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target range     
相关语句
  目标距离
     Transform of Chirp-Z is a high resolution IFFT technology,which can acquire the analysis of high resolution to interested area,gain the elaborate target range imaging,and improve the resolving power of target strong scatter center.
     Chirp-Z变换是一种高分辨力的IFFT技术,它能只对感兴趣的区域进行高分辨力分析,获得精细的目标距离像,提高目标强散射中心的分辨能力。
短句来源
     Ground Target Detection and Tracking Based on Target Range Profiles
     基于目标距离像的地面目标检测和跟踪
短句来源
     This paper introduces the system of target simulation and jamming based on DRFM. We simulate target range by controlling delay time of pulse,and velocity by controlling frequency of DDS. This paper also presents the design method of realizing multiple targets in one channel and the solution to the synchronization problem of different channels.
     介绍了基于DRFM(数字射频存储器)的雷达目标模拟与欺骗干扰系统中,通过控制DRFM的读出时间,以模拟运动目标距离控制DDS(直接数字频率合成器)的频率控制多普勒频移,以模拟运动目标的速度,给出了单通道模拟多个目标和产生欺骗干扰时控制电路的实现方法,解决了多通道模拟目标及欺骗干扰时通道间同步问题。
短句来源
     Radar Target Range Profile Recognition by Using Adaptive Matched-Filters
     自适应相关匹配法在雷达目标距离剖面像识别中的应用
短句来源
     A light laser multipurpose test instrument for detecting visibility and target range
     一种激光便携式大气能见度、目标距离综合测试仪
短句来源
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  靶场
     It can be used in such areas as target range and electronic warfare.
     它潜在的用途包括靶场测量、电子战等诸多方面。
短句来源
     Through the analysis to the character of target range experiment,the model of EW weapon efficiency evaluation under the usage of AHP is introduced,emphasizing the description of how to attain the weighted value and efficiency value in the evaluation,accompanied with examples.
     通过对靶场试验特点分析,运用AHP法介绍了电子武器效能评估模型,重点对评估中的加权值和效用值的获取方法进行了描述,并举例说明。
短句来源
     The Communication Platform, which has been used for an actual project "fish torpedo target range information fusion and integrated control display system", shows that it has the characteristic of scalability, generality and convenience .
     该平台在“鱼雷靶场信息融合和综合指控显示系统”的科研项目中得到实际应用,应用结果表明基于DSM构建的实时仿真通信平台具有较高的可扩充性、通用性、方便性。
短句来源
  对象范围
     Further narrow the target range of Potter's different strategy,this paper points out the interaction between different strategy and low cost strategy,which are the two determinant variables of enterprises' strategic choice.
     进一步细化迈克尔·波特差异化战略的对象范围 ,指出了差异化战略与低成本领先战略在企业发展过程中的相互关系 ,它们共同决定着企业的战略选择
短句来源
     The authors further analyses the problem of the adjustment target range in the Economic Law, and puts forward their view.
     在此基础上分析了经济法的调整对象范围问题,并提出了自己的观点。
短句来源
  指标范围
     Probe into pH Target Range of Shao Xing Wine & Prevention and Control of Target-Exceeding
     黄酒pH值指标范围的探讨及超标的预防控制
短句来源
     The best target range of attribute sets for examining could be obtained through analyzing the history data of aluminum electrolysis cells, namely attribute partition satisfied minimum support.
     在模型中,通过对电解槽的历史数据进行分析,获得属性集的最佳考核指标范围,即满足最小支持度的属性划分;
短句来源

 

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      target range
    The study objectives were to assess anticoagulation control (time in target range), and to describe the features of the local model of care.
          
    Establishing a New Target Range for Unfractionated Heparin for Acute Coronary Syndromes
          
    The results were within the target range in 83.1% of the PT determinations (n=12,306 measurements) taken by the patients themselves.
          
    For patients receiving more intensive treatment with an assigned target range of INR 3.0-4.5, computerized dosage programs achieved significantly better control.
          
    A second level is therapeutic quality control, which is the evaluation of how well a clinic maintains the patients within the specified target range of anticoagulant intensity.
          
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    : It is often troublesome, or even difficult, for the narrow band system in a coherent-pulse instrumentation radar to precisely track the radial speed of the target under conditions of low pulse repetition frequency of the radar and high speed and acceleration of the target.A method is given in this paper to bring about an all digital tracking system on the basis of modified DFT. Such system can track not only the radial speed of the target, but also its acceleration directly in conditions of low repetition...

