查询词典 range estimation

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。

The crankshaft shrinkage range employed in "Rule of the Construction of Sea-going Steel Ship" is selected from that of Lloyd's Rigister of Shpping used before 1965, in which the value of shrinkage range is determined only according to the size main journal diameter.

在我国&钢质海船建造规范&中，有关红套曲轴过盈量的规定是沿用1965年以前英国劳氐船级社的标准，过盈量的数值仅以套合轴颈的直径为基准来选取。

He is fluent in all kinds of close-range magic, especially in his "red-lipped kiss" of the General Assembly at the International Magic on the prize, and soon became a classic close-range magic.

他精通各类近景魔术，特别是他的《红唇之吻》在国际魔术大会上获奖后，很快就成为近景魔术的经典。

Color gamut is a shading pattern that can be expressed in the number of colors range area, also referred to as specific media such as screen displays, printers, output and business card printing and membership card making copies the appearance of a color range.

色域不离是指某栽表色模式所能表达的颜色数目所构成的边界地区，也指抽象介质如屏幕表现、打印机输入及制卡和会员卡制作复制所能表现的颜色边界。

F/A-37. Although specs are classified, it is believed to be Mach 3.5 (top speed in the Mach 4 range) super-cruise stealth fighter/bomber/interceptor with approximately a 4,000nm range.

虽然规格进行分类，它被认为是3.5马赫（最高速度在4马赫范围）超级巡航隐形战斗机/轰炸机/有大约4000海里范围内拦截。

CNN -- Pakistan successfully tested a short-range surface-to-surface ballistic missile with a range of 200 kilometers (124 miles) Saturday, the Pakistan Army said in a statement.

周六，巴基斯坦成功进行了一次短程地对地弹道导弹的实验，射程为200千米（124英里），巴基斯坦的军事部门在一个发布会上这样说。

On the basis of analyzing forecast model of current software reliability synthetically, reliability analysis and evaluation for the control software of servo system, and for the operating and aiming calculation software of fire control system of long-range rocket gun system are also carried out. Theoretically analyzing and designing the reliability qualification tests for the long-range rocket gun weapon system are conducted in this paper, and the correlative results of reliability tests during the development of the weapon system are counted and researched synthetically.

针对目前武器系统软件可靠性存在的问题，分析了影响武器系统软件可靠性的主要因素；结合武器系统软件寿命周期各阶段的工作内容、要求及质量变化规律，研究分析了提高武器系统软件可靠性的设计方法和测试与评估模型，在综合分析了现行软件可靠性预测模型基础上，对远程火箭炮随动系统控制软件、火控系统操瞄解算软件进行了可靠性分析与评估。

At last, fusing the modern information theory and technology, probability theory, random process theory and mathematics logic theory etc., synthetically applying various reliability information in each subsystem or unit of the long-range rocket gun system, this paper systematically evaluates the reliability of long-range rocket gun system, which provides quantitative reference for design finalization, production and application, and researching equipment reliability growth of the weapon system.

对远程火箭炮武器系统可靠性鉴定试验进行了理论分析与设计，对型号研制中有关可靠性试验结果进行了统计和综合研究；最后，融合现代信息理论与技术和概率论、随机过程理论、数学逻辑理论等数学方法，综合利用远程火箭炮各分系统或单体的各种可靠性信息，对远程火箭炮武器系统可靠性进行了系统评估，为远程火箭炮武器系统设计定型、生产与使用，开展装备的可靠性增长工作提供了定量依据。

At last, fusing the modern information theory and technology, probability theory, random process theory and mathematics logic theory etc., synthetically applying various reliability information in each subsystem or unit of the long-range rocket gun system, this paper systematically evaluates the reliability of long-range rocket gun system, which provides quantitative reference for design finalization, production and application, and researching equipment reliability growth ofthe weapon system.

对远程火箭炮武器系统可靠性鉴定试验进行了理论分析与设计，对型号研制中有关可靠性试验结果进行了统计和综合研究；最后，融合现代信息理论与技术和概率论、随机过程理论、数学逻辑理论等数学方法，综合利用远程火箭炮各分系统或单体的各种可靠性信息，对远程火箭炮武器系统可靠性进行了系统评估，为远程火箭炮武器系统设计定型、生产与使用，开展装备的可靠性增长工作提供了定量依据。

This paper first presents the variation regularity of active seeking range along with the change of relative bearing ,and then derives out the equations of deflection firing angle considering the variation of seeking range. A method for the calculation of optimal deflection firing angle of snake search torpedo is provided at last.

本文根据主动自导作用距离随舷角变化规律，推导了考虑到自导作用距离随舷角变化时求解最优提前角的迭代公式系，最后提出了蛇行搜索鱼雷射击的最优提前角求解方法，并给出了有关结论。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。