CubeSat Digital Sun Sensor "DSS1"

CubeSat Attitude Control Systems
CubeSat Digital Sun Sensor DSS

Digital Sun Sensor “DSS1”

Basic Price € 2000

NanoAvionics high precision digital sun sensor is used to determine the angle of the incident sun rays. The sensor is designed for use in attitude control and determination systems of small satellites for accurate measurement of the azimuth and elevation angles of the sun vector.

The device measures the incident sun spot onto the surface of position sensitive photo-diode detector (PSD) and then calculates sun vector direction based on the geometrical dimensions of the instrument. The sensor cap with pinhole is used to limit the incident light to a smaller beam to increase precision.

Differential measurement circuit ensures that temperature transients in the device do not affect measurement accuracy.

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Features

  • Communication: SPI, UART
  • Debug: SWD
  • Outputs:
    • 4 raw ADC measurements of PSD sensor
    • X-Y coordinates of sun spot position onto PSD sensor
    • Angles of sun vector azimuth and elevation with respect to sensor body reference frame
    • Sun vector Quaternion with respect to sensor body reference frame
  • Configurable sensor zero offset parameters
  • PCB: Gold plated FR-4 (IPC-6012B)
  • IPC – A600H class 3 assembly, soldering per ESA specification ECSS-Q-70-08
  • Dimensions: 60 x 27 x 12 mm
  • Mass: 15 g

Performance

  • ARM-Cortex M0 up to 48 MHz
  • 8 Kb RAM
  • 64 Kb Flash
  • 2D PSD sensor
  • Field of View: ± 30 °
  • Accuracy: ± 0.5 °
  • Power supply: 5 V
  • Average current consumption: 10 mA
  • Operating temperature: -20 ºC to +60 ºC

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