Abstract: Aiming at the defect that avionics equipment vehicle-mounted tests lack independent altitude measurement data and cannot fully simulate the airborne environment, this paper uses the SCP1000-D01 sensor chip of the Finnish VTI company to complete the design of a barometric altimeter based on the USB interface. Through the low-altitude data collection and analysis of the barometric altimeter, it is concluded that the barometric altimeter has good stability in a shorter measurement time and more accurate altitude difference. This is consistent with the conclusion of the barometric altitude measurement data analysis of high-altitude flight data, indicating that the portable barometric altimeter can make up for the defect of the existing vehicle-mounted test lacking independent altitude measurement, and has the advantages of low cost, convenience and flexibility.
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