Incident light collimated angle's influence and compensation for analog sun sensor
To address the challenge of analog sun sensors measurement accuracy in meeting the requirements for high-precision attitude measurement,a method for compensating the collimated angle effects is proposed.Based on the analysis of the main sources of measurement errors in analog sun sensors,a measurement error model considering the characteristics of incident light collimated angle is constructed.The relationship between collimated angle errors and the direction of incident light is summarized.Starting from the measurement principle,an error compensation algorithm is derived to accurately compensate for the errors introduced by collimated angle characteristics.The simulation results demonstrate that the compensation algorithm exhibits good adaptability to the main errors.Within the field of the view of sun sensor,the average measurement precision accuracy is improved from 0.059 9° before compensation to 0.009 4° after compensation,significantly enhancing the measurement precision of the analog sun sensor.
analog sun sensorcollimated angleprecision compensationattitude measurement
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