ID 原文 译文
25585 该网络解决了传感器网络中电池不易更换与节点能量容易耗尽的问题,使得 RFEH-WSN 应用前景更加广阔。 The RFEH-WSN solves the problems of the battery replacement and node energy depletion, which makes it have more advantages in the future application.
25586 RFEH-WSN应用中一个值得研究的问题是如何布置 ET 的充电位置,降低 ET 能耗且提高覆盖率。 How to place ET effectively with minimum energy consumption and maximize overall charging utility is one fundamental issue in RFEH-WSN.
25587 已有的工作主要考虑 ET 布置中单目标优化问题,如最小充电时间、最小功耗、最大覆盖率等。 In this paper, a new multiple object model is proposed, and the optimization aims of the model are to minimize the charging time and to maximize the coverage.
25588 本文以时间最小和覆盖率最大为目标建立多目标优化模型,并提出利用粒子群算法(Particle Swarm Optimization,PSO)求解多目标函数(Multiple Object Program,MOP)的低复杂度近似算法,获得了最优 Pareto 解集。 An approximate with low complex algorithm is proposed to solve this multi-object function byPSO optimizer, and from it an optimum pareto solution set is obtained.
25589 仿真结果表明,多目标优化可以满足不同情况的需求,提高充电效用。 The simulation results show that the new methods can improve the charging efficiency obviously and satisfy the different demands for lots of application environments.
25590 移相器是相控阵雷达的核心器件,随着工作频率的逐步提升,传统移相器的插入损耗和相位控制误差恶化严重,导致额外增加的功耗及波束性能变差。 Phase shifter is the core device of phased array radar (PAR). With the gradual increase of the working frequency, the insertion loss and phase control error of the traditional phase shifter get worsen seriously, resulting in additional power consumption and poor beam performance.
25591 本文基于电荷泵锁相环(Charge Pump Phase-Locked Loop,CP-PLL)开展了高精度数字移相方法的研究。 In this paper, a high-precision digital phase shifting method based on CP-PLL is investigated.
25592 在分析 CP-PLL 相位数学模型与移相机理的基础上,提出了通过数控电流源的方法实现对输出信号相位的精确控制,建立电路模型开展仿真分析,并设计了实验电路模块,通过仿真和实测的对比验证了该方法的有效性和精确性,实现了移相步进优于 1°,移相精度优于移相值的 10% Based on the analysis of CP-PLL mathematical model and phase-shifting mechanism, the method of numerical control current source is proposed to realize the accurate control of the output signal phase, the circuit model is established to carry out simulation analysis,and the experimental circuit module is designed. The effectiveness and accuracy of the method are verified by the comparison of simulation and measurement. The results show that the phase-shifting step is better than 1°, and the accuracy is better than 10% of the phase-shifting value.
25593 CP-PLL 可通过作为本振信号或直接产生发射信号应用于相控阵雷达系统中,具有精度高、功耗低、易集成等特点,从而取代移相器,有效提升相控阵雷达的性能。 The CP-PLL can be used in PAR as a local oscillator or as a direct transmitter signal. It has the characteristics of high precision, low power consumption and easy integration, which can replace the phase shifter and effectively improve the performance of PAR.
25594 为了解决符号执行中路径爆炸、新路径发现率低等问题,提出了针对文件格式数据块约束的符号执行分析方法(FFCBSE,File Format Constraint Based Symbolic Execution)优化框架。 To solve problems like path explosion, low rate of new path's finding in the software testing, a new vulnerability discovering architecture based on file format constraint (FFCBSE) was proposed.