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A High-Precision Vibration Measurement Method Using Magnetic Fields to Transfer Satellite In-orbit Vibration Information

A high-precision, satellite-based technology, applied in the field of aerospace satellite remote sensing platform, can solve problems such as the inability to meet the measurement accuracy requirements of high-resolution cameras, achieve high-precision real-time measurement, meet the measurement accuracy requirements, and realize the effect of real-time measurement

Active Publication Date: 2022-03-29
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Problems solved by technology

Although the above methods have their own advantages, none of them can meet the measurement accuracy requirements of high-resolution cameras, especially high-precision real-time measurement

Method used

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  • A High-Precision Vibration Measurement Method Using Magnetic Fields to Transfer Satellite In-orbit Vibration Information
  • A High-Precision Vibration Measurement Method Using Magnetic Fields to Transfer Satellite In-orbit Vibration Information
  • A High-Precision Vibration Measurement Method Using Magnetic Fields to Transfer Satellite In-orbit Vibration Information

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Embodiment Construction

[0021] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0023] As mentioned in the background technology, currently used such as accelerometers, piezoelectric sensors, micro-mechanical gyroscopes, optical vibration measurement technology, laser interferometers, etc., the measurement accuracy of the accelerometer is within 10 -5 ~10 -6 gal, the angular...

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Abstract

This application discloses a high-precision vibration measurement method that uses a magnetic field to transmit satellite in-orbit vibration information. When the vibration source vibrates, the micro-magnetic intensity measuring device will vibrate together with the vibration source. Since the frequency of the vibration signal to be measured is much smaller than The speed of the magnetic field propagation, so it can be considered that the magnetic field change signal generated by the vibration acts on the micro-magnetism measuring device instantaneously, so the magnetic field signal detected by the micro-magnetism measuring device contains the information of the vibration signal, and the magnetic field can be used to transmit the micro-vibration information. Combined with the resolution of the magnetometer probe and high-precision vibration test data, the resolution of the vibration information transmitted by the magnetic field can reach 10 through theoretical calculations. ‑3 The arc second meets the measurement accuracy requirements of high-resolution cameras and can achieve high-precision real-time measurement.

Description

technical field [0001] The invention generally relates to an aerospace satellite remote sensing platform, in particular to a high-precision vibration measurement method for transmitting vibration information of a satellite in orbit by using a magnetic field. Background technique [0002] The optical system of high-resolution remote sensing imaging satellites is extremely sensitive to environmental vibrations. The micro-vibrations on the satellite platform, especially the relative micro-vibrations between the mirror and the focal plane of the imaging system, are the main factors that generate image motion errors, which seriously affect the remote sensing satellites. image quality. Relative vibration is everywhere. On the premise of ensuring that the attitude of the satellite platform meets the design accuracy requirements, the relative vibration between the components that affect the imaging on the satellite should be measured. By measuring the vibration angular displacement ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H11/02
CPCG01H11/02
Inventor 葛丽丽李昊任琼英赵华李涛郑慧奇彭忠彭毓川唐振宇刘庆海王俊峰丁亮
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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