Matches 1 - 48 out of 48
Match Document Document Title
7432715 Method and apparatus for metal detection employing digital signal processing  
A metal detector employing digital means for the generation of highly quality reference signals used for transmission and demodulation and capable of continuously monitoring the parameters of the...
7397417 Electromagnetic impulse survey apparatus and method utilizing a magnetic component electromagnetic antenna  
The invention relates to an apparatus and method for performing passive geophysical prospecting. More particularly, the present invention relates to an improved apparatus and method for locating...
7397111 Semiconductor wafer, an electronic component, and a component carrier for producing the electronic component  
An electronic component includes a semiconductor chip with a chip topside, an integrated circuit, and a chip backside. The chip backside includes a magnetic layer. The electronic component further...
7375529 Induction magnetometer  
An array of induction magnetometers for use in airborne transient electromagnetic (ATEM) geophysical exploration is disclosed, having similar weight and external dimensions of prior art induction...
7365544 Methods of adjusting airborne geophysical measurements based on mapping instrument measurements  
This invention concerns a method of making airborne geophysical measurements. Such measurements may be made from fixed or moving wing airplanes or dirigibles. The method comprises the following...
7266406 Magnetic resonance apparatus  
In a magnetic resonance apparatus, the transmission coil for generating the radiofrequency excitation field is stationarily arranged. The geometry of the transmission coil is permanently...
7262601 Aircraft equipped for airborne vector magnetic exploration surveys  
An aircraft equipped for airborne vector magnetic exploration surveys comprising three magnetometers orthogonally mounted to measure the components of the earth's vector magnetic field; two...
7031839 Multi-frequency focusing for MWD resistivity tools  
An induction logging tool is used on a MWD bottom hole assembly. Due to the finite, nonzero, conductivity of the mandrel, conventional multi frequency focusing (MFF) does not work. A correction is...
6954698 System and method for surveying underground density distributions  
A method for geographical surveying includes the steps of determining an observation grid comprising observation points above a solution volume in the ground; making gravitational measurements at...
6876202 System, method and computer product geological surveying utilizing natural electromagnetic fields  
A system, computer product and method for generating geophysical data is provided. At least one airborne sensor unit is provided which measures low frequency natural electromagnetic fields....
6870370 Electromagnetic induction detection system  
A airborne electromagnetic induction (EMI) detection apparatus and system. In accordance with one embodiment, the EMI detection apparatus includes a transmitter element in the form of a transmitter...
6845936 Stable heli-borne vector platform for performing geophysical measurements  
A stable heli-borne vector platform capable of accepting a range of different sensors or instruments, particularly, but not exclusively, for the mapping and exploration of mountainous regions is...
6765383 Magnetotelluric geophysical survey system using an airborne survey bird  
A magnetotelluric geophysical survey system used with an airborne survey bird for natural resource exploration of oil and gas, mineral deposits and aquifers. The survey system uses natural...
6718278 Location system  
A location system for objects having location devices ( 16 ) as a means for repeatedly interrogating the location devices on each object to provide position signals. A means ( 18 ) to detect the...
6707301 External magnetic field measuring method, static magnetic field correcting method, external magnetic field measuring apparatus, and MRI system  
In order to nullify the adverse effect of an external magnetic field on a static magnetic field generated in an MRI system, small-size coils are used to generate a compensation magnetic field....
6546344 Magnetic anomaly sensor system  
The present invention is directed to a method and apparatus for measuring a magnetic field and determining whether an anomaly is present based on the magnetic field measurement and a measured...
6483309 Power frequency magnetic field (PF-MF) detection systems and operating methods therefor  
The present invention provides a power frequency, i.e., time-varying, magnetic field (PF-NF) detector system for characterizing the operational condition of a remote facility responsive to...
6369573 Apparatus for reducing rotation of a towed airborne article  
An apparatus for reducing rotation of an article such as a bird for holding a superconducting quantum interference device for use in airborne transient electromagnetic mineral prospecting. The...
6311128 Combined navigation and mobile communication satellite architecture  
A navigation and mobile communication satellite system including a Geo-Mobile (GEM) satellite (14) and a plurality of Global Position System (GPS) satellites (50). The GEM satellite (14) is in...
6255825 Method and apparatus for detecting, locating and resolving buried pipelines, cased wells and other ferrous objects  
A method and apparatus are provided for surveying a given region for the presence of ferromagnetic items and other sources of magnetic field disturbance on or under the ground, such as pipelines...
6244534 Airborne electromagnetic system  
A towed aircraft for use in an airborne electromagnetic geophysical prospecting system which includes a transmitting antenna and power generating means for powering the antenna. A bird to which is...
4904940 Fiber-optic multicomponent magnetic field gradiometer for first, second and higher order derivatives  
A fiber-optic magnetic field gradiometer uses a plurality of magnetic transducers to simultaneously determine multicomponents of the gradient and field strength of an external magnetic field so as...
