Analysis of modern gravimeters of the aviation gravimetric system

Безвесільна, Олена Миколаївна; Чепюк, Ларіна Олексіївна; Ткачук, Андрій Геннадійович; Нечай, Сергій; Khylchenko, Tetiana

doi:10.15587/2312-8372.2017.105698

Cited by 3 publications

(8 citation statements)

References 13 publications

(14 reference statements)

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“…In works [2][3][4][5][6][7], a new sensitive element of the measuring system is proposed -a transformer gravimeter, which makes it possible to obtain greater accuracy of measurements of the acceleration of gravity compared to [1].…”

Section: двоканальний балістичний трасформаторний гравіметрmentioning

confidence: 99%

“…But in the known literature [1][2][3][4][5][6][7][8][9][10][11] there are no proposals to ensure the accuracy of the ballistic transformer gravimeter by using the principle of two channels and additional necessary design components.…”

Section: двоканальний балістичний трасформаторний гравіметрmentioning

confidence: 99%

“…Comparative descriptions of various types of gravimeters (piezoelectric, string, MEMS capacitive, etc.) are given in [8][9][10][11]. However, in these publications, there are no proposals for improving the accuracy of the transformer gravimeter by using the two-channel principle and additional design components.…”

Section: двоканальний балістичний трасформаторний гравіметрmentioning

confidence: 99%

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Two-Channel Ballistic Transformer Gravimeter

BEZVESILNA,

NECHAI,

TOLOCHKO

et al. 2024

Вісник Хмельницького національного університету. Серія: Технічн

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The two-channel ballistic transformer gravimeter for measuring the doubled value of the acceleration of gravity contains a gravimeter that uses a fixed glass tube made of a dielectric material, a magnetized test body in the form of a layer, a computer and an inductance winding, which is characterized by the fact that the fixed tube is made of a dielectric material, the inductance winding acts as a primary excitation winding connected to the power source, which additionally contains two identical sections of the secondary output winding, connected in series-opposite, to create two measurement channels, an electromagnet consisting of an armature made of magnetic material, an additional winding connected through a switch to an additional power source. To provide free vertical movement in two opposite directions along the OZ axis of the magnetized test body, it is proposed to use the proposed electromagnet consisting of an armature made of a soft magnetic material, an additional winding connected through a switch to an additional power source. The winding of the electromagnet is connected to the power source by a switch to create an electromagnetic flux of attraction to the test body, which, thanks to this, will rise to the uppermost position. At the next moment, the electromagnet switch is turned off, and the test body falls down under the action of the acceleration of gravity. The doubled output signal of the acceleration of gravity, which is removed from the secondary winding, is free from the effects of interference: external electromagnetic flows, inertial vertical acceleration, instrumental errors caused by changes in temperature, humidity, vibrations, pressure, the moment of dry friction forces, non-identity of the parameters of two identical sections of the secondary output winding and other factors - is submitted to the computer. The output of the computer is proportional to twice the acceleration of gravity value. Increased accuracy and reliability of measurements of the doubled value of the acceleration of gravity and increased efficiency of the search for minerals have been ensured

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Section: двоканальний балістичний трасформаторний гравіметрmentioning

confidence: 99%

Section: двоканальний балістичний трасформаторний гравіметрmentioning

confidence: 99%

Section: двоканальний балістичний трасформаторний гравіметрmentioning

confidence: 99%

See 1 more Smart Citation

Two-Channel Ballistic Transformer Gravimeter

BEZVESILNA,

NECHAI,

TOLOCHKO

et al. 2024

Вісник Хмельницького національного університету. Серія: Технічн

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“…For aviation gravimetric measurements, an aviation gravimetric system (AGS) is used, the sensitive element of which is a gravimeter. Different types of gravimeters were used [1][2][3][4][5][6][7], which have their own advantages and disadvantages. Works [1][2][3][4][5][6][7] provide a description of AGS and the principle of its operation.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

“…Different types of gravimeters were used [1][2][3][4][5][6][7], which have their own advantages and disadvantages. Works [1][2][3][4][5][6][7] provide a description of AGS and the principle of its operation.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

