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公开(公告)号：US09348020B2
公开(公告)日：2016-05-24
申请号：US13797929
申请日：2013-03-12
CPC分类号： G01S13/0209 , G01S7/352 , G01S13/885
摘要： Systems and methods involve generating a baseband signal, up-converting the baseband signal to a radar signal frequency, filtering a lower sideband of the up-converted signal, and transmitting the filtered up-converted signal. Systems and methods also involve receiving a return signal, down-converting the return signal using a signal having a frequency offset from the up-converted signal, filtering the upper sideband of the down-converted return signal, and producing a baseband return signal.
摘要翻译： 系统和方法涉及生成基带信号，将基带信号上变频为雷达信号频率，对上变频信号的下边带进行滤波，以及发送滤波的上变频信号。 系统和方法还包括接收返回信号，使用具有从上变频信号的频率偏移的信号下变频返回信号，对下变频返回信号的上边带进行滤波，并产生基带返回信号。
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公开(公告)号：US20130234879A1
公开(公告)日：2013-09-12
申请号：US13797929
申请日：2013-03-12
CPC分类号： G01S13/0209 , G01S7/352 , G01S13/885
摘要： Systems and methods involve generating a baseband signal, up-converting the baseband signal to a radar signal frequency, filtering a lower sideband of the up-converted signal, and transmitting the filtered up-converted signal. Systems and methods also involve receiving a return signal, down-converting the return signal using a signal having a frequency offset from the up-converted signal, filtering the upper sideband of the down-converted return signal, and producing a baseband return signal.
摘要翻译： 系统和方法涉及生成基带信号，将基带信号上变频为雷达信号频率，对上变频信号的下边带进行滤波，以及发送滤波的上变频信号。 系统和方法还包括接收返回信号，使用具有从上变频信号的频率偏移的信号下变频返回信号，对下变频返回信号的上边带进行滤波，并产生基带返回信号。
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公开(公告)号：US20050061547A1
公开(公告)日：2005-03-24
申请号：US10919748
申请日：2004-08-17
摘要： An obstacle avoidance system for obstacle detection in an opaque material. The system includes at least one electromagnetic signal source adapted to produce an electromagnetic source signal suitable for transmission through the opaque material, at least one electromagnetic signal detector adapted to receive reflected electromagnetic energy signals from discontinuities in the opaque material encountered by the electromagnetic source signal, and a reflected electromagnetic energy signal processor suitable for determining a presence of obstructions and/or strata variations within the opaque material. The system is preferably integral with a head element suitable for traversing the opaque material, for example a subterranean drill bit.
摘要翻译： 在不透明材料中进行障碍物检测的障碍物回避系统。 该系统包括适于产生适于通过不透明材料传输的电磁源信号的至少一个电磁信号源，至少一个电磁信号检测器，适于从电磁源信号遇到的不透明材料的不连续部分接收反射的电磁能信号， 以及适用于确定不透明材料内的障碍物和/或层状变化的存在的反射电磁能量信号处理器。 该系统优选地与适于横穿不透明材料（例如地下钻头）的头部元件成一体。
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公开(公告)号：US07013991B2
公开(公告)日：2006-03-21
申请号：US10919748
申请日：2004-08-17
申请人： Alan Wilson-Langman , Michael R. Inggs , Leendert Johannes du Toit , Kirankumar M. Kothari , David R. Hanson
发明人： Alan Wilson-Langman , Michael R. Inggs , Leendert Johannes du Toit , Kirankumar M. Kothari , David R. Hanson
IPC分类号： E21B44/06
摘要： An obstacle avoidance system for obstacle detection in an opaque material. The system includes at least one electromagnetic signal source adapted to produce an electromagnetic source signal suitable for transmission through the opaque material, at least one electromagnetic signal detector adapted to receive reflected electromagnetic energy signals from discontinuities in the opaque material encountered by the electromagnetic source signal, and a reflected electromagnetic energy signal processor suitable for determining a presence of obstructions and/or strata variations within the opaque material. The system is preferably integral with a head element suitable for traversing the opaque material, for example a subterranean drill bit.
摘要翻译： 在不透明材料中进行障碍物检测的障碍物回避系统。 该系统包括适于产生适于通过不透明材料传输的电磁源信号的至少一个电磁信号源，至少一个电磁信号检测器，适于从电磁源信号遇到的不透明材料的不连续部分接收反射的电磁能信号， 以及适用于确定不透明材料内的障碍物和/或层状变化的存在的反射电磁能量信号处理器。 该系统优选地与适于横穿不透明材料（例如地下钻头）的头部元件成一体。
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