4814711 Survey system and method for real time collection and processing of geophysicals data using signals from a global positioning satellite network  
A real time geophysical survey system and method. The system comprises a base station, one or more data acquisition vehicles, and a global positioning satellite network. The base station is...
4686474 Survey system for collection and real time processing of geophysical data  
A real time geophysical survey system and method. The system comprises a base station, one or more data acquisition vehicles, and one or more fixed reference stations. The base station is provided...
4590425 Magnetic detector apparatus with excitation conductors connected in series via sensor housing  
Magnetic detector apparatus comprises a pair of electrically matched magnetic sensor assemblies supported at opposite ends of a titanium sensor tube of significant length. The sensor tube is...
4570122 Magnetic exploration with reduction of magnetic data to the equator  
A method of reducing magnetic data recorded at latitudes close to the magnetic equator to the equator is disclosed. The result corrects magnetic field anomalies recorded with respect to geologic...
4539522 Magnetic detector apparatus with liquid-supported, conductive, sensor-support tube  
Magnetic detector apparatus comprises a pair of electrically matched magnetic sensor assemblies supported at opposite ends of a titanium sensor tube of significant length. The sensor tube is...
4435981 Airborne gravity surveying  
Method and apparatus are disclosed for airborne gravity surveying in which the airborne vehicle is stabilized with respect to speed, direction of heading and altitude, and in which the gravity...
4309659 Method for detecting a magnetic source by measuring the magnetic field thereabout  
A pair of magnetometer units symmetrically displaced from a reference measuring point along one axis and at least one magnetometer unit displaced from the reference point along a second axis...
4228395 Feature recognition system  
An airborne system for automatically and electronically recognizing and dcting the relative presence of invariant features of a transient submarine signal occurring in the presence of signal-like...
3976937 Method and apparatus for recording position of sensor in airborne magnetic surveying  
A method and apparatus for recording the position of a sensor to reduce turbulence errors in airborne magnetic surveying includes, in one embodiment a camera mounted on a gyrostabilized platform to...
3829768 SUPERCONDUCTING GRADIOMETER FOR MEASURING FIRST AND SECOND DERIVATIVES OF A MAGNETIC FIELD  
The first and second derivatives of a magnetic field are measured by two rs of spaced superconducting sensing coils which are aligned along a common axis with the individual coils of each pair...
3808519 METHOD AND DEVICE FOR DETERMINING THE DEPTH OF A MAGNETIC ANOMALY  
This invention is concerned with a method and a device for determining the depth of a magnetic anomaly at least approximately comparable with a horizontal dipole. A particular use of the invention...
3757203 MAGNETOMETER FOR DETECTION AND IDENTIFICATION OF IMMERSED BODIES  
A device for use with a differential magnetometer which is carried or towed by an aircraft is intended to determine whether a signal indicates the presence of a wreck or sub marine. The device...
3737842 FEATURE RECOGNITION TECHNIQUES  
A feature recognition system for extracting transient signal information m a signal-like noise background by separating a time domain signal into a plurality of frequency-time domain signals by...
3731752 MAGNETIC DETECTION AND MAGNETOMETER SYSTEM THEREFOR  
A highly sensitive magnetometer, consisting of at least one pair of generally rectangular core elements having square hysteresis loops, for use in a guidance system for off-vertical drilling, is...
3663953 HELICOPTER CARRIED MAGNETOMETER ASSEMBLY COMPENSATED FOR THE PARASITIC FIELD OF THE HELICOPTER  
A magnetometer assembly for detection of ferromagnetic targets carried by a helicopter is compensated for the parasitic magnetic field generated by the helicopter. First and second magnetometer...
3604660 HELICOPTER SENSOR PLATFORM ASSEMBLY  
A plurality of load platforms which may carry sensing devices or counterbalance weight are carried externally of the cabin of a helicopter on a rigid frame which extends inside the helicopter...
3536992 METHOD FOR CONDUCTING GEOPHYSICAL SURVEYS UTILIZING INFRARED SCANNING SIMULTANEOUSLY WITH THE RECORDING OF GEOPHYSICAL VARIABLES  
3530375 AIRCRAFT MAGNETOMETER SYSTEM WITH MEANS TO COMPENSATE SAID SYSTEM FOR DISTURBING MAGNETIC FIELD GENERATED BY THE AIRCRAFT  
3490032 METHOD AND APPARATUS UTILIZING A PAIR OF SPACED MAGNETOMETERS FOR MAKING MAGNETIC SURVEYS  
3431495 COMMUNICATION BETWEEN SUBMARINE AND AIRCRAFT  
3418568 Geophysical gradiometer including means for determining distance between airborne bodies  
3263161 Method for determining depth and falloff rate of subterranean magnetic disturbances utilizing a plurality of magnetometers  
3023359 Method and apparatus for making high resolution function earth's magnetic field maps  
2891216 Compensator for magnetic detection equipment  
2785215 Electronic timing circuit  
2779914 Magnetic exploration apparatus  
Matches 1 - 48 out of 48