Analysis of Methodological Errors of the Aviation Gravimetric System With a Transformaton Gravimeter

BEZVESILNA,

NECHAI,

TOLOCHKO

2023

KhmNU.TS

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The equations of motion and a list of the main components of the AGS are given: gravimeter, stabilization system, system for determining navigation parameters, height meter, on-board digital computer. An analysis of methodological errors of the aviation gravimetric system with a transformer gravimeter was carried out, from which the accuracy requirements for the AGS components were formulated, provided that the accuracy of PST measurements is 1–2 mGal Analytical expressions were found and the coefficients of sensitivity of the total error of the AGS output signal to the measurement errors of the following aircraft movement parameters were calculated: speed, course, latitude, altitude, vertical speed, vertical acceleration, path for different flight modes. Therefore, the study of the sensitivity of the AGS to errors in the measurement of speed, latitude and course, depending on a number of parameters of the aircraft movement, showed that in the case of aviation gravimetric measurements along the Earth’s meridian, it is necessary to accurately determine the course, along the Earth’s parallel – to accurately measure the speed, in mid-latitudes – latitude . It is substantiated that the use of a new two-channel transformer gravimeter provides the necessary increase in the accuracy of AGS. Changes in the sensitivity of the error of the AGS output signal to speed measurement errors were studied depending on the latitude of the site at constant values of the course, as well as on the course of the aircraft at constant values of the latitude. It is shown that the sensitivity of the AGS to speed measurement errors is maximum for the east and west courses (22.6 mGl/m/s and – 6.5 mGl/m/s, respectively) at the location latitude j= 00; minimum for north and south courses and at j=900 regardless of the course (8.05 mGl/m/s). Permissible values of errors in determining the flight parameters of the aircraft were calculated: speed 0.05…0.15 m/s, heading 1.43…3 arcmin, latitude 0.5…1.5 arcmin. min., height 3.3…10 m, vertical speed (0.5…1).102 m/s, vertical acceleration (1…3).10-5 m/s2, path (1.5…4.5) m.

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Modeling of the Work of a New Dual-Channel Capacitive Mems Gravimeter of Aviation Gravimetric System

Khylchenko¹

2018

Èlektron. model.

