目标

The polarization angular correlation function is calculated by using azimuthal angular averaging.

在L、C及X波段下，首次用极化角相关函数对分形树森林环境中隐蔽目标进行了检测，说明极化角相关函数方法能够抑制杂波，突出隐蔽目标的散射特性，用于杂波环境中隐藏目标的检测。

Models for the electromagnetic interaction between the target and trunks or between the trunks and trunks are developed, and these models are used to derive the coherent fields scattered by the target and fractal forest. Then, the polarization angular correlation function is calculated by using azimuthal angular averaging, and used to detection target buried in forest.

本文用L系统对森林环境进行了理论建模；研究了有限长分层介质圆柱的树干散射模型；分析了倾斜粗糙地面上树干及分形树的电磁散射特性；讨论了环境对确定目标电磁散射特性的影响；研究了环境与隐蔽目标复合电磁散射，用角相关函数、极化角相关函数对隐蔽目标进行了检测。

A tapered incident wave is used to reduce the truncated error. The angular correlation function is calculated by Monte-Carlo generated rough surface, the enhancement on nonmemory line of the ACF can be used to detection a target placed over or under the rough surface.

在散射目标存在时，目标与粗糙面的复合多次散射场的角相关函数，在不满足记忆线条件下也有普遍较高的角相关函数值，即在非记忆线上的增强可以用于检测粗糙面上方、下方的散射目标。

In the passive estimation of mobile target track, the stationary ground platform only provides angular information but no distance information.

在地面固定单站对机动目标的无源轨迹预测中，地面固定单站仅提供目标方位角和高低角信息，而没有提供目标距离信息。

Many numerical results are provided to demonstrate the high resolution of the proposed methods. Compared with the conventional MUSIC method, the proposed methods are insensitive to angular signal distribution.

仿真实验结果表明，这些分布式目标波达方向估计方法都具有较高的分辨能力，与基于点目标假设的常规MUSIC方法相比，本文提出的分布式目标DOA估计方法对信号源的分布特性不敏感。

In this paper are analyzed the principle and use of target angular velocity sensor ,and the target s moving.

针对坦克火控系统中目标角速度传感器的原理和运用与目标实际运动情况分析，阐明了传感器测量目标角速度的误差原因，并给出提高测量角速度精度的措施。

This dissertation deals mainly with the target state estimation theory and application technologies in close-in air-defense and antimissile system.

本文研究了近程防空反导系统中的有关目标状态估计理论与技术，通过分析近程防空反导的国防意义及其所对抗的目标特点和难度，说明了分布式武器系统是对抗近程低空目标的有效措施。

The correction technology is taken on to improve the antipersonnel probability and make the navigation more precise.

采用末端修正技术，使导弹不是飞向目标发动机尾焰中心，而是飞向目标的要害处，这样可以提高杀伤概率，使导引精度进一步提高，以此提高作战效能，有效的摧毁空中目标。

This paper aims to consider the case of assignment problem with multi-objective,involving qualitative and quantitative objective.

考虑了指派问题中涉及到多个目标要求的情况，包括定量目标和定性目标。

Aiming at the diversification of function system and homing modes in the development of submarine-launched torpedo, this paper analyses the advantages in operational application of wake homing torpedo based on its mechanism, such as stronger counter-countermeasure, higher speed, and higher target acquisition probability for selected target. It also analyses the limitations in tactics, such as limited attacking speed and the types of attackable targets, greater loss in torpedo range, difficult combination with wire-guidance, and inaccurate attack on moving targets.

针对国内外潜射鱼雷在功能体制和制导方式等技术环节多元化发展的局面，基于尾流自导鱼雷制导原理，分析了尾流自导鱼雷在作战使用上的技术优势：抗干扰能力强，适宜高速制，可选择攻击目标和捕获概率高；以及其战术局限性：可攻目标的类型及速度受限，鱼雷航程损失大，与线导结合困难，对机动目标攻击效果较差。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了