ID 原文 译文
10264 未来的来袭导弹可能具备较强的机动性,其弹道不可预测,针对拦截弹追击此类目标的追逃问题,基于微分对策(differential game,DG)理论建立追逃博弈模型并给出求解方法。 Future incoming missile might have strong maneuverability, the ballistic unpredictable, in view of the interceptor pursue such a goal pursuit problem, based on differential game (differential game, DG) theory to establish pursuit game model and solving method is given.
10265 模型在分析两者相对运动的基础上,考虑地球重力和自转的影响,以推力角为控制变量,离地高度、速度和经度角为状态变量,建立微分方程组。 ‭Model based on the analysis of relative motion between, on the basis of considering the earth rotates, the influence of gravity and thrust Angle as control variable, the height from the ground, speed and longitude angles as state variables, establish a system of differential equations.
10266 然后将追逃DG模型转化为单边最优对策问题; ‭Then unilateral pursuit DG model can be converted to the optimal countermeasures problem;
10267 并给出改进的高精度五阶Gauss-Lobatto多项式配点法来近似状态变量对时间的导数,将微分方程组转换为代数约束,降低非线性规划问题复杂程度。 Is given, in order to improve the precision of Gauss - Lobatto polynomial collocation method state variable is approximated by the derivative of the time, the system of differential equations into algebraic constraints, reduce the complexity of nonlinear programming problems. ‭
10268 最后给出了本文研究的仿真实例。 Finally the simulation instance is given in this paper.
10269 目前,天波超视距雷达(over-the-horizon radar,OTHR)大多是在空域或匹配滤波后的时频域抑制射频干扰,往往会同时抑制掉射频干扰附近的目标。 At present, the sky-wave over-the-horizon radar (over - the - horizon radar, OTHR) are mostly in the time-frequency domain after the airspace or matched filtering restrain radio frequency interference, often can inhibit off at the same time the target near the radio frequency interference.
10270 考虑到在匹配滤波后,射频干扰与目标信号都是近似单频信号难以区分; ‭ After considering the matched filtering, radio frequency interference and the target signal is similar to single frequency signal is difficult to distinguish between; ‭
10271 而在匹配滤波前,目标信号是宽带的线性调频信号,而射频干扰是近似单频的窄带信号,射频干扰与目标信号显著不同,易于分离。 And in front of the matched filtering, target signal is broadband linear frequency modulation signal, and radio frequency interference is approximate single frequency narrowband signal, radio frequency interference and the target signal is significantly different, easy to separate.
10272 基于该特点,提出了一种基于匹配滤波前的频域干扰置零的射频干扰抑制算法。 Based on this characteristic, this paper proposes a frequency domain based on matched filtering before interfere with zero rf interference suppression algorithm.
10273 该算法在频域中检测射频干扰的频点位置并将该频点的信号成分置零,最后变换到时域实现射频干扰抑制。 The algorithm in the frequency domain to detect the frequency of the radio frequency interference point location and the frequency of the signal components of zero, radio frequency interference suppression is realized by transform in time domain.