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Optical Parameters Optimization for All-Time Star Sensor.

Wenjie Wang1, Xinguo Wei2, Jian Li1

  • 1Key Laboratory of Precision Opto-Mechatronics Technology, Ministry of Education, School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100191, China.

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|July 7, 2019
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Summary
This summary is machine-generated.

All-Time star sensors use shortwave infrared (SWIR) imaging to overcome daytime atmospheric radiation, enabling operation within the atmosphere. Optimizing optical parameters like the detection band improves star sensor performance in challenging high-altitude conditions.

Keywords:
All-Time star sensordetection model simulationoptimal detection wavelength bandshort-wave infrared

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Area of Science:

  • Aerospace Engineering
  • Optical Engineering
  • Astrophysics Instrumentation

Background:

  • Traditional visible-light star sensors are limited by intense daytime atmospheric background radiation.
  • All-Time star sensor technology utilizes shortwave infrared (SWIR) imaging for enhanced atmospheric operation.
  • Effective star detection is crucial for navigation and attitude determination in various flight platforms.

Purpose of the Study:

  • To analyze and optimize optical parameters for All-Time star sensors operating in high-altitude environments.
  • To investigate the impact of field of view (FOV) and detection wavelength band on sensor performance.
  • To validate the effectiveness of SWIR detection band optimization under harsh conditions.

Main Methods:

  • Model simulation was employed to analyze optical parameter optimization under diverse high-altitude conditions.
  • Specific focus was placed on optimizing the detection band within the SWIR spectrum.
  • Ground-based experiments were conducted to validate the SWIR star sensor detection model and band selection.

Main Results:

  • The study demonstrated that optimizing optical parameters, particularly the SWIR detection band, significantly enhances All-Time star sensor performance.
  • Model simulations provided insights into parameter optimization for high-altitude scenarios.
  • Ground experiments confirmed the accuracy of the SWIR detection model and the effectiveness of the chosen detection band.

Conclusions:

  • Optimized optical parameters, especially the SWIR detection band, are critical for improving All-Time star sensor performance in high-altitude, harsh environments.
  • The validated SWIR star sensor detection model and optimization strategies offer a valuable reference for future aerospace applications.
  • This research facilitates the expansion of star sensor applications to atmospheric flight platforms.