DQS3: Precision Sun Sensor Testing

DQS3 – Advanced Dual Quadrant Sun Sensor Simulator for Precision Testing

As satellite missions continue to demand higher levels of accuracy and reliability, the validation and calibration of onboard optical sensors become increasingly critical. The DQS3 (Dual Quadrant Sun Sensor Simulator) from SOLAR MEMS has been developed to provide a robust and highly stable Optical Ground Support Equipment (OGSE) solution for testing sun sensors in production, integration, and laboratory environments.

Designed for Reliable Sun Sensor Validation

The DQS3 is specifically engineered to verify the correct operation of sun sensors by simulating realistic optical conditions with exceptional stability and repeatability. The system enables comprehensive testing procedures while providing flexible operational modes and continuous monitoring of critical parameters.

Whether used during sensor manufacturing, satellite integration, or mission preparation, the DQS3 offers a reliable platform for validating optical sensor performance before launch.

Flexible Standalone and Remote Operation

The DQS3 can operate as a standalone unit or through remote-control configurations, allowing seamless integration into automated testing environments and cleanroom facilities. Its architecture supports flexible operation modes while ensuring full monitoring of all system parameters in real time.

This flexibility makes the system suitable for a wide range of aerospace and laboratory applications where precision optical testing is essential.

Key Features of the DQS3

The DQS3 has been designed to provide advanced testing capabilities while maintaining operational simplicity and reliability.

Main capabilities include:

  • Independent control of up to four optical heads
  • Simultaneous testing of up to four sun sensors
  • Local and remote operation modes
  • Closed-loop control for stable light output
  • Individual LED control for each optical head
  • Real-time monitoring of temperature, intensity, and power
  • Integrated thermal management system
  • Configurable Ethernet communication using CCSDS C&C protocol
  • USB debug and data access interface
  • Designed for cleanroom and laboratory environments

Compliance and Safety Standards

The DQS3 has been developed in accordance with internationally recognized electrical safety, electromagnetic compatibility, and photobiological safety standards, ensuring safe and reliable operation in laboratory and industrial environments.

Compliance highlights:

  • IEC 61010-1 compliant for electrical safety
  • IEC 61326-1 compliant for electromagnetic compatibility (EMC)
  • IEC/EN 62471 compliant for photobiological safety (Risk Group 2)
  • CE marking compliant
  • UL marking compliant
  • CSA marking compliant

These certifications and compliance standards reinforce the DQS3’s suitability for professional aerospace testing facilities and advanced integration laboratories.

High Stability Optical Simulation

The DQS3 optical architecture enables accurate and repeatable light projection for precise sun sensor characterization. Four independent LED optical heads can be oriented at ±30° relative to the sensor under test, covering multiple angular combinations in both X and Y axes.

This configuration allows engineers to perform detailed calibration and validation procedures under controlled and repeatable conditions.

Technical Specifications

The DQS3 has been developed for demanding aerospace testing environments with industrial-grade reliability and integrated thermal control.

Environmental and System Specifications

  • Input voltage: 100–240 VAC, 50/60 Hz
  • Power consumption: up to 360 W
  • Internal regulated power supply: 24 VDC
  • Operating temperature (cabinet): 0 to 40 °C
  • Optical head temperature: -40 to +95 °C (No vacuum)
  • Optical head temperature: -40 to +90 ºC (Vacuum)
  • Storage temperature: -20 to +70 °C
  • Humidity: up to 80% non-condensing
  • Cleanroom compatibility: ISO 8
  • Rack-based 19” architecture with integrated electronics

Mechanical Specifications

  • Approximate dimensions: 930 × 630 × 560 mm
  • Weight: approximately 60 kg
  • Optical head mounting: Three-point mounting system, M4 screws

Supporting the Next Generation of Space Systems

With its modular design, advanced control architecture, and precise optical simulation capabilities, the DQS3 provides satellite manufacturers and integrators with a dependable platform for validating sun sensor performance throughout the development lifecycle.

At SOLAR MEMS, we continue developing innovative optical solutions and testing systems that support the growing demands of modern space missions and advanced Guidance, Navigation, and Control (GNC) applications.