Due to infrared sensor can effectively induce thermal radiation among the sky and ground

and it also has advantages such as small size

light weight and low cost

compared with traditional attitude measurement methods

design an attitude measurement system for UAV based on infrared sensing principle; the system works with new-fashioned ARM Cortex—M3 microprocessor STM32F103ZET6 as its processing unit

through collecting attitude information of infrared sensor

and attitude calculating

thus gain attitude angle of UAV; and effect of interference of the sun on experiment is also analyzed. The experimental tests verify that the attitude measurement system is simple

practical

works stably and precisely

and able to meet the requirements of general UAV attitude measurement.