Aviation gravimetric system with a two-channel transformer gravimeter for measuring anomalies of acceleration of gravity, which contains a transformer gravimeter (1), which is made with two channels, each of which has one transformer element TYe1 (5) and TYe2 (6), which are identical, the sensitivity axes of which are directed in opposite directions, each of which consists of a magnetic circuit (7), movable anchor. (10), primary excitation winding (8) and secondary output winding (9), which has two identical sections, two sections of secondary winding are connected in series-opposite, and movable armature. (10) is connected to the motor (11), which with a certain period lowers the anchor down and raises up along the magnetic circuit (7), and the motor is controlled by a switch. (12), which is connected to the control voltage source (13), and the output signal from the secondary output winding (9) is supplied to the input of the adder. (14), where an output signal proportional to twice the gravitational acceleration value is generated. Output of adder (14) is connected to input of amplifier (15) with additional protective ring. (16), and output of amplifier (15) is connected through digital module (17) to input of onboard computer. (4), wherein the adder (14), amplifier (15), digital module (17) and on-board computer (4) are successively connected in series by means of shielded coaxial cables. (18), wherein outputs from the system for determining current values of navigation parameters. (2) both the current altitude meter (3) and the reference value of gravity acceleration γ 0 are supplied to the input of the on-board computer (4), where the output signal of the gravitational anomaly Δ g is calculated by the formula:
Δg=fz+E+A-γ0,
where fz – output signal of two-channel transformer gravimeter (1); E – Eötvös amendment; A – correction for height; γ 0 – reference value of acceleration of gravity.
The utility model belongs to the field of measuring equipment and can be used for gravimetric measurements on aircraft in geodesy, geology, inertial navigation systems.
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