ID 原文 译文
10084 由于水声信道的复杂性和多变性,信号在水声信道传播中将伴随着多径时延与多普勒频移,二者是水声信道估计中两个重要的参数。 Due to the complexity and variability of multipath underwater acoustic channel, signal in underwater acoustic channel transmission with multipath time delay and doppler frequency shift, they are two important parameters in underwater acoustic channel estimation.
10085 基于分数阶傅里叶变换(fractional Fourier transform,FRFT)的时延和频移特性,提出一种采用多分量线性调频(linear frequency modulated,LFM)信号的水声信道估计方法。 ‭Based on fractional Fourier transform, fractional Fourier transform, the FRFT) of time delay and frequency shift characteristics, puts forward a kind of multi component of linear frequency modulation (linear frequency modulated, LFM) signal of underwater acoustic channel estimation method.
10086 通过分析分数阶傅里叶域上峰值的偏移,联立不同阶次的时延和频移方程,可得到水声信道的时延和频移值。 Through the analysis of fractional Fourier Ye Yu peak shift, simultaneous different order time delay and frequency shift equation, the underwater acoustic channel of time delay and frequency shift can be obtained.
10087 理论推导及仿真结果表明,该方法计算量小,且随着LFM信号分量数和调频率差值的增大,能在一定程度上减小估计的时延误差和频移误差。 ‭Theoretical derivation and simulation results show that this method is a small amount of calculation, and as the number of LFM signal component and the increase of frequency difference, can to a certain extent, reduce the estimated time delay error and frequency shift error.
10088 水池实验中选用具有相反调频率的双LFM信号作为估计信号,估计出多径时延与运动目标的多普勒频移,并给出了水下目标的运动速度。 ‭Pool in use in the experiment with opposite rate of double LFM signals as estimated, estimate the multipath time delay and moving target doppler frequency shift, and the rate of movement of the underwater target is presented.
10089 实验结果表明,FRFT估计法简单有效,在水声信道多径时延与多普勒频移估计上具有较好的实际应用价值。 ‭The experimental results show that the FRFT estimation method is simple and effective, in the underwater acoustic channel multipath time delay and doppler frequency shift estimation has better practical application value. ‭
10090 建立飞行作战任务过程模型是综合运用态势评估、故障诊断等技术设计新一代智能座舱的基础,同时也可应用于飞行员的行为预测及评估。 Flight mission process model is the integrated use of situation assessment and fault diagnosis technology design, the basis of a new generation of intelligent cabin at the same time also can be applied to the pilot's behavior prediction and evaluation.
10091 本文以战术轰炸任务为例,介绍了工作流网技术在飞行作战任务建模上的应用。 In tactical tasks, for example, this paper introduces the work inside technology application in flight mission modeling.
10092 针对传统Petri网不能体现态势变化对飞行员行为的影响,本文设计了带非齐次弧的分层Petri网应用于战术轰炸任务过程的工作流网建模中,使子网变迁的平均实施速率可以随着航线状态的变化而变化,同时给出了利用可达性定理证明工作流网合理性的方法。 For traditional Petri net can't reflect the impact of situational change of pilot behavior, this paper designed the arc with inhomogeneous stratified Petri net is applied to the tactical mission work inside of the process of modeling, the average implementation of subnet change rate can be as the change of state of routes and change, at the same time was given by using accessibility theorem proving work inside rationality of the method.
10093 在子网中,设计了变λ随机Petri网应用于飞行员执行任务过程的建模中,并利用该模型分析了飞行员的稳定工作状态,为飞行员行为预测、评估建立基础。 In subnet, designed the lambda stochastic Petri net is applied to the pilot to perform a task in the process of modeling, and using the model, analysis the stability of the pilot work status, established for the pilot behavior prediction, evaluation basis.