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Ìîäåëþâàííÿ ðîáîòè íîâîãî äâîêàíàëüíîãî ºìí³ñíîãî ì³êðîåëåêòðîìåõàí³÷íîãî ãðàâ³ìåòðà àâ³àö³éíî¿ ãðàâ³ìåòðè÷íî¿ ñèñòåìèÄàíî àíàë³ç ñó÷àñíèõ ãðàâ³ìåòð³â, ÿê³ çàñòîñîâóþòüñÿ ïðè ïðîâåäåíí³ àâ³àö³éíèõ ãðàâ³ìåò-ðè÷íèõ ðîá³ò òà íàéïåðñïåêòèâí³øèõ íàóêîâèõ ðîçðîáîê. Çàïðîïîíîâàíî íîâèé äâîêàíàëü-íèé ºìí³ñíèé ãðàâ³ìåòð (ÄªÃ) ç âèêîðèñòàííÿì ì³êðîåëåêòðîìåõàí³÷íî¿ ñèñòåìè (ÌÅÌÑ) àâòîìàòèçîâàíî¿ àâ³àö³éíî¿ ãðàâ³ìåòðè÷íî¿ ñèñòåìè (ÀÃÑ). Îá´ðóíòîâàíî àêòóàëüí³ñòü äî-ñë³äaeåíü, ìîaeëèâ³ñòü òà äîö³ëüí³ñòü âèêîðèñòàííÿ ÄªÃ ó ÿêîñò³ ãðàâ³ìåòðà ÀÃÑ. Ïðî-âåäåíî àíàë³ç ë³òåðàòóðíèõ äaeåðåë ó ãàëóçÿõ ñó÷àñíî¿ àâ³àö³éíî¿ ãðàâ³ìåòð³¿ òà ÌÅÌÑ òåõíîëîã³é ó ïðèëàäîáóäóâàíí³. Îïèñàíî êîíñòðóêö³þ òà ïðèíöèï ðîáîòè çàïðîïîíîâàíîãî ÌÅÌÑ ÄªÃ, ðîçðîáëåíî ñòðóêòóðíó ñõåìó. Ïîòî÷íåíî çíà÷åííÿ êîåô³ö³ºíòà ïðóaeíîñò³ ï³äâ³ñó ñêëàäíî¿ ôîðìè. Ðîçãëÿíóòî ìîaeëèâ³ñòü òà äîö³ëüí³ñòü âèêîðèñòàííÿ íåéðîìåðåaeå-âîãî ï³äõîäó â çàäà÷àõ ðîçðîáêè àëãîðèòì³â ôóíêö³îíóâàííÿ ÀÃÑ ³ç íîâèì ÄªÃ. Ê ë þ ÷ î â ³ ñ ë î â à: ïðèñêîðåííÿ ñèëè òÿae³ííÿ, àâ³àö³éíà ãðàâ³ìåòðè÷íà ñèñòåìà, ºìí³ñ-íèé ãðàâ³ìåòð.Ñó÷àñí³ ãðàâ³ìåòðè àâ³àö³éíî¿ ãðàâ³ìåòðè÷íî¿ ñèñòåìè (ÀÃÑ). Äëÿ âè-çíà÷åííÿ õàðàêòåðèñòèê ãðàâ³òàö³éíîãî ïîëÿ Çåìë³ âèêîðèñòîâóþòüñÿ ÀÃÑ.¯õ ÷óòëèâèì åëåìåíòîì º ãðàâ³ìåòð, â³ä òî÷íîñò³ ÿêîãî, çàëåaeèòü òî÷-í³ñòü ÀÃÑ. Àâ³àö³éíà ãðàâ³ìåòðè÷íà ñèñòåìà äîçâîëÿº çäîáóòè ãðàâ³ìåò-ðè÷íó ³íôîðìàö³þ ó âàaeêîäîñòóïíèõ ðàéîíàõ çåìíî¿ êóë³ (ã³ðñüê³ ìàñèâè, àêâàòîð³¿ îêåàí³â, ìîð³â, çîíè åêâàòîðó òà ïîëþñ³â Çåìë³) øâèäøå òà ç ìåíøèìè âèòðàòàìè, í³ae çà äîïîìîãîþ íàçåìíèõ ìîðñüêèõ àáî ñóõî-ïóòíèõ ãðàâ³ìåòðè÷íèõ çàñîá³â. Äàí³ ïðî ïðèñêîðåííÿ ñèëè òÿae³ííÿ (g), àáî ãðàâ³òàö³éíó àíîìàë³þ (Dg), ââåäåí³ ó ïàì'ÿòü áîðòîâîãî êîìï'þòåðà (ÁÊ) ÀÃÑ, ñóòòºâî âïëèâàòèìóòü [1] íà ï³äâèùåííÿ òî÷íîñò³ âèçíà÷åííÿ íàâ³ãàö³éíèõ ïàðàìåòð³â òà åôåêòèâíîñò³ ãðàâ³ìåòðè÷íî¿ ðîçâ³äêè.Ãðàâ³ìåòð º áàãàòîïðîô³ëüíèì ïðèëàäîì äëÿ âèì³ðþâàííÿ ïàðàìåòð³â g àáî Dg, çàñòîñóâàííÿ ÿêîãî ìîaeëèâî â áàãàòüîõ îáëàñòÿõ. Îäíàê íà ïðàêòèö³ ìàéaeå 100 % ãðàâ³ìåòð³â âèêîðèñòîâóºòüñÿ ó ãðàâ³ðîçâ³äóâàëü-

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Analysis of modern gravimeters of the aviation gravimetric system

Cited by 3 publications

References 13 publications

Two-Channel Ballistic Transformer Gravimeter

Two-Channel Ballistic Transformer Gravimeter

Analysis of Methodological Errors of the Aviation Gravimetric System With a Transformaton Gravimeter

Modeling of the Work of a New Dual-Channel Capacitive Mems Gravimeter of Aviation Gravimetric System

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