Satellite magnetic test external interference magnetic field closed-loop control method under geomagnetic environment

Abstract

The invention discloses a satellite magnetic test external interference magnetic field closed-loop control method under the geomagnetic environment. An external interference magnetic field value affecting satellite magnetic test accuracy is controlled under 3 nT, and under the condition that large zero-magnetism test equipment is not established, effective closed-loop control, automatic tracking, compensation and correction are conducted on a satellite magnetic test local area dynamic external interference magnetic field are achieved under the geomagnetic environment, and the 24-hour satellite quasi-zero-magnetism environment test condition under the geomagnetic environment is acquired, wherein automatic compensation is conducted on random interference values of geomagnetic field fluctuation and an industrial magnetic field.

Description

technical field [0001] The invention relates to the technical field of satellite measurement, in particular to a closed-loop control method for external interference magnetic field of satellite magnetic measurement in a geomagnetic environment. Background technique [0002] There are many factors in the geomagnetic field that affect the accuracy of satellite magnetic experiments. If the errors caused by magnetic measuring instruments, control equipment, and testing methods are not considered, and only from the perspective of changes in the magnetic environment, the external interference magnetic field affecting satellite magnetic measurement mainly includes the geomagnetic field. Fluctuations and ambient magnetic field disturbances. The increase of the background noise of the geomagnetic field will drown out part of the real signal of the measured satellite magnetic field, especially when measuring some satellites with small magnetic moment. The environmental magnetic field...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that, when the satellite magnetic moment is tested under the geomagnetic environment, the external interference magnetic field affects the accuracy of the satellite magnetic test. Reasonable layout between the magnetic field sensor and the monitoring external interference magnetic field sensor, new data processing method and control software use, to solve the synchronization, equivalence and consistency between the signal received by the external interference field source sensor and the satellite magnetic field sensor. and other key technologies; under the condition of not building large-scale zero-magnetic test equipment, realize the effective closed-loop control, automatic tracking, compensation and correction of the external interference magnetic field in the local dynamic magnetic environment of the satellite magnetic test; make the satellite magnetic test in the whole satellite during the daytime Avoid being affected by various external interference fields; obtain 24-hour "quasi-zero magnetic" environmental test conditions for satellites in a geomagnetic environment

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