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EQUIPMENT FOR COMPENSATION OF VARIATIONS OF THE EARTH’S MAGNETIC FIELD
Boris V. Hlopov, JSC «CNIRTI named after academician A.I. Berg», Russian Federation, Moscow, Russia, hlopovu@yandex.ru
Grigory I. Andreev, JSC «CNIRTI named after academician A.I. Berg», Russian Federation, Moscow, Russia
Nikolai P. Kolesnikov, Deputy General Director, JSC «CNIRTI named after academician A.I. Berg», Moscow, Russia,
Valeria S. Samoylova, JSC Central Research Radio Engineering Institute of the Academician A.I. Berg, Moscow, Russia, samvalser@yandex.ru
Vasily D. Shashurin, MGTU of N.E. Bauman, Moscow, Russia, shashurin@bmstu.ru
Sergey A. Meshkov, MGTU of N.E. Bauman, Moscow, Russia, sb67241@mail.ru
Abstract
The article shows the possibility of detecting anomalies of electromagnetic fields created by industrial and special objects, as well as samples of special equipment hidden on the earth’s surface or underground. It is shown that this problem is solved when creating an on-Board detector equipped with highly sensitive measuring magnetometric means. If an abnormal change in the magnetic field on Earth is detected with variations in the magnetic field or electromagnetic radiation, it is necessary to measure the variations and take into account the variations in the Earth’s magnetic field when obtaining the electrical parameters of the object. The article discusses some domestic and foreign methods of searching and detecting underwater and surface objects using onboard magnetometric tools that allow you to conduct a survey of the designated search area for an underwater or ground object. The information considered in the article from a foreign source confirmed the correctness of the chosen direction of research and development of the process of detecting objects hidden in the area with higher accuracy. Comparative characteristics of magnetic detectors used by foreign armies, which are effectively used in the conditions of counteraction to hydroacoustic means of reconnaissance, as well as ground samples of modern magnetic detectors used by foreign armies, which have a sensitivity of no more than 0.1 nTl, which allows distinguishing samples of military equipment at a distance of up to 50 m. The detector considered in the article, placed on an aircraft, with the ability to measure and compensate for variations in magnetic fields, provides detection of reflected signals from radiation objects, measurement of technical characteristics of signals, registration of the magnetic field on the earth’s surface and in the atmosphere. To avoid interference in the path of propagation of radio waves from the detector transmitter to the radiation object and back, taking into account the variation of The earth’s magnetic field, the detector uses an antenna device with a sharp decrease in the level of the side lobes of the signal spectrum. In the antenna device, the developers placed a solenoid with a magnetic opal matrix made of nano-composite multiferroid material at the bottom of the resonator [5-8]. To control and irradiate the nanocomposite, a solenoid with a flat spiral magnetic field-forming system [1] is proposed, which increases the integral electromagnetic susceptibility while reducing the shielding effects. The obtained experimental dependences of the magnetic susceptibility of nano-composite multiferroid material placed in the detector antenna device confirm the correctness of the decision to detect an object on earth with variations in the magnetic field or electromagnetic radiation, which must be taken into account when obtaining the parameters of the object when the earth’s magnetic field changes, as well as the influence of atmospheric influence, and make the necessary corrections when performing calculations to clarify the object’s location.
Keywords: magnetic detector, magnetometer, magnetic field variations, aircraft, metamaterials, composite material.
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