ID 原文 译文
563 在接收端,将信号经匹配滤波器解调,然后通过滑动平均滤波器降噪,并进行相关解调。 At the receiver, the signal is demodulatedby a matched filter, then the signal is averaged by a moving average filter to suppress the noise anddemodulated by correlation.
564 推导了系统在加性高斯白噪声(AWGN)信道和多径Rayleigh衰落信道中的BER公式并进行了仿真分析,结果表明系统的BER性能优于众多多载波混沌通信系统,数据传输速率也相较CDSK系统有明显提升,为该系统在实际通信系统中的应用提供了理论依据,并显示了较强的应用价值。 The BER formula of the system in Additive White Gaussian Noise (AWGN)channel and multipath Rayleigh fading channel are derived and simulated. The results show that the BERperformance of the system is better than that of many multi-carrier chaotic communication systems and thedata transmission rate is improved obviously compared with CDSK system. Theoretical basis for the futureapplication of the system to practical communication systems is provided in the paper and shows strongfeasibilities in future engineering application.
565 间歇采样转发干扰(ISRJ)是基于欠采样原理的新型雷达相干干扰技术,能够形成密集假目标干扰。 Interrupted-Sampling Repeater Jamming (ISRJ) is an advanced radar coherent interference based onthe principle of under-sampling method, and achieves a train of false targets.
566 该文针对抗间歇采样转发干扰问题,提出一种雷达发射波形和非匹配滤波联合设计的抗干扰方法。 In this paper, a joint transmittedwaveform and mismatched filter design method focus on suppressing the ISRJ is proposed.
567 首先,以发射信号脉冲压缩积分旁瓣能量和干扰信号非匹配滤波输出积分能量为目标函数,综合考虑发射信号的幅度约束,建立了间歇采样转发干扰抑制的数学优化模型。 Firstly, themathematical optimization model is established by minimizing the transmitted signal pulse compressionintegrated sidelobe level and jamming signal mismatched filter output integrated level under the constraint ofconstant modulus waveform.
568 然后,通过问题分解推导了雷达发射波形和非匹配滤波器的解析表达式,基于迭代算法设计了发射波形和非匹配滤波器。 Secondly, the analytical solution of transmitted waveform and mismatched filter isobtained by simplifing the optimization problem. By utilizing cyclic iterative algorithm, unimodular waveformand mismatched filter are produced.
569 最后,通过仿真实验的方式验证了发射波形和非匹配滤波器的性能、抗间歇采样转发干扰性能以及所提方法的间歇采样转发干扰抑制能力。 Finally, simulations are presented to assess the waveform and filterperformance and anti-ISRJ performance. Simulation results demonstrated that the ISRJ is suppressed byjointly designing the waveform and filter.
570 针对雷达与电子支援措施(ESM)存在系统误差、航迹异步等复杂条件下的航迹关联问题,该文提出一种基于区间序列离散度的异步抗差航迹关联算法。 To address track association problem of radar and Electronic Support Measurements (ESM) undercomplex conditions such as system biases and asynchronous track, an asynchronous anti-bias track associationalgorithm based on discrete degree of interval sequence is proposed.
571 定义混合区间序列的离散信息度量,给出系统误差的区间化方法,通过计算区间离散度并利用经典分配法进行关联判定。 The discrete information measurement ofmixed interval sequence is defined and the interval method of system biases is given.
572 与传统算法相比,可在系统误差存在的前提下无需时域配准对异步航迹直接关联,且对噪声分布不敏感。 The associationdetermination is performed by calculating the interval discrete degree and using classical assignment method.Compared with the traditional algorithm, the asynchronous track can be directly correlated without time-domain registration in the presence of system errors and it is not sensitive to noise distribution.