极化-空域联合抗机载雷达欺骗式主瓣干扰

机载雷达欺骗式主瓣干扰不仅会引起大量虚警,还会污染空时自适应处理(STAP)器的训练样本,引起自适应方向图畸变,导致期望信号相消和杂波抑制性能下降。针对此问题,利用目标信号与干扰信号极化特性的差异,该文提出一种极化-空域联合自适应波束形成的方法来抑制欺骗式主瓣干扰。该方法首先在多普勒清晰区挑选干扰样本,并采用特征融合技术估计干扰协方差矩阵,然后采用重叠滑窗的子阵合成方式进行极化-空域联合自适应波束形成,在抑制主瓣干扰的同时为后续杂波抑制保留了空域自由度,最后通过STAP抑制剩余的杂波。该算法可以有效滤除密集欺骗式干扰,减少由其引起的虚警,改善机载STAP雷达的杂波抑制性能。仿真结果验证了该方法的有效性。     

一种基于粗集的欺诈风险分析方法

文章利用粗集理论中的特征属性约简方法来分析和研究欺诈风险,提出了一种基于粗集的欺诈风险分析方法,并通过一个信用卡欺诈的分析实例对该算法进行了检验。实验结果表明,在保证分类质量基本不变的情况下,该算法是有效的,它能找出引发欺诈行为的主要特征属性,帮助管理者及时、准确地预测各种可能发生的欺诈风险。     

Vulnerability of Older Adults to Deception in Prison and Nonprison Contexts.

Media reports frequently depict older adults as victims of deception. The public perceives these stories as particularly salient because older adults are seen as fragile victims taken advantage of because of trusting behaviors. This developmental investigation of deception detection examines older and younger adults interacting in 2 contexts, prison and the "free world," to discover whether older adults are vulnerable to deception. Younger prisoners were found to be lie biased. Older adults were better able to discriminate lies than younger adults, and this effect was localized primarily to older female adults. Findings indicate that discriminability strongly increases from younger to older age for women, whereas men do not show an improvement, as age increases, in making decisions about statement veracity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

PD雷达欺骗干扰方法浅析

概要介绍了PD雷达的抗干扰性能及其特点．并主要对PD雷达的欺骗干扰方法进行了一定的讨论。     

用数控移相器实现对脉冲多普勒雷达的干扰

脉冲多普勒雷达是一种新型体制雷达,其发展基础源于动目标显示雷达。过去,对脉冲多普勒雷达进行干扰的器件是行波管,在其螺线极与地之间加锯齿波信号实现载频移频,加噪声信号实现噪声调相,这种方法存在诸多弊端。随着数字技术的快速发展,数控移相器具备小体积、高速度、低输入、易控制等优点,而这些特点正是行波管所欠缺的。故采用数控移相...     

对GPS接收机实施欺骗式干扰的定位误差研究

本文介绍了一种对GPS接收机实施欺骗式干扰的定位误差研究方法,并在伪距测量定位模型的基础上,建立了转发式欺骗干扰的数学模型。通过分析和计算定位误差的标准差,得出欺骗式干扰时的GDOP值。模拟试验结果初步验证了评估方法的合理性。     

Methodological issues in meta-analyzing standard deviations: Comment on Bond and DePaulo (2008).

In this comment on C. F. Bond and B. M. DePaulo (see record 2008-08177-001), the authors raise methodological concerns about the approach used to analyze the data. The authors suggest further refinement of the procedures used, and they compare the approach taken by Bond and DePaulo with standard methods for meta-analysis. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Use of Deception.

Comments on "Deception in psychological research" by J. Seeman (see record 1970-07542-001). Certainly, a number of legitimate arguments exist for the reduction and/or elimination of deception in psychological experimentation. However, employed by an ethical scientist, the use of deceit in psychological experimentation can meaningfully contribute to the accumulation of "wisdom" Seeman cherishes so. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

无人机多假目标欺骗式干扰效能研究

无人机多假目标干扰是一种重要的欺骗干扰样式。分析了无人机多假目标干扰效果的评估指标,建立了多假目标数量计算和标准化模型,最后利用单目标突防被击中模型和突防成功目标数模型对无人机多假目标在不同干扰距离下的干扰效果进行了定量分析,并用仿真计算加以验证。     

浅析GPS干扰技术

介绍了导航战中的GPS干扰技术,针对GPS干扰技术的特点,阐述了GPS信号的侦测,GPS干扰技术体制,建立GPS分布式、立体干扰系统。