用策略

But you need to start with a coloring strategy and stick with it.

但是一开始，你需要一个使用色彩的策略，并且坚持用这个策略。

The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和贡献如下：●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法，即首先求出多路信号之间的互相关，进而得到互功率谱密度矩阵，然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响，并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来，最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数，利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集；●提出了一种确定FH信号检测门限的策略，该策略不仅使得检测门限能够通过理论计算得到，而且还显著地抑制了非跳频信号的干扰，从而能有效地检测出FH信号；●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法，即首先利用宽带空间谱测向技术得到接收信号的DOA，然后采用宽带波束形成技术对特定方向进行空间滤波，实现多个信号的分离，最后分别提出了两种FH信号的盲检测和参数盲估计方法，第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号，第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号；●将空间插值的概念和宽带波束形成技术结合起来，提出了一种基于频域处理的宽带恒定束宽的波束形成方法。

The empirical curve has since always been the enterprise uses for to analyze the market competition tendency and the development correspondence strategy method, and the experience which accumulates by the enterprise elders takes the main competition weapon, however the science and technology flies suddenly the progress, the enterprise defends stubbornly already has the experience instead to become the barrier which the enterprise develops, therefore in under the dispatch change environment, the experience and the extant channel foundation structure instead becomes the barrier which most difficult to overcome, the success enterprise must establish to the strategy direction sense of smell and continues the vicissitude management system to be able to survive.

一直以来经验曲线是企业用来分析市场竞争趋势及发展对应策略的方法，并以企业长年积累的经验作为主要竞争武器，然而科技的突飞进步，企业固守既有经验反而成为企业发展的障碍，因此在调度变化的环境下，经验及现存通道基础结构反变为最难克服的障碍，成功的企业要建立对策略方向的嗅觉和持续变迁管理体系才能生存。

Firstly, from Gauss' equations and relative motion equations, the relation of control impulse and relative motion was expressed as analysis formulas and simplified based on the near circular condition. By deeply analyzing the mechanism of impulses in each directions (radial, in-track and cross-track directions) effect on relative motion respectively, two maneuvers to establish formation flying are provided: one is to utilize the impulses in radial and cross-track directions, the other is to utilize the impulses in along-track and cross-track directions. Both of the two methods can establish satellite formation flying of any configuration. The method with impulses irradial and cross-track directions needs only 3 impulses, while the method with impulses in along-back and cross-track directions needs 4 impulses. Lastly, by an example of establishing a space-circle formation flying, two maneuvers were compared with each other in the amount of impulses and fuel consuming estimation.

首先由高斯型拉格朗日轨道摄动运动方程得到轨道坐标系中控制冲量与轨道根数偏差的关系，基于近圆轨道的条件简化并带入相对运动方程，得到控制冲量与相对运动的关系表达式；通过深入分析各个方向（径向、沿迹向与轨道面法向）的控制冲量对相对运动的影响，给出了分别用径向与轨道面法向控制冲量组合和沿迹向与轨道面法向控制冲量组合实现编队捕获的两种控制策略；最后给出了一个空间圆编队捕获实例，并从燃料消耗、施加冲量次数及捕获时间等角度对比研究了两种控制策略的特点。

General shipping strategy for the delivery of goods from the vendor to the customer.

货物运送到客户的运送策略。这个策略是不是值，用空运，还是车运，还是火车运。

Finally, the formula of steganographic capacity under passive attacking or active attacking is described.(3) Under analyzing the maneuver of information hider and attacker in a steganographic system, the sets of strategy for hider and attacker is set up.

从一个新的角度，用对策论的观点研究信息发送者和攻击者行为，给出了构造发送者与攻击者的策略集，进而建立隐秘通信系统对策论模型的方法和求解最优策略的算法。

Both simulations and data analysis demonstrated that the random regression model with Legendre polynomial as submodels is more effective than the functional mapping with Logistic curve as submodel in mapping dynamic trait loci

模拟和实例分析结果都证明：以Legendre多项式为子模型的随机回归模型定位策略是有效的，优于用Logistic曲线为子模型的函数定位策略

If "No," use either a make-to-order or a strategy without final assembly for example,

如果"不是"，要么是用按单生产（MTO： Make-To-Order）策略或无最终组装的策略（例如：30、52、63、20、25、26、54、55、56、65、89

If the minimum payoffs of four different strategies A1, A2, A3, and A4 are –10, 15, 0, and –20 respectively, which strategy would a project manager choose, using the "maximin" or Wald criteria?

如果四个不同的策略 A1 ， A2 ， A3 和 A4 的最小报酬分别是-10，15，0，和-20，用"最小最大化"或Wald标准，项目经理会选择哪一个策略？

In this paper, an algorithm based on heuristic function for minimum set covering problem is presented, as well as the definition of complete strategy concept and the method to structure heuristic function.

本文给出了求解NP困难问题的完备策略的概念，在此基础上提出了一个求解集合覆盖问题的启发函数算法SCHF（set－coveringheuristicfunction），文中对该算法的合理性、时间复杂性以及解的精度进行了分析，本文的主要创新点是用已知的完备策略建立启发函数，并用该启发函数进行空间搜索求出优化解。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。