Session
Session VIII: Advanced Technologies—Section 2
Abstract
A typical horizon sensor has an average RMS accuracy of 0.2° for satellite attitude determination, with a mass of between 1 to 4kg and consumes 3 to 10W total power, while the ATSBTM CMOS horizon sensor has an RMS accuracy of better than 0.1°, a mass of 560g and consumes only 550mW when imaging. The CMOS horizon sensor which has a total Field of View (FOV) of approximately 90° can process the image data, calculate and transmit the nadir vector to the Attitude Determination and Control Subsystem (ADCS) On Board Computer (OBC) via a dual redundant CAN communication bus. Apart from attitude sensing, the CMOS horizon sensor has the capability of taking panchromatic images of up to 1M pixels in size. In this paper, the design, calibration, performance and test results of the horizon sensor will be discussed.
Presentation Slides
Modular CMOS Horizon Sensor for Small Satellite Attitude Determination and Control Subsystem
A typical horizon sensor has an average RMS accuracy of 0.2° for satellite attitude determination, with a mass of between 1 to 4kg and consumes 3 to 10W total power, while the ATSBTM CMOS horizon sensor has an RMS accuracy of better than 0.1°, a mass of 560g and consumes only 550mW when imaging. The CMOS horizon sensor which has a total Field of View (FOV) of approximately 90° can process the image data, calculate and transmit the nadir vector to the Attitude Determination and Control Subsystem (ADCS) On Board Computer (OBC) via a dual redundant CAN communication bus. Apart from attitude sensing, the CMOS horizon sensor has the capability of taking panchromatic images of up to 1M pixels in size. In this paper, the design, calibration, performance and test results of the horizon sensor will be discussed.
