Abstract

In this paper, a double star sensor bracket design with complex space angle is proposed in order to improve the precision of microsatellites attitude measurement. This bracket is lightweight and is easy to manufacture. Finite element simulation and mechanical experiments are carried out. It is shown that the bracket satisfies the strength and stiffness requirements of microsatellites.

Highlights

  • Star sensor is a high-precision measurement device for satellite attitude, and it plays an important role in satellite attitude measurement and control system[1,2,3,4]

  • Star sensor has the advantages of high measurement accuracy, driftless system, etc. It is widely used in satellite attitude measurement systems[5,6]

  • The main used star sensor bracket of satellites is generally designed as a single independent bracket or a simple space angle double-star sensor bracket

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Summary

Introduction

Star sensor is a high-precision measurement device for satellite attitude, and it plays an important role in satellite attitude measurement and control system[1,2,3,4]. Star sensor has the advantages of high measurement accuracy, driftless system, etc It is widely used in satellite attitude measurement systems[5,6]. To ensure the practicality of the compact layout remote sensing microsatellite’s star sensor and improve the measurement precision of microsatellite attitude, in this paper, a novel two-frame design is proposed to achieve better efficiency and accuracy. This design can ensure that the two star sensors are in similar thermal and mechanical conditions in space, through the results measured by the two star sensors, the measurement precision of satellite attitude might be improved by mutual calibration and mutual correction. Experiments are carried out in order to validate the effectiveness of our design

Design parameters
Structural design
Mechanical simulation
Normal mode analysis
Static analysis
Frequency response analysis
Experimental verification
Conclusion
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