Modeling and research of a space-based spacecraft infrared detection system

Area of Science:

• Spacecraft engineering
• Infrared detection systems
• Thermal management

Background:

• Assessing spacecraft operational status in orbit is difficult.
• Payloads generate waste heat, typically dissipated by radiators.
• Radiator thermal signatures can indicate internal working conditions.

Purpose of the Study:

• To analyze a space-based infrared detection system model incorporating radiator thermal analysis.
• To investigate the feasibility of using radiator infrared signatures for spacecraft health monitoring.

Main Methods:

• Developed a detailed model of a space-based infrared detection system.
• Included radiator thermal characteristics in the model, a novel approach.
• Calculated infrared radiation and reflection properties in the 8-12 μm spectrum.

Main Results:

• Spacecraft self-radiation dominates over reflected infrared radiation in the 8-12 μm range.
• The contrast ratio between the radiator and surrounding areas is a viable criterion for assessing spacecraft working condition.
• Higher radiator temperatures extend the detection distance.

Conclusions:

• Infrared detection of spacecraft radiators provides a non-invasive method for health monitoring.
• The radiator's thermal contrast is a key indicator of spacecraft operational status.
• This approach enhances the capability for remote spacecraft condition assessment.