目标不同

Case studies with the data sets of normal climatic year,different variety types and yield levels at different eco-sites indicated a good performance of the model system in guidance and wide applicability.

利用不同生态点的常年逐日气象资料以及不同品种类型、不同产量目标资料对所建知识模型进行了实例分析，结果表明知识模型对不同条件下冬油菜适宜绿色面积指数的设计具有较好的可靠性和适用性。

Polarimetry properties of electromagnetic waves are sensitive to the scatters permittivity, physical trait, size, orientation and so on. The polarimetric scattering matrix, which describes the backscattering properties of targets completely, can be measured by transmitting and receiving different polarized signals.

电磁波的极化对目标介电常数、物理特性、几何尺寸和取向等比较敏感，通过不同的收发天线组合测量可以得到反映目标散射特性的极化散射矩阵，这为图像理解和目标分析奠定了基础。

In order to evaluate the PREE (Population, Resource, Environment, and Economy) development environment of Yinchuan city, based on the statistics data from Yinchuan Yearbook and the situation of "the eleventh five-year plan" of Yinchuan, choosing different multi-goal preferential factors, the paper established the PREE harmonious development nonlinear multi-goal planning model of Yinchuan city. In this paper, the pattern search method was used to solve PREE nonlinear multi-goal programming, the algorithm and the accomplishment of the Matlab procedure was given.

为评价银川市的经济、人口、资源和环境，根据《银川市统计年鉴》中的数据及银川市"十一五"规划情况，选取不同的多目标优先因子，建立了银川市人口、资源、环境和经济协调发展的非线性多目标模型，介绍了模式搜索法在求解银川市PREE非线性多目标模型的实际应用，给出了求解银川市PREE模型的算法和Matlab程序的具体实现。

Examples have been calculated by use of parameter optimization inverse program.

根据田间实测数据采用开发的参数优化反求程序进行了实例计算，分析比较了采用不同目标函数的结果，结果表明，采用第三种目标函数进行计算，优化结果最理想；并用这些结果与设置相同目标函数的离散变量算法和试算法的结果进行了对比，结果显示，三种算法所得结果没有明显差异。

The motionless backgroup situation usually happens at the video camera parked to opposite quiescent condition , the first wipe off yawp by using pretreatment method,the second using the method of difference Statistic in two frame to analyse and compute background , Above this base to utilize the resumeed background and present frame message detect movement target and it"s movement track ; In dynamic backgroup movement image,it is very difficult to exactly compute ground since the background is varied complexly , the article research the optical flow model、 background model、 moving object detection based on entropy,and depart target from background in movement picture , detect moving target and plain it"s track.

静止背景的情况通常发生在摄像机相对静止状态，首先用预处理的方法去除噪声，其次采用帧间差分统计的方法进行分析计算背景，在此基础之上利用恢复的背景及当前帧的信息检测运动目标及其运动轨迹；对于动态背景的运动图像，由于背景是不断变化且呈现出复杂的特征，因此很难准确求出静止背景，本文在光流矢量场和配准方法的基础上探讨研究了光流模型、背景模型和基于熵的方法，在动态图像上分离不同的目标与背景，直接检测出运动目标并画出相应的轨迹。针对运动图像的复杂性，本文提出了构建模型知识库的设想。

The target model is structured using vector resultant of multi-scatter center. Second, based on the character of land clutter, different kinds of land clutter are simulated. Last, the hardware of the system is designed.

首先分析了目标的反射特性，利用多散射点合成的方法建立目标回波模型；然后根据地杂波的特性，模拟产生了不同分布类型的地杂波；最后设计了脉冲体制目标模拟器的硬件实现方案。

Secondly, 4 methods of azimuth estimation based on vector hydrophone according to forms of nosie and signal are brought forward. The principles of these 4methods are set forth, simulating them by computer. Acoustic intensity averager can effectively suppress isotropic non-coherent interference; DOA based on line-spectra can effectively detect the target radiating line-spectra and estimate its azimuth angle; Bar graph approach can suppress line-spectra coherent interference and distinguish different targets radiating line-spectrum. Weighted bargraph approach can detect target in broadband coherent interference and estimate its azimuth angle.

其次，根据背景干扰和信号样式的不同，提出了单矢量水听器方位估计的4种方法；阐述了这4种方法的原理，并进行了计算机仿真，指出平均声强器方位估计适用于各向同性噪声场背景干扰，讨论了平均声强器的处理增益；目标辐射噪声中有线谱时，线谱方位估计有很好的性能，其中的LOFAR线谱和高频解调得到的DEMON线谱都是目标的特征谱线，可以利用它们进行方位估计，详细讨论了利用特征线谱单个矢量水听器分辨多目标的性能；直方图方位估计能抗强线谱相干干扰；加权直方图方位估计可以抗宽带相干干扰。

A method about space object pose measurement by high-speed TV measurement system is introduced in which measurement rack,collimator and graphics plates with different angle are used to simulate space locomotory object.

介绍了利用高速电视姿态测量系统对目标姿态进行交汇测量的原理，使用检测架、平行光管以及图形板（刻有不同角度的目标刻线）室内模拟无穷远目标姿态。

The production methods are proponed firstly and jamming effect of multi-false-target jamming is analyzed in detail for two kinds of CFAR process,and some valuable conclusions are drown that the multi-false-target jamming effect is similar to the noise jamming effect when these false targets are fairly dense .

在讨论密集多假目标产生方法的基础上，针对两种不同的恒虚警处理，详细分析了密集多假目标的干扰效果，得到一些有价值的结论：当密集程度较高时，多假目标干扰可以起到类似噪声的压制作用，最后进行了仿真验证。

Spatial resolution is not a factor in directional relationships, for people get same answer about a pair of objects under different resolutions; so are not the shapes, scales, and centroids of objects.

空间分辨率不是影响目标间方向关系的因素，同一目标对在不同分辨率下的方向关系不会发生变化；目标的形状、大小、质心和空间方向判断并没有必然的联系。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。