末端为任意形状有限金属法兰盘的介质填充波导的辐射

本文介绍的是一种基于矩量法（MOM）技术的诊断和设计工具，用于分析介质填充并装有限尺寸和任意形状金属法兰盘的孔径的辐射，这种方法可以处理具有任意几何形状的的孔径问题，因而是一种非常有效的改进天线设计的工具，利用等效原理，推导了一个等效问题并且当设置适当的的边界条件时，可以利用波导上表面电流作为未知量获得一组积分方程式，通过MOM可以解这些积分方程式并获得表面电流，进而计算出辐射方向图，通过对天线性能的仿真和实例（方向图和驻波比（SWR）比较，证明了该软件的有效性。     

通过聚集探测SAR图像中的动目标

本文介绍的是一种在合成孔径雷达（SAR）图像中探测动目标的方法。这种方法是将SAR复图像分成若干分区，分别对各个分区进行聚焦，然后测量聚焦区域中锐度的增长情况，这种方法能敏锐地检测到目标的方位速度，对目标径向加速度的检测尤为敏锐，还能对任意方向的运动进行检测，对于只能检测快速运动目标径向速度的传统多普勒传感动目标指示器而言，这种方法是一种有效的补充。     

近场合成孔径雷达处理器的快速算法

通过在被测频段上的对横向扫描范围内反向散射场的相参积累，可构成一幅雷达图像。这种相参积累可看作是被测数据与聚焦函数的卷积，聚焦函数仅与测量系统的几何配置有关。因此，通过采用快速傅里叶变换技术（ＦＦＴ）计算傅氏域的积，就可以有效地重构目标图像。另外，如果室内合成孔径雷达（ＳＡＲ）测量的几何图形相同，则只须一次性地计算出聚焦算子便可在处理不同数据组时重复使用，从而大大缩短了计算时间。     

适应缉私任务的AN／APG—76多模雷达

ＡＮ／ＡＰＧ－７６多模雷达的设计和研制要求使其能在恶劣的气候条件下在远距离上为多模攻击机提供对机载和地面目标的快速搜索、探测、识别以及精确定位。这种雷达的独特性能是在生成所选择区域的ＳＡＲ图像的同时能探测和跟踪位于此成像区域内的高速运动目标。     

Sunspot dynamics are reflected in human physiology and pathophysiology

Periodic episodes of increased sunspot activity (solar electromagnetic storms) occur with 10-11 and 5-6 year periodicities and may be associated with measurable biological events. We investigated whether this sunspot periodicity characterized the incidence of Pap smear-determined cervical epithelial histopathologies and human physiologic functions. From January 1983 through December 2003, monthly averages were obtained for solar flux and sunspot numbers; six infectious, premalignant and malignant changes in the cervical epithelium from 1,182,421 consecutive, serially independent, screening Pap smears (59°9″N, 4°29″E); and six human physiologic functions of a healthy man (oral temperature, pulse, systolic and diastolic blood pressure, respiration, and peak expiratory flow), which were measured ～5 times daily during ～34,500 self-measurement sessions (44°56″N, 93°8″W). After determining that sunspot numbers and solar flux, which were not annually rhythmic, occurred with a prominent 10-year and a less-prominent 5.75-year periodicity during this 21-year study span, each biological data set was analyzed with the same curve-fitting procedures. All six annually rhythmic Pap smear-detected infectious, premalignant and malignant cervical epithelial pathologies showed strong 10-year and weaker 5.75-year cycles, as did all six self-measured, annually rhythmic, physiologic functions. The phases (maxima) for the six histopathologic findings and five of six physiologic measurements were very near, or within, the first two quarters following the 10-year solar maxima. These findings add to the growing evidence that solar magnetic storm periodicities are mirrored by cyclic phase-locked rhythms of similar period length or lengths in human physiology and pathophysiology.     

Biomarker and stable isotope characterization of coastal pond-derived organic matter, McMurdo Dry Valleys, Antarctica

Small coastal ponds that contain photosynthetic microbial mat communities represent an extreme environment where a potentially significant source of labile organic carbon can be found within the McMurdo Dry Valleys, Antarctica. To distinguish coastal pond-derived organic matter from other sources of organic matter in the Dry Valleys, bulk organic carbon, nitrogen, and sulfur isotope signatures and phospholipid fatty acid (PLFA) profiles of benthic microbial mats located at two sites--Hjorth Hill coast and Garwood Valley--were investigated. The average isotope values at Hjorth Hill coast and Garwood Valley are, respectively, -10.9 per thousand and -10.2 per thousand for delta(13) C, 3.7 per thousand and -1.3 per thousand for delta(15)N, and 8.1 per thousand and 16.7 per thousand for delta(34)S. Microbial mats from all ponds are dominated by monounsaturated PLFAs (indicative of Gram-negative bacteria) and polyunsaturated PLFAs (indicative of microeukaryotes). Biomarkers specific to aerobic prokaryotes, eukaryotes, and photoautotrophic microeukaryotes, as well as sulfur-reducing bacteria, are present in all samples. Benthic mats at Garwood Valley are thicker and more laminated, have a higher biomass, and have a greater carbon and nitrogen content, which suggests greater productivity than mats at Hjorth Hill coast. Greater productivity is supported, as well, by higher dissolved oxygen contents likely derived from heightened photosynthetic productivity. More productivity at Garwood Valley likely results from a larger influx of terrestrial surface waters together with a concomitant nutrient loading.     

提供脉冲相参跟踪的应答机设计

为了确保雷达系统的正常工作，跟踪应答机必须具有高的发射机输出功率和高的接收机灵敏度。一部使用高Ｑ因子磁控管、以注入锁定方式工作的Ｃ波段脉冲相参应答机系统，将提供４００Ｗ输出功率及－６０ｄＢｍ的灵敏度。     

用于RF发射机详细EMC建模的一种数字混合程序

本文介绍了一种用于射频接收机/发射机单元电磁兼容设计的数字混合程序。问题分析细分为3个部分，并采用了一种联合FDTD和辐射集成程序。     

用模拟神经网络解中脉冲重频雷达系统的模糊问题

中脉冲重频（ＰＲＦ）雷达综合了高ＰＲＦ和低ＰＲＦ雷达的优良性能，但存在着距离和多普勒（距离速率）两种模糊问题。本文介绍了用神经网络有效地解中ＰＲＦ雷达系统模糊问题的方法。为此设计了一种多层前馈网络。且给出了模拟结果和模拟电路实现。建立了一种便于模块化的理论。它将大量的存储模式分成若干模块，这就使得利用模拟神经芯片模糊是切实可行的。它将大量的存储模式分成若干模块，这就使得利用模拟神经芯片解模糊是切实