析验证了上述理论分析的正确性，表明了所提动态资源分配算法与已知每个接入周期内用户数的理想算法的性能差异可控制在 4%以内。	In addition, to avoid thecomplexity of user number estimation, a dynamic resource allocation algorithm with feedback control was proposed.Numerical results are provided to validate the effectiveness of aforementioned theoretical results and show that comparingwith the genie aided algorithm known exactly the number of users, the performance loss of the proposed algorithm is within4%.
5246	上述结果可为面向海量机器类通信的无线接入协议的优化设计提供参考。	These works together provide good references for appropriate resource dimensioning for mMTC related protocols.
5247	受扩频通信技术启发，提出了端信息扩展的概念，利用多项端信息组成的序列来表示一条信息，使通信端信息与所传递信息无关，实现了端信息高隐蔽传输。	Inspired by the spread spectrum technology for communications, the concept of end spreading was proposed to represent a piece of information of the data transmission with a sequence of multiple end information, of which eachpiece of end information was irrelevant to the information it conveys. Thus the covert data transmission can be performed.
5248	进一步提出了端信息跳扩混合主动网络防御技术，将端信息跳变策略与同步策略分离，通过端信息扩展机制实现跳变通信双方的同步认证，解决了高隐蔽性要求下的高速跳变同步问题。	Further, an active cyber defense model of end information hopping and spreading was presented, in which the hopping strategy was separated from the synchronization strategy. The synchronization was accomplished by means of end infor-mation spreading for synchronous authentication of both parties, which can solve the high-speed hopping synchronization problem with high concealment requirements.
5249	详细讨论了端信息跳扩混合主动网络防御技术中扩展序列的生成、传输、同步认证方式和数据迁移策略，并对所提模型的安全性能和同步性能进行理论分析与实验验证。	The mode of generation, transmission and authentication of the spreading sequence, and the data migration strategy in the end hopping and spreading model were described in detail, and the secu-rity performance and synchronization performance were analyzed and verified experimentally.
5250	理论分析与实验结果表明，端信息跳扩混合主动网络防御技术提升了高速跳变下网络服务的可用性和隐蔽性，对于高强度对抗要求的主动网络防护应用具有重要意义。	Theoretical analysis andexperimental results show that the cyber defense model of end information hopping and spreading has improved the availability and confidentiality of network services under high-speed hopping and has good anti-attack performance,which is of great significance for the proactive defense application of high intensity confrontation.
5251	因地球表面并非平面，采用平面坐标的传统 TDOA 无源定位模型可能存在一定的误差。为了直接利用大地经纬度坐标进行 TDOA 定位，提出了基于球面两点间距离计算的一系列球面距离计算 TDOA 定位模型。	Because of the surface of the earth is not a plane, there may be some errors in the conventional ultra-short wavepassive TDOA location method using plane coordinates. In order to use the geodetic longitude and latitude coordinates di-rectly for TDOA location, a series of spherical distance TDOA location models based on spherical two-point distance calcu-lation were proposed.
5252	通过最优化建模，以网格逐点搜索求解法进行模型验证。	The optimal location models were adopted, and a grid point search method was applied with model va-lidation.
5253	数值分析结果表明，球面精确计算模型定位误差最小，与纬度无关；	The numerical results show that the spherical precise calculation model has the smallest positioning error, which isindependent of latitude.