    : It is often troublesome, or even difficult, for the narrow band system in a coherent-pulse instrumentation radar to precisely track the radial speed of the target under conditions of low pulse repetition frequency of the radar and high speed and acceleration of the target.A method is given in this paper to bring about an all digital tracking system on the basis of modified DFT. Such system can track not only the radial speed of the target, but also its acceleration directly in conditions of low repetition frequency and high target speed and acceleration.The first part of the paper describes the influence of target radial acceleration on DFT. the modified DFT which can eliminate the said influence, and the two dimensional response characteristics of the frequency and the frequency changing rate of this modified DFT. The second part explains the method of eliminating speed ambiguity by repetition frequency agility. This method is based on solving residual equations for root and does no depend on target range information. The third part deals with the narrow band tracking loop based on modified DFT. Two dimensional error characteristics of the frequency and the frequency changing rate are presented, and a block-diagram of the system is also given.The author has conducted mathematical simulation of the above system. The results show that the accuracy in the measurement of radial speed and acceleration is quite satisfactory under the condition of comparatively low signal-noise ratio.

    本文侧重讨论了用于相参脉冲测量雷达的、以修正DFT为基础的信号处理方法。在雷达低采样率工作下以及在目标高速、高加速度运动条件下,这种方法不仅可以精确地跟踪目标的径向速度,同时还可精确地直接跟踪目标的径向加速度,从而可以构成全数字二维复合跟踪系统。

    The test of plasma progesterone in 35 normal and 29 pregnant rabbits and 51 ratswas performed with WHO radioimmunoassay progesterone kit.If the assay is used onsamples from different species to determine the circulating levels of hormone,some levelsmay not fall in the target range of the assay,and crossreactant may be present in thesamples to interfere with the measurement,therefore it is advisable to validate the assay.The validation of an assay is as follows:1) To observe the parallelism betweenthe test...

    The test of plasma progesterone in 35 normal and 29 pregnant rabbits and 51 ratswas performed with WHO radioimmunoassay progesterone kit.If the assay is used onsamples from different species to determine the circulating levels of hormone,some levelsmay not fall in the target range of the assay,and crossreactant may be present in thesamples to interfere with the measurement,therefore it is advisable to validate the assay.The validation of an assay is as follows:1) To observe the parallelism betweenthe test sample and the standard used for assay.The test results of the two showed thatthey were parallel with each other;2) To observe the recovery of cold hormone.Therecovery rate of our tests was more than 90%,and the precision was in agreementwith precision dose profile(PDP).The within group error was<10% and within batcherror<15%.

    使用世界卫生组织提供的放射免疫测定孕酮药盒测定家兔和大鼠血浆孕酮。在使用前必须经过方法学可靠性检验,即进行平行性试验及回收率试验以阐明方法的可靠性。平行性试验用回归系数间差异的显著性测验,回收率试验要求回收率在90%以上,以及标准曲线的精确度图谱(PDP)以示方法灵敏度;另外对实验误差有一定的要求,批内误差 CV<10%,批间误差 CV<15%。

    In this paper, the initiation and development of observations on the insect flight by radar were briefly reviewed. An equipement of the entomological radar was set up in China in 1981-1984. And its characteristics and the results of observation!) on the stable insect targets and releasing mobile insect targets by this radar were described.The Gongzhuling Entomological Radar was equiped with the major parts of Japense marine radar, type.JMA-510G-6, Which was fixed with the antenna system of Chinese...

    In this paper, the initiation and development of observations on the insect flight by radar were briefly reviewed. An equipement of the entomological radar was set up in China in 1981-1984. And its characteristics and the results of observation!) on the stable insect targets and releasing mobile insect targets by this radar were described.The Gongzhuling Entomological Radar was equiped with the major parts of Japense marine radar, type.JMA-510G-6, Which was fixed with the antenna system of Chinese meteorological radar, type 711. Its characteristics are as follows:A radar antenna system with a double-dipole feed and a 1.5m (diameter) parabolic grid disk, peakpower output 10Kw, wave length 3cm, pulse length 0.08-1.2us, beam angular width horizontal 1.5°, vertical 1.5° and range scales 0.25, 0.5, 0.75, 1.5, 3, 6, 12, 24, 48nm.Results of simulation observations indicate that the Gongzhuling Entomological Radar is a very useful aid for research on insect migration. Echoes reflected from insect targets range 80-1000m apart were displayed clearly. It can measure exactly the height, density, position, airspeed and flight rhythm of individual migrating insect.This radar is installed on a turuck and with a generator (5Kw) on a trailer. The set is suitable to move and work in the field.

    本文简述了国际昆虫雷达发展的概况,报道公主岭昆虫雷达的应用。列出高塔、气球吊挂昆虫和地面释放昆虫的测试结果,并总结经验提出了观测方法。

     
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