ID 原文 译文
20775 磁异常检测(MAD)是一种应用广泛的被动式目标检测方法，其应用包括水面舰船目标监测、水下移动目标及陆地目标的检测与识别等领域。 Magnetic Anomaly Detection (MAD) is a widely used passive target detection method. Its applications include surface warship target monitoring, underwater moving targets, and land target detection and identification.
20776 基于地磁背景下弱磁异常信号的可靠性检测方法研究具有重要的意义，该文在研究地磁背景与磁异常信号分形特征差异的基础上，提出一种基于目标磁异常信号分形特征的单传感器检测方法，并进行实际外场试验验证。 It is of great significance to research on the reliability detection method of weak magneticanomaly signals based on geomagnetic background. This paper proposes a single sensor detection method based on the fractal characteristics of target magnetic anomaly signal based on the study of the differences in geomagnetic background and fractal characteristics of magnetic anomaly signals and conducts actual field test verification.
20777 试验结果表明：该方法能准确分辨出地磁背景干扰与磁异常信号，并可以在地磁背景噪声中实现弱磁异常信号的检测。 The experimental results show that the method can accurately distinguish the geomagnetic background interference and magnetic anomaly signals, and can detect the weak magnetic anomaly signals in the geomagnetic background noise.
20778 非相干散射谱对电离层各物理参数的研究具有至关重要的作用。 Incoherent scatter spectrum plays an important role in studying the physical parameters of the ionosphere.
20779 现有非相干散射谱模型推导和计算较为复杂，且无法给出相应的自相关函数模型。 The conventional theoretical model of incoherent scatter spectrum for derivation and calculation is extremely complicated and the model of the autocorrelation function can not be obtained .
20780 该文重新推导了电离层非相干谱的简化模型，并提出相应的自相关函数模型。 In this paper, the simplified model of ionospheric incoherent scatter spectrum is re-derived and the corresponding autocorrelation function is proposed.
20781 在此基础上，针对非相干散射信号处理中零时延处距离模糊大、分辨率较低，导致自相关函数在不同时延处均衡性较差，影响电离层散射谱估计性能的问题，提出使用自相关函数模型估计零时延自相关值的数据拟合方法。 In the procedure of traditional incoherent scattering radar signal processing, the autocorrelation function is imbalance at different delays. This is mainly because the range resolution of zero-lagis very low, which affects the estimated performance of ionospheric scatter spectrum. Focus on this problem, a method based on data fitting is proposed to estimate the autocorrelation at zero-lag.
20782 考虑到计算复杂度，提出利用多项式函数逼近自相关函数模型的快速实现方法。 Considering the computational complexity, a fast implementation method by polynomial functions is proposed to approach the autocorrelation function.
20783 最后，通过对实测回波数据处理结果的对比分析，证明了该方法的可行性，对提高电离层探测精度具有重要意义。 Finally, experimental results on real echo data demonstrate the correctness and efficiency of the proposed method, which is of great significance for ionospheric detection.
20784 传统多用户差分混沌键控主要缺点是误码率差，该文提出一种多用户降噪差分混沌键控(MU-NRDCSK)通信方案。 One of the major drawbacks of the conventional Multiuser Differential Chaos Shift Keying is the poorBit Error Rate (BER), a MultiUser Noise Reduction Differential Chaos Shift Keying (MU-NRDCSK) system is proposed.