公开(公告)号：US06343534B1

公开(公告)日：2002-02-05

申请号：US09414062

申请日：1999-10-07

申请人： Shyam M. Khanna ,  Francois Paquet ,  Rene G. Apps ,  Joseph S. Seregelyi

发明人： Shyam M. Khanna ,  Francois Paquet ,  Rene G. Apps ,  Joseph S. Seregelyi

IPC分类号： F41F304

CPC分类号： F41H11/12 ,  F41H11/16

摘要： A hybrid remote-sensing apparatus is based on an active high-power microwave (HPM) illuminator and a passive infrared (IR) detector for the detection of shallow buried landmines. A 2.45 GHz, 5 kW microwave source is used for illumination and the thermal signature at the soil surface is detected in the 8-12 &mgr;m region both in near real-time as well as after a brief time-delay following illumination. The thermal signature at the soil surface is primarily made up of two components. A thermal signature occurs at the soil surface in near real-time due to the interference of the incident beam and the beam reflected by buried mines. A second thermal signature is generated when temperature contrasts due to differential microwave absorption by a mine and the surrounding soil are conducted upwards from that mine location to the surface. Both signatures are dependent on the complex dielectric constants of mines and the soil. These signatures can be used to determine the location of different types of metallic and non-metallic mine surrogates, dummy mines without explosives and live mines with explosives.

摘要翻译： 混合遥感装置基于主动大功率微波（HPM）照明器和用于检测浅埋地雷的被动红外（IR）探测器。 采用2.45 GHz，5 kW的微波源进行照明，并在8-12 mum区域内几乎实时地以及经过短暂的延时照明之后检测到土壤表面的热特征。 土壤表面的热特征主要由两部分构成。 由于入射光束和埋藏的地雷反射的光束的干扰，近地实时地发生了热分布特征。 当由于矿井的微波吸收不同而导致温度对比时，产生第二个热特征，周围的土壤从该矿位置向上传导到地面。 两个签名都取决于矿山和土壤的复杂介电常数。 这些签名可用于确定不同类型的金属和非金属矿用替代物的位置，无爆炸物的虚拟矿井和带爆炸物的活煤矿。

公开(公告)号：US4135127A

公开(公告)日：1979-01-16

申请号：US782462

申请日：1977-03-29

申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher ,  Shyam M. Khanna ,  Eugene W. Urban

发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher ,  Shyam M. Khanna ,  Eugene W. Urban

IPC分类号： H01F27/28 ,  H01F36/00 ,  H01F38/40 ,  G05F7/00

CPC分类号： H01F27/2804 ,  H01F36/00 ,  H01F38/40 ,  Y02E40/66 ,  Y10S336/01 ,  Y10S505/87

摘要： A direct current transformer in which the primary consists of an elongated strip of superconductive material, across the ends of which is applied a direct current potential. Parallel and closely spaced to the primary is positioned a transformer secondary consisting of a thin strip of magnetoresistive material.

摘要翻译： 一种直流变压器，其中初级由超导材料的细长带组成，跨越其端部施加直流电势。 平行并且与主要部分紧密地间隔开一个由薄磁带材料薄带组成的变压器次级。