The family of uavs continues to evolve based on field experimentation , service requirements , and operational requirements from the various warfighting commanders in chief 无人飞行器家族通过野外实验,服务要求,并主要由于多变的战斗指挥要求引起的操作要求而不断地发展。
Abstract : in view with the training target and special characteristics of students from department of professional teacher , and based on many years experience in teaching , this paper make an inquiry into teaching methods for the course of field experimentation and statistical methods . it is suggested that the key to the teaching of this course is to teach students according to their aptitude and to lay stress on practice 文摘:针对职业技术师范生的培养目标及其特点,在多年的教学实践中对田间试验和统计方法课程的教学进行探讨,认为因材施教,突出重点,旨在应用,注重实践,是上好该门课程的关键所在。
Voice communications and data transmission made along beijing s expressway removed doubts in people s mind about speed of terminal movement and coverage radius of base station of tdd mode . as a result of the experimentation , the datang group and the siemens company plan to organize a large - scale td scdma field demonstration in the near future . according to technical personnel who participated in the field experimentation , with progress of the experimentation , speed of terminal movement allowed by the system can be raised further 经过在北京高速公路上所做的现场通话和数据传输试验表明: td - scdma终端的移动时速可以达到125km ,基站信号功率覆盖半径超过16km ,且通话话音清晰,图象传输稳定,这一试验结果完全证明td - scdma技术标准完全符合国际电联( itu )对第三代移动通信的要求,消除了人们对于tdd模式在终端移动速度和基站覆盖半径的疑虑。
By means of laboratory and field experimentation of typical semi - rigid base materials , the relationships among laboratory experimental values , field maintain values , field core values and construction criteria are put forward . and the relationships between different test methods are established . using time - temperature conversion principle , it processes the intensity assessment of field cores , then offers the method of determining the test deflection of pavement surface 通过典型半刚性基层材料的室内外试验,研究主要设计参数的室内试验值、野外养生值、现场取芯值及施工指标间的关系,建立了不同试验方法间的相关关系,运用时温换算法则,对现场芯样进行强度评定,并提出了路表弯沉检测标准的确定方法。
In this article , on the basis of analyzing the millimeter - wave technology and its applications , the signal of objects and mathematical simulation of passive - method millimeter - wave are discussed , and the half - real simulation model are build , then the equivalent relationship of inner simulation and field experimentation is researched . at last , the practical way of criterions of measuring the passive - method millimeter - wave detection system is given on the basis of this method 论文在分析毫米波探测技术及其应用的基础上,讨论了毫米波被动式探测体制的目标信号及数学仿真问题,建立了相应的半实物仿真系统,并研究了室内仿真与野外试验的等效关系,最后给出了用该方法进行毫米波被动式探测体制系统指标测试的具体方法。
While progress was made on system technology , substantive breakthrough has also been made in developing td scdma terminal . development of prototype of td scdmagsm dual - mode terminal has been completed and production of more than 300 sets of experimental terminals is under way . the experimental terminals will be used in operators field experimentation 在系统技术取得进展的同时, td - scdma终端开发也取得实质性突破: td - scdma gsm双频双模终端已完成原理样机的开发, 300余台试验终端已投入生产,将用于与运营商的现场试验。