Earth Sensor Based on Thermopile Detectors for Satellite Attitude Determination

摘要

This paper presents mathematical modeling and the physical implementation of an Earth sensor based on thermopile detectors, which has been developed for the Microsat mission. The model includes a behavior model of the sensor and the radiant balance between the sensor and the Earth. The implemented instrument employs a solid-state technology, simplifies the pointing method and signal processing stage, and uses a very compact electronic design. A sensor prototype has been designed and built for the accuracy and irradiation tests. The evaluation of the device has been performed through the use of a testbench that allows sensor performance parameters to be determined. The sensor has achieved the functional mission requirements.