ID |
原文 |
译文 |
14065 |
导弹武器的制导工具误差分离与折合是命中精度评估的重要研究内容。 |
Error separation and conversion of the missile weapon's guidance tools are important research contents of hit accuracy evaluation. |
14066 |
首先结合捷联惯性导航系统的工作原理,提出利用实数遗传算法实现误差分离与折合,并给出具体实施步骤。 |
Firstly‚by adopting the working principle of Strapdown Inertial Navigation System(SINS)‚a real number genetic algorithm is proposed to realize error separation and conversion‚and specific implementation steps are given. |
14067 |
而后针对遗传算法在解决误差分离问题时寻优慢、易陷入局部最优等问题,利用相应策略对遗传算法进行改进,设置交叉概率和变异概率的调节机制,同时利用精英保留策略,有效提升了误差分离及弹道折合的精度。 |
Then‚in order to solve the problems of slow optimization and easily falling into local optimum during error separation‚the corresponding strategy is used to improve the genetic algorithm‚the mechanism for adjustment of cross probability and mutation probability is set up‚and the elite retention strategy is used to effectively improve the accuracy of error separation and ballistic conversion. |
14068 |
最后利用某仿真弹道进行验证,结果表明,与传统遗传算法相比,改进遗传算法的收敛速度更快,分离精度更高,折合至全程弹道所得的遥外测速度差更接近真值。 |
Finally‚a simulated trajectory is used to verify the method.The results show that‚compared with the traditional genetic algorithm‚the improved genetic algorithm has faster convergence and higher separation accuracy‚and the velocity difference between telemeasuring data and measurement data converted to the full trajectory is closer to the true value. |
14069 |
为了满足侦察雷达接收机对正弦信号频率实时估计的要求,提出了一种利用近似核和近似取模方法改进的Rife算法。 |
In order to meet the requirement of real-time estimation of the frequency of sinusoidal signals for the receiver of the reconnaissance radar‚an improved Rife algorithm based on the approximate kernel and the approximate modulus method is proposed. |
14070 |
该算法利用4点近似核FFT代替全精度FFT,消除了乘法运算;利用近似取模算法避免了乘法运算和开方运算,整体上使运算量大幅下降。 |
This algorithm uses a 4-point approximate kernel Fast Fourier Transform(FFT) instead of full-precision FFT to eliminate multiplication operations‚then uses an approximate modulus method to avoid multiplication operation and root extraction operation‚which can reduce the calculation amount to a great extent. |
14071 |
仿真结果显示,该算法保持了全频段高精度测频特性,均方根误差与克拉美罗下界(CRLB)保持较近距离。 |
The simulation results show that the algorithm maintains the characteristics of high-precision frequency measurement in the full frequency band‚and the Root Mean Square Error(RMSE) is close to the Cramer-Rao Lower Bound(CRLB). |
14072 |
即使在信噪比为-7 dB的情况下,仍可保持频率估计均方根误差平均值为53.75 kHz;当信噪比为10 dB时,频率估计均方根误差平均值仅为7.58 kHz。 |
Even in the case that the Signal to Noise Ratio(SNR) is-7 dB‚the mean value of RMSE of frequency estimation is 53.75 kHz;in the case that the SNR is 10 dB‚the mean value of RMSE of frequency estimation is only 7.58 kHz. |
14073 |
通过计算量分析对比可知,改进的Rife算法复数乘法运算量约为I-Rife算法的44%,计算量大幅下降,可满足硬件实现实时处理的需求。 |
According to the analysis‚the calculation amount of complex multiplication operation of the improved Rife algorithm is about 44% of that of the I-Rife algorithm.The calculation amount is greatly reduced‚which can meet the requirements of real-time processing of the hardware. |
14074 |
针对复杂障碍环境下的多机协同侦察任务规划问题开展研究。 |
This paper focuses on mission planning of cooperative reconnaissance for multiple UAVs in complex environment with obstacles. |