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Related Experiment Video

Updated: Feb 14, 2026

Conditions Affecting Social Space in Drosophila melanogaster

Conditions Affecting Social Space in Drosophila melanogaster

Published on: November 5, 2015

Research on Star Sensor Imaging Simulation Under Near-Space Hypersonic Non-Equilibrium Flow Conditions.

Zhen Liao¹, Hongyuan Wang¹, Xi Cheng¹

¹Research Center of Space Optical Engineering, Harbin Institute of Technology, Harbin 150001, China.

Sensors (Basel, Switzerland)

|February 13, 2026

Summary

This summary is machine-generated.

This study developed a simulation model for star sensor imaging under hypersonic conditions. The model reveals that solid media radiation significantly degrades star sensor images, impacting performance on near-space platforms.

Keywords:

aero-optical effects hypersonic flow imaging simulation star sensors

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Area of Science:

Aerospace Engineering
Optical Engineering
Astrodynamics

Background:

Star sensors are crucial for navigation in space.
Hypersonic flight conditions introduce significant challenges to imaging systems.
Degraded star sensor images hinder accurate attitude determination.

Purpose of the Study:

To develop a simulation model for star sensor imaging under hypersonic conditions.
To analyze the impact of thermochemical non-equilibrium flow on star sensor performance.
To provide theoretical support for star sensor design on hypersonic platforms.

Main Methods:

Utilized a two-temperature model for hypersonic non-equilibrium flow.
Simulated chemical reactions using Arrhenius law.
Quantitatively analyzed optical transmission and thermal radiation effects.
Simulated degraded star images under typical working conditions.

Main Results:

Thermochemical non-equilibrium flow significantly degrades star sensor images.
Radiation from solid media was identified as the primary degradation factor.
Detectable limit magnitudes were determined to be 3.28 and 4.55 under tested conditions.

Conclusions:

The developed model effectively simulates star sensor degradation under hypersonic conditions.
Solid media radiation is a critical factor affecting star sensor imaging.
Results offer vital support for designing and testing star sensors for near-space hypersonic applications.