公开(公告)号：US20070035304A1

公开(公告)日：2007-02-15

申请号：US11405602

申请日：2006-04-17

申请人： Larry Stolarczyk ,  Tito Sanchez ,  John Myers ,  Chance Valentine ,  Gerald Stolarczyk ,  Robert Troublefield ,  Igor Bausov ,  Laxmi Botla ,  Beaux Beard ,  Richard Main

发明人： Larry Stolarczyk ,  Tito Sanchez ,  John Myers ,  Chance Valentine ,  Gerald Stolarczyk ,  Robert Troublefield ,  Igor Bausov ,  Laxmi Botla ,  Beaux Beard ,  Richard Main

IPC分类号： G01V3/16

CPC分类号： G01V3/17

摘要： An aerial electronic system for detection of surface and underground threats comprises an electromagnetic (EM) gradiometer flown aloft over the possible ground and underground threats to a convoy. The EM gradiometer is disposed in a Styrofoam torpedo shaped pod that is towed in flight behind an airplane. An illumination transmitter and loop antenna mounted to the airplane radiate a primary EM wave that travels down to the ground surface and penetrates beneath. Frequencies of 80 KHz to 1 MHz are selected according to whether the targets are laying on the surface or deeply buried. Detonation wire pairs, buried cables and pipes, and other conductors will re-radiate a secondary wave that can be sensed by the EM gradiometer. A reference sample of the transmitter signal is carried down a fiberoptic from the airplane to the towed pod. This signal is used in the synchronous detection to measure the secondary EM wave phase.

摘要翻译： 用于检测地面和地下威胁的航空电子系统包括一个电磁（EM）梯度计，可以在可能的地面和地面对车队的威胁中高空飞行。 EM梯度仪被放置在飞机后面被拖曳在发泡胶的鱼雷形状的荚上。 安装在飞机上的照明发射器和环形天线辐射下降到地面并穿透下面的初级EM波。 根据目标是放置在表面上还是深埋，选择80KHz至1MHz的频率。 爆炸线对，埋地电缆和管道以及其他导线将会重新辐射可由EM梯度计感测的次级波。 发射机信号的参考样本从飞机被传送到拖曳的荚。 该信号用于同步检测以测量二次EM波相位。