GB777402A - Electromagnetic survey apparatus - Google Patents
Electromagnetic survey apparatusInfo
- Publication number
- GB777402A GB777402A GB17807/55A GB1780755A GB777402A GB 777402 A GB777402 A GB 777402A GB 17807/55 A GB17807/55 A GB 17807/55A GB 1780755 A GB1780755 A GB 1780755A GB 777402 A GB777402 A GB 777402A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- coil
- bird
- picked
- geophysical surveying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
- G01V3/165—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
777,402. Geophysical surveying. CANADIAN AIRBORNE GEOPHYSICS, Ltd. June 20, 1955 [July 30, 1954], No. 17807/55. Class 37. In geophysical surveying apparatus of the type in which an alternating field produced by a coil 2 induces in ore deposits eddy currents the effect of which is picked up by a coil 4, the direct effect of coil 2 on coil 4 is neutralized by means of a circuit 3, 5. As shown, coil 4 is tuned and the signal picked up is amplified and resolved in known manner into its in-phase and quadrature components which are separately recorded. Alternatively the pick-up may be measured by a null method with the aid of calibrated attenuators for the respective components. When coils 2, 3 and 4 are carried in a bird towed by an aircraft, errors due to changes in the relative position of the coils in flight are minimized by securing the coils to an elongated support 13 which is attached to the bird at two points 14, 15 between the coils. By this means the tendency of the support 13 to bend in response to accelerators applied by the towing cable is counteracted by the inertia of the coils &c. at its ends.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA777402X | 1954-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB777402A true GB777402A (en) | 1957-06-19 |
Family
ID=4172438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17807/55A Expired GB777402A (en) | 1954-07-30 | 1955-06-20 | Electromagnetic survey apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB777402A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3281662A (en) * | 1964-01-29 | 1966-10-25 | Richard W Kuberry | Air-cooled towed magnetometer sensor |
| DE1623382B1 (en) * | 1966-02-04 | 1971-12-23 | Commissariat Energie Atomique | DEVICE AND ARRANGEMENT FOR COMPENSATION OF OWN MAGNETIC INTERFERENCE FIELDS FOR A MAGNETOMETER CARRIED BY A VEHICLE |
| GB2173903A (en) * | 1985-04-18 | 1986-10-22 | Shell Int Research | A method and system for primary field compensation in a towed receiver for airborne electromagnetic survey systems |
| WO1991010923A1 (en) * | 1990-01-16 | 1991-07-25 | Tesla-10 Pty. Ltd. | Connector for trailing instrumentation |
| CN116014656A (en) * | 2023-03-23 | 2023-04-25 | 国网山西省电力公司电力科学研究院 | A transmission line deicing device and method based on UAV control |
-
1955
- 1955-06-20 GB GB17807/55A patent/GB777402A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3281662A (en) * | 1964-01-29 | 1966-10-25 | Richard W Kuberry | Air-cooled towed magnetometer sensor |
| DE1623382B1 (en) * | 1966-02-04 | 1971-12-23 | Commissariat Energie Atomique | DEVICE AND ARRANGEMENT FOR COMPENSATION OF OWN MAGNETIC INTERFERENCE FIELDS FOR A MAGNETOMETER CARRIED BY A VEHICLE |
| GB2173903A (en) * | 1985-04-18 | 1986-10-22 | Shell Int Research | A method and system for primary field compensation in a towed receiver for airborne electromagnetic survey systems |
| WO1991010923A1 (en) * | 1990-01-16 | 1991-07-25 | Tesla-10 Pty. Ltd. | Connector for trailing instrumentation |
| CN116014656A (en) * | 2023-03-23 | 2023-04-25 | 国网山西省电力公司电力科学研究院 | A transmission line deicing device and method based on UAV control |
| CN116014656B (en) * | 2023-03-23 | 2023-09-08 | 国网山西省电力公司电力科学研究院 | Unmanned aerial vehicle control-based power transmission line deicing device and method |
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