ID 原文 译文
38466 仿真结果与分析表明所提方法在相同估计精度条件下可以有效地降低轨迹匹配复杂度,且所提算法可以有效地跟踪实际相位噪声轨迹,在保证码本覆盖范围的前提下得到了接近最优的测距精度。 The simulation results and analysis show that the proposed method under the condition of the same estimation precision trajectory matching complexity can be reduced effectively, and the proposed algorithm can effectively track the actual phase noise trajectory, on the premise of guarantee code coverage has been close to the optimal ranging precision.
38467 主要介绍一种通过改进各类轨道摄动项的表达形式,以优化计算效率的轨道分析解改进方法。 Mainly introduces a kind of by improving all kinds of orbital perturbation of expression form, to optimize the computation efficiency of orbit analysis solution method.
38468 以低地球轨道为例,阐述了轨道分析解改进后的具体算法,并通过数值仿真分析验证了算法的有效性和实用性。 In low earth orbit, for example, this paper expounds the track analysis of the algorithm, the improved solution and numerical simulation analysis proves the validity and practicability of the algorithm.
38469 算法以第一类无奇点根数作为轨道状态量,采用开普勒轨道根数计算各类摄动力的长期、长周期和短周期项,通过较简单的组合形式计算无奇点根数的对应摄动项,实现在保持分析解精度和消除小偏心率奇点的同时,提高计算效率。 Algorithm in the first category no singularity root number as orbital volume, all kinds of disturbing force is obtained by using the Kepler orbital root number, short cycle and long cycle for a long time, by a simple combination calculation without root number corresponding to the perturbation of the singularity, achieve in keeping the precision of analytical solution and to eliminate small eccentricity of singularity at the same time, improve the computational efficiency.
38470 仿真结果表明,分析解算法的模型精度在1E-5量级,符合一阶分析解理论精度的预期 Simulation results show that the model precision of the analytical solution algorithm in 1 e - 5 orders of magnitude, conforms to the first-order theory analysis solution precision expectations;
38471 ;同时计算速度达到传统分析解算法的4倍左右,可有效提升空间碎片轨道预报的计算效率,具有较强的工程应用价值。 At the same time to calculate speed to 4 times the left and right sides of traditional analysis solution algorithm, which can effectively improve the forecast of space debris trajectory efficiency, with strong engineering application value.
38472 针对高超声速平台杂波距离走动与多普勒走动导致的传统空时自适应处理方法杂波抑制性能严重下降的问题,首先建立了高超声速平台杂波空时二维模型,并通过分析杂波空时特性,得出与慢速平台相比,杂波走动造成杂波非均匀性增加和多普勒展宽更严重,非均匀性增加和多普勒展宽程度与脉冲积累时间、杂波块位置均有关。 For hypersonic platform clutter walking walking distance and doppler in the traditional method of space-time adaptive processing clutter suppression performance of the decline of the serious, hypersonic platform was established by the clutter space-time two-dimensional model, and through the analysis of clutter space-time characteristics, it is concluded that compared with slow platform, clutter ambulate more clutter heterogeneity and doppler broadening is more serious, and degree of heterogeneity and doppler broadening and pulse accumulation time, clutter block position.
38473 最后,提出利用keystone变换校正杂波距离走动,并通过补偿矩阵补偿杂波多普勒增量的杂波抑制方法。 Finally, put forward the keystone transform correction clutter walking distance, and through the matrix clutter doppler compensation incremental method of clutter suppression.
38474 仿真结果表明,所提方法能够使杂波抑制凹口变窄,明显提高主瓣区的动目标检测性能。 The simulation results show that the proposed method can narrow the gap of suppressing clutter, significantly improve the main lobe of moving target detection performance.
38475 可用度是评估备件对装备完好性影响的重要指标,针对备件关键性对装备可用性造成影响而又难以将其考虑在内建立可用度模型的问题,以舰载通信电台辐射干扰对消装备为对象,采用对备件关键性实行专家打分的方法,将备件关键性作为备件配置优化的约束之一,建立以备件费用、备件体积、备件关键性为约束的备件配置优化模型。 Availability is important indicator, the influence of spare parts for equipment reliability assessment for critical spare parts for equipment availability impact and is difficult to take into consideration of the its availability model of the problem, to the shipboard communication radio radiation interference cancellation in equipment as the object, adopts the spare key expert scoring method, one of the key spare parts as spare parts configuration optimization constraints, based on cost of spare parts, spare parts, spare parts volume subject to constraints of key spare parts configuration optimization model.