查询词典 colonial expansion

Chirp scaling algorithm is considered more efficient and widely applicable when the bistatic SAR system is in side-look or small squint angle mode,but in large squint angle case,the errors caused by Taylor expansion are so large that the algorithm could lose its precision.In such a case,an equivalent mono-static SAR range mode which has fewer errors than Taylor expansion with large squint angle is proposed to substitute the range history of bistatic SAR.Then bistatic SAR images with large squint angles are gotten by common Nonlinear CS algorithm.The effectivity of the method is verified by Matlab simulation.

在正侧视或小斜视情况下，CS算法具有较好的聚焦性能和广泛的适用性，但在斜视角较大的情况下，该算法将散焦而不能成像，因而提出了用等效的单基地距离模型来代替双基地距离历史的方法，解决了大斜视角情况下距离模型二阶近似误差较大的问题，并结合单基地非线性CS算法，实现了在大斜视角情况下的基于GPS反射信号的双基地SAR高精度成像，最后通过Matlab仿真进行了验证。

a system of along-track mode sar based on the gps is established.by seeing the gps signal as a chirp,chirp scaling algorithm of this mode with large squint angle is investigated.chirp scaling algorithm is considered more efficient and widely applicable when the bistatic sar system is in side-look or small squint angle mode,but in large squint angle case,the errors caused by taylor expansion are so large that the algorithm could lose its precision.in such a case,an equivalent mono-static sar range mode which has fewer errors than taylor expansion with large squint angle is proposed to substitute the range history of bistatic sar.then bistatic sar images with large squint angles are gotten by common nonlinear cs algorithm.the effectivity of the method is verified by matlab simulation.

摘 要：建立了基于gps的顺轨sar系统模型，通过将gps信号等效为chirp信号，研究了在该模式下的大斜视角chirp scaling算法。在正侧视或小斜视情况下，cs算法具有较好的聚焦性能和广泛的适用性，但在斜视角较大的情况下，该算法将散焦而不能成像，因而提出了用等效的单基地距离模型来代替双基地距离历史的方法，解决了大斜视角情况下距离模型二阶近似误差较大的问题，并结合单基地非线性cs算法，实现了在大斜视角情况下的基于gps反射信号的双基地sar高精度成像，最后通过matlab仿真进行了验证。

Team Rocket has been featured in several expansions of the TCG, most notably in the self-named {{TCG|Team Rocket}} expansion, where {{TCG|Dark Pokémon}} were introduced, and the {{TCG|EX Team Rocket Returns}} expansion, which commemorated the release of

火箭队系列TCG已被许多TCG拓展包纳入其中，其中最著名的应该就是以火箭队命名的火箭队

This study mainly from the cement-based self-leveling mortar work, and mechanical properties to consider, analysis superplasticizer, aggregate, mineral admixture, can be dispersed polymer powder to its various properties of addressing the mobility and Stability, as early as strong moderate condensate, the contraction and expansion, superplasticizer incorporation and mortar expansion of the loss of contradictions, and optimize the mix finalization of the scope and mortar flow analysis of factors affecting the performance.

本实验主要从水泥基自流平砂浆的工作性，力学性能考虑，分析高效减水剂、集料、矿物掺合料、可再分散聚合物粉末对其各种性能的影响；解决大流动性和稳定性，早强和缓凝，收缩和膨胀，高效减水剂的掺入和砂浆扩展度经时损失的矛盾，最后确定优化配合比范围；并对砂浆流变性能影响因素进行分析。

In order to forecast and simulate reasonably the behavior of oil spill, the thesis presents a progressive simulation method based on"oil particle"method, namely, dividing the oil spill behavior into self-expansion and turbulent current expansion, then using different numerical methods to simulate and forecast.

为合理地预测模拟溢油的行为动态，本文在&油粒子&模式的基础上提出了溢油运动的分阶段模拟法，即将溢油运动过程分为自身扩展和湍流扩散两个阶段，分别用不同的数值方法进行模拟预测。

In the Subprime Crisis, exchange rate is not the essential cause anymore. The paper reexamines the financial leverage effect, proposing that the system of risk-evading self-expansion, financial derivative products, which transfer credit risks, and the conflicts of monetary policies are the essential causes for the expansion of subprime crisis into global financial field.

汇率不再是海啸的罪魁祸首，文章重新审视当代金融的杠杆效应，揭示自我膨胀的风险逃避机制，金融产品过度衍生传递信用风险，货币政策的有效性冲突是次贷危机全球快速蔓延并形成传染效应的重要原因。

The reverse force self-expansion rivet as one fastener part has one small head and one small-diameter neck in the root part as well as one integral expansion sheet with the same diameter as the shaft in between.

目前国内外所使用的《胀钉》是螺杆式的《他胀钉》，它构件多，成本高。因此，本人发明了简易的《反力自胀铆钉》来满足各种材料的铆制紧固上。其结构特点是在钉杆根部有直径偏小的颈部和小头，还在其间有与杆同径连体的胀片。

Based on our study in the extrusion press of food expansion in recent years the paper summarizes the basic principles of machining methods of the screw the key spare part of extrusion press of food expansion .

本文结合近年来对食品膨化挤出设备的研究，论述该设备上关键零件--挤压螺杆的几种加工方法的基本原理。

If there is no government fund investment, 23% said would give up the business expansion plans, about 50% of the delayed or significantly reduce the scale expansion plan.

若没有政府基金的投资，23%的企业表示会放弃业务扩展计划，50%左右的会延迟或显著降低业务扩展计划的规模。

On the basis of analyzing the output signal of a two wavelength beat-wave absolute distance interferometer, this paper proceeds from the realities of the aiming method of the beat-wave interferometer, conducts an analytical investigations on the dependence of the aiming accuracy of the beat-wave interferometer on laser dual-line output power equilibrium, propose two new concepts-a basic aim blind area and a blind area expansion, and establishes an analytical expression between the blind area expansion and the relative power difference of laser dual lines.

本文从拍波干涉仪对准方法的实际出发，在分析双谱线拍波干涉仪输出信号的基础上，研究了双谱线功率不一致与拍波干涉仪对准精度的关系，提出了基本对准盲区和盲区扩大量的新概念，建立了描述盲区扩大量与双谱线相对功率差之间关系的解析表达